IntegratePeakTimeSlices.cpp

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
/*
 * IntegratePeakTimeSlices.cpp
 *
 *  Created on: May 5, 2011
 *      Author: ruth
 *
 *
 *
 */
#include "MantidCrystal/IntegratePeakTimeSlices.h"
#include "MantidAPI/ConstraintFactory.h"
#include "MantidAPI/FuncMinimizerFactory.h"
#include "MantidAPI/FunctionDomain1D.h"
#include "MantidAPI/FunctionFactory.h"
#include "MantidAPI/IFuncMinimizer.h"
#include "MantidAPI/IFunction.h"
#include "MantidAPI/WorkspaceFactory.h"
#include "MantidDataObjects/Workspace2D.h"
 
#include "MantidHistogramData/BinEdges.h"
#include "MantidHistogramData/CountStandardDeviations.h"
#include "MantidHistogramData/Counts.h"
#include "MantidHistogramData/Points.h"
 
#include <boost/math/special_functions/round.hpp>
#include <utility>
 
using namespace Mantid::Kernel;
using namespace Mantid::API;
using namespace Mantid::DataObjects;
using namespace Mantid::Geometry;
using namespace Mantid::HistogramData;
using namespace std;
namespace Mantid::Crystal {
 
DECLARE_ALGORITHM(IntegratePeakTimeSlices)
 
// Attr, m_AttributeValues, and StatBase indicies
#define IStartRow 0
#define IStartCol 1
#define INRows 2
#define INCol 3
#define ISSIxx 4
#define ISSIyy 5
#define ISSIxy 6
#define ISSxx 7
#define ISSyy 8
#define ISSxy 9
#define ISSIx 10
#define ISSIy 11
#define ISSx 12
#define ISSy 13
#define IIntensities 14
#define ISS1 15
#define IVariance 16
#define ITotBoundary 17
#define INBoundary 18
#define IVarBoundary 19
#define NAttributes 20
 
// Parameter indicies
#define IBACK 0
#define ITINTENS 1
#define IXMEAN 2
#define IYMEAN 3
#define IVXX 4
#define IVYY 5
#define IVXY 6
// TODO: Edge Peaks-Return NoPeak(Intensity=0,variance=0) if any center on any
// slice is out of bounds
// TODO: Calc ratio for edge peaks, should use the slant of bivariate normal
// instead of assuming
//        distribution axes are lined up with the row and col vectors
#define NParameters 7
 
namespace {
//           # std sigs  0    .25     .5     .75    1     1.25   1.5    2 2.5
const double probs[9] = {.5f, .5987f, .6915f, .7734f, .8413f, .8944f, .9322f, .9599f, .9772f};
 
const int MinRowColSpan = 6;
const int MaxRowColSpan = 36;
const int MinTimeSpan = 3;
const double NeighborhoodRadiusDivPeakRadius = 1.5;
const double MaxNeighborhoodRadius = 10;
const double NStdDevPeakSpan = 2;
const double MaxGoodRatioFitvsExpIntenisites = 2.5;
const double MinGoodRatioFitvsExpIntenisites = .25;
const double MinGoodIoverSigI = 3.0;
const double MinVariationInXYvalues = .6; // Peak spans one pixel only
const double MaxCorrCoeffinXY = .9;       // otherwise all data on one line
} // namespace
 
IntegratePeakTimeSlices::IntegratePeakTimeSlices()
    : Algorithm(), m_R0(-1), m_ROW(0.), m_COL(0.), m_cellWidth(0.), m_cellHeight(0.), m_NROWS(0), m_NCOLS(0) {
  this->deprecatedDate("2024-10-02");
  m_EdgePeak = false;
  m_NeighborIDs = new int[3];
  m_NeighborIDs[0] = 3;
  m_NeighborIDs[1] = 2;
  m_AttributeNames[0] = "StartRow";
  m_AttributeNames[1] = "StartCol";
  m_AttributeNames[2] = "NRows";
  m_AttributeNames[3] = "NCols";
  m_AttributeNames[4] = "SSIxx";
  m_AttributeNames[5] = "SSIyy";
  m_AttributeNames[6] = "SSIxy";
  m_AttributeNames[7] = "SSxx";
  m_AttributeNames[8] = "SSyy";
  m_AttributeNames[9] = "SSxy";
  m_AttributeNames[10] = "SSIx";
  m_AttributeNames[11] = "SSIy";
  m_AttributeNames[12] = "SSx";
  m_AttributeNames[13] = "SSy";
  m_AttributeNames[14] = "Intensities";
  m_AttributeNames[15] = " SS1";
  m_AttributeNames[16] = "Variance";
  m_AttributeNames[17] = "TotBoundary";
  m_AttributeNames[18] = "NBoundary";
  m_AttributeNames[19] = "VarianceBoundary";
 
  m_ParameterNames[0] = "Background";
  m_ParameterNames[1] = "Intensity";
  m_ParameterNames[2] = "Mcol";
  m_ParameterNames[3] = "Mrow";
  m_ParameterNames[4] = "SScol";
  m_ParameterNames[5] = "SSrow";
  m_ParameterNames[6] = "SSrc";
 
  std::fill(m_ParameterValues.begin(), m_ParameterValues.end(), 0.0);
}
 
double SQRT(double v) {
  if (v < 0)
    return -1;
  return sqrt(v);
}
IntegratePeakTimeSlices::~IntegratePeakTimeSlices() { delete[] m_NeighborIDs; }
 
void IntegratePeakTimeSlices::init() {
  declareProperty(std::make_unique<WorkspaceProperty<MatrixWorkspace>>("InputWorkspace", "", Direction::Input),
                  "A 2D workspace with X values of time of flight");
 
  declareProperty(std::make_unique<WorkspaceProperty<TableWorkspace>>("OutputWorkspace", "", Direction::Output),
                  "Name of the output table workspace with Log info");
 
  declareProperty(std::make_unique<WorkspaceProperty<PeaksWorkspace>>("Peaks", "", Direction::Input),
                  "Workspace of Peaks");
 
  declareProperty("PeakIndex", 0, "Index of peak in PeaksWorkspace to integrate");
 
  declareProperty("PeakQspan", .06, "Max magnitude of Q of Peak to Q of Peak Center, where mod(Q)=1/d");
 
  declareProperty("CalculateVariances", true, "Calc (co)variances given parameter values versus fit (co)Variances ");
 
  declareProperty("Ties", "", "Tie parameters(Background,Intensity, Mrow,...) to values/formulas.");
 
  declareProperty("NBadEdgePixels", 0, "Number of  bad Edge Pixels");
 
  declareProperty("Intensity", 0.0, "Peak Integrated Intensity", Direction::Output);
 
  declareProperty("SigmaIntensity", 0.0, "Peak Integrated Intensity Error", Direction::Output);
}
 
void IntegratePeakTimeSlices::exec() {
  time_t seconds1;
 
  seconds1 = time(nullptr);
 
  double dQ = getProperty("PeakQspan");
 
  g_log.debug("------------------Start Peak Integrate-------------------");
 
  if (dQ <= 0) {
    g_log.error("Negative PeakQspans are not allowed. Use .17/G where G is the "
                "max unit cell length");
    throw std::runtime_error("Negative PeakQspans are not allowed in IntegratePeakTimeSlices");
  }
 
  MatrixWorkspace_const_sptr inpWkSpace = getProperty("InputWorkspace");
  if (!inpWkSpace) {
    g_log.error("Improper Input Workspace");
    throw std::runtime_error("Improper Input Workspace in IntegratePeakTimeSlices");
  }
 
  PeaksWorkspace_sptr peaksW;
  peaksW = getProperty("Peaks");
  if (!peaksW) {
    g_log.error("Improper Peaks Input");
    throw std::runtime_error("Improper Peaks Input");
  }
 
  int indx = getProperty("PeakIndex");
 
  Peak const &peak = peaksW->getPeak(indx);
 
  //------------------------------- Get Panel
  //--------------------------------------
  std::shared_ptr<const Geometry::IComponent> panel_const =
      peak.getInstrument()->getComponentByName(peak.getBankName());
 
  std::shared_ptr<Geometry::IComponent> panel = std::const_pointer_cast<Geometry::IComponent>(panel_const);
 
  if (!panel || !panel_const) {
    g_log.error("Cannot get panel for a peak");
    throw std::runtime_error("Cannot get panel for a peak");
  }
 
  BoundingBox box;
  panel->getBoundingBox(box);
 
  if (!box.isPointInside(peak.getDetPos())) {
    g_log.error("Detector pixel is NOT inside the Peaks Bank");
    throw std::runtime_error("Detector pixel is NOT inside the Peaks Bank");
  }
 
  FindPlane(m_center, m_xvec, m_yvec, m_ROW, m_COL, m_NROWS, m_NCOLS, m_cellWidth, m_cellHeight, peak);
 
  g_log.debug() << "   Peak Index " << indx << '\n';
 
  double TotVariance = 0;
  double TotIntensity = 0;
  double lastRow = m_ROW;
  double Row0 = lastRow;
  double lastCol = m_COL;
  double Col0 = lastCol;
 
  // For quickly looking up workspace index from det id
  m_wi_to_detid_map = inpWkSpace->getDetectorIDToWorkspaceIndexMap();
 
  TableWorkspace_sptr TabWS = std::make_shared<TableWorkspace>(0);
 
  //----------------------------- get Peak extents
  //------------------------------
  try {
    string spec_idList;
    int detID = peak.getDetectorID();
 
    // Find the workspace index for this detector ID
    detid2index_map::const_iterator it = m_wi_to_detid_map.find(detID);
    size_t wsIndx = (it->second);
 
    double R = CalculatePositionSpan(peak, dQ) / 2;
 
    R = min<double>(MaxRowColSpan * max<double>(m_cellWidth, m_cellHeight), R);
    R = max<double>(MinRowColSpan * max<double>(m_cellWidth, m_cellHeight), R);
 
    R = 2 * R; // Gets a few more background cells.
    int Chan;
 
    const auto &X = inpWkSpace->x(wsIndx);
    int dChan = CalculateTimeChannelSpan(peak, dQ, X, int(wsIndx), Chan);
 
    dChan = max<int>(dChan, MinTimeSpan);
 
    double Centy = Row0;
    double Centx = Col0;
    IDetector_const_sptr CenterDet = peak.getDetector();
 
    double neighborRadius; // last radius for finding neighbors
 
    neighborRadius = min<double>(MaxNeighborhoodRadius, NeighborhoodRadiusDivPeakRadius * R);
    auto Nneighbors = static_cast<int>(neighborRadius * neighborRadius / m_cellWidth / m_cellHeight * 4);
 
    Nneighbors = min<int>(Nneighbors, static_cast<int>(inpWkSpace->getNumberHistograms()) - 2);
    delete[] m_NeighborIDs;
 
    m_NeighborIDs = new int[Nneighbors + 2];
    m_NeighborIDs[0] = Nneighbors + 2;
    m_NeighborIDs[1] = 2;
    Kernel::V3D Cent = (m_center + m_xvec * (Centx - m_COL) + m_yvec * (Centy - m_ROW));
 
    getNeighborPixIDs(panel, Cent, neighborRadius, m_NeighborIDs);
 
    if (m_NeighborIDs[1] < 10) {
      g_log.error("Not enough neighboring pixels to fit ");
      throw std::runtime_error("Not enough neighboring pixels to fit ");
    }
    int NBadEdgeCells = getProperty("NBadEdgePixels");
    int MaxChan = -1;
    double MaxCounts = -1;
 
    //     --------------- Find Time Chan with max counts----------------
    for (int dir = 1; dir > -2; dir -= 2) {
      bool done = false;
      for (int t = 0; t < dChan && !done; t++)
        if (dir < 0 && t == 0) {
          Centy = Row0;
          Centx = Col0;
        } else if (Chan + dir * t < 0 || Chan + dir * t >= static_cast<int>(X.size()))
          done = true;
        else {
 
          int NN = m_NeighborIDs[1];
          MatrixWorkspace_sptr Data = WorkspaceFactory::Instance().create(std::string("Workspace2D"), 3, NN, NN);
 
          auto XXX = std::make_shared<DataModeHandler>(R, R, Centy, Centx, m_cellWidth, m_cellHeight,
                                                       getProperty("CalculateVariances"), NBadEdgeCells,
                                                       m_NCOLS - NBadEdgeCells, NBadEdgeCells, m_NROWS - NBadEdgeCells);
          m_AttributeValues = XXX;
          XXX->setCurrentRadius(R);
 
          SetUpData1(Data, inpWkSpace, Chan + dir * t, Chan + dir * t, R, CenterDet->getPos(), spec_idList);
 
          if (m_AttributeValues->StatBaseVals(ISSIxx) > 0) {
            if (m_AttributeValues->StatBaseVals(IIntensities) > MaxCounts) {
              MaxCounts = m_AttributeValues->StatBaseVals(IIntensities);
              MaxChan = Chan + dir * t;
            }
            if (m_AttributeValues->StatBaseVals(IIntensities) > 0) {
              Centx = m_AttributeValues->StatBaseVals(ISSIx) / m_AttributeValues->StatBaseVals(IIntensities);
              Centy = m_AttributeValues->StatBaseVals(ISSIy) / m_AttributeValues->StatBaseVals(IIntensities);
            } else
              done = true;
          } else
            done = true;
 
          if (t >= 3 && (m_AttributeValues->StatBaseVals(IIntensities) < MaxCounts / 2.0) && MaxCounts >= 0)
            done = true;
        }
    }
    if (MaxChan > 0)
      Chan = MaxChan;
 
    g_log.debug() << "   largest Channel,Radius,m_cellWidth,m_cellHeight = " << Chan << " " << R << " " << m_cellWidth
                  << " " << m_cellHeight << '\n';
 
    if (R < MinRowColSpan / 2 * max<double>(m_cellWidth, m_cellHeight) || dChan < MinTimeSpan) {
      g_log.error("Not enough rows and cols or time channels ");
      throw std::runtime_error("Not enough rows and cols or time channels ");
    }
 
    InitializeColumnNamesInTableWorkspace(TabWS);
 
    //------------------------------------- Start the Integrating
    //-------------------------------
    double time;
    int ncells;
 
    Mantid::API::Progress prog(this, 0.0, 1.0, dChan);
 
    // Set from attributes replace by m_R0
    m_R0 = -1;
    int LastTableRow = -1;
    auto origAttributeList = std::make_shared<DataModeHandler>();
    auto lastAttributeList = std::make_shared<DataModeHandler>();
 
    for (int dir = 1; dir >= -1; dir -= 2) {
      bool done = false;
 
      for (int chan = 0; chan < dChan && !done; chan++)
        if (dir < 0 && chan == 0) {
          lastRow = Row0;
          lastCol = Col0;
          lastAttributeList = origAttributeList;
          if (TabWS->rowCount() > 0)
            LastTableRow = 0;
 
        } else if (Chan + dir * chan < 0 || Chan + dir * chan >= static_cast<int>(X.size()))
          done = true;
        else {
 
          int xchan = Chan + dir * chan;
 
          size_t topIndex = xchan + 1;
          if (topIndex >= X.size())
            topIndex = X.size() - 1;
 
          time = (X[xchan] + X[topIndex]) / 2.0;
 
          double Radius = R;
 
          if (m_R0 > 0)
            Radius = m_R0;
 
          MatrixWorkspace_sptr Data =
              WorkspaceFactory::Instance().create(std::string("Workspace2D"), 3, m_NeighborIDs[1], m_NeighborIDs[1]);
 
          g_log.debug() << " A:chan=" << xchan << "  time=" << time << "   Radius=" << Radius << "row= " << lastRow
                        << "  col=" << lastCol << '\n';
 
          SetUpData(Data, inpWkSpace, panel, xchan, xchan, lastCol, lastRow, Cent, neighborRadius, Radius, spec_idList);
 
          m_AttributeValues->setTime(time);
 
          // if( dir==1 && chan ==0)
          //    origAttributeList= m_AttributeValues;
 
          ncells = static_cast<int>(m_AttributeValues->StatBaseVals(ISS1));
 
          std::vector<double> params;
          std::vector<double> errs;
          std::vector<std::string> names;
 
          if (m_AttributeValues->StatBaseVals(ISSIxx) > 0 &&
              m_AttributeValues->IsEnoughData(m_ParameterValues.data(), g_log) && m_ParameterValues[ITINTENS] > 0) {
            double chisqOverDOF;
 
            Fit(Data, chisqOverDOF, done, names, params, errs, lastRow, lastCol, neighborRadius);
 
            if (!done) // Bivariate error happened
            {
 
              if (isGoodFit(params, errs, names, chisqOverDOF)) {
                LastTableRow = UpdateOutputWS(TabWS, dir, xchan, params, errs, names, chisqOverDOF,
                                              m_AttributeValues->time, spec_idList);
 
                double TotSliceIntensity = m_AttributeValues->StatBaseVals(IIntensities);
                double TotSliceVariance = m_AttributeValues->StatBaseVals(IVariance);
 
                updatePeakInformation(params, errs, names, TotVariance, TotIntensity, TotSliceIntensity,
                                      TotSliceVariance, chisqOverDOF, ncells);
 
                lastAttributeList = m_AttributeValues;
 
                if (dir == 1 && chan == 0)
                  origAttributeList = lastAttributeList;
              } else
 
                done = true;
            }
 
          } else //(!IsEnoughData() || ParameterValues[ITINTENS] <= 0
          {
            done = true;
          }
 
          if (done) // try to merge
          {
            done = false;
 
            int chanMin, chanMax;
            if ((dir == 1 && chan == 0) || lastAttributeList->CellHeight <= 0) {
              chanMin = xchan;
              chanMax = xchan + 1;
              if (dir < 0)
                chanMax++;
              auto XXX = std::make_shared<DataModeHandler>(*m_AttributeValues);
              m_AttributeValues = XXX;
              if (!X.empty())
                m_AttributeValues->setTime((X[chanMax] + X[chanMin]) / 2.0);
 
            } else // lastAttributeList exists
 
            {
              chanMin = std::min<int>(xchan, xchan - dir);
              chanMax = chanMin + 1;
              if (lastAttributeList->case4)
                chanMax++;
 
              auto XXX = std::make_shared<DataModeHandler>(*lastAttributeList);
              m_AttributeValues = XXX;
 
              m_AttributeValues->setTime((time + m_AttributeValues->time) / 2.0);
            }
 
            if (updateNeighbors(panel, m_AttributeValues->getCurrentCenter(), Cent,
                                m_AttributeValues->getCurrentRadius(), neighborRadius))
              Cent = m_AttributeValues->getCurrentCenter();
 
            Data =
                WorkspaceFactory::Instance().create(std::string("Workspace2D"), 3, m_NeighborIDs[1], m_NeighborIDs[1]);
 
            SetUpData1(Data, inpWkSpace, chanMin, chanMax, m_AttributeValues->getCurrentRadius(),
                       m_AttributeValues->getCurrentCenter(), spec_idList);
 
            double chisqOverDOF;
 
            g_log.debug("Try Merge 2 time slices");
            if (m_AttributeValues->StatBaseVals(ISSIxx) >= 0 &&
                m_AttributeValues->IsEnoughData(m_ParameterValues.data(), g_log))
 
              Fit(Data, chisqOverDOF, done, names, params, errs, lastRow, lastCol, neighborRadius);
            else
              chisqOverDOF = -1;
 
            if (!done && isGoodFit(params, errs, names, chisqOverDOF)) {
 
              if (LastTableRow >= 0 && LastTableRow < static_cast<int>(TabWS->rowCount()))
                TabWS->removeRow(LastTableRow);
              else
                LastTableRow = -1;
 
              LastTableRow = UpdateOutputWS(TabWS, dir, (chanMin + chanMax) / 2.0, params, errs, names, chisqOverDOF,
                                            m_AttributeValues->time, spec_idList);
 
              if (lastAttributeList->lastISAWVariance > 0 && lastAttributeList->CellHeight > 0) {
                TotIntensity -= lastAttributeList->lastISAWIntensity;
                TotVariance -= lastAttributeList->lastISAWVariance;
              }
 
              double TotSliceIntensity = m_AttributeValues->StatBaseVals(IIntensities);
 
              double TotSliceVariance = m_AttributeValues->StatBaseVals(IVariance);
 
              updatePeakInformation(params, errs, names, TotVariance, TotIntensity, TotSliceIntensity, TotSliceVariance,
                                    chisqOverDOF, static_cast<int>(m_AttributeValues->StatBaseVals(ISS1)));
 
              // lastAttributeList= m_AttributeValues;
 
              if (dir == 1 && (chan == 0 || chan == 1)) {
                m_AttributeValues->case4 = true;
                origAttributeList = m_AttributeValues;
              } else
                LastTableRow = -1;
 
            } else {
              auto XXX = std::make_shared<DataModeHandler>();
              lastAttributeList = XXX;
            }
            done = true;
          }
 
          // Get ready for the next round
          Data.reset();
 
          if (!done) {
 
            // Now set up the center for this peak
            int i = findNameInVector("Mrow", names);
            if (i < 0) {
              throw std::runtime_error("Inconsistency found in algorithm "
                                       "execution. The index for the parameter "
                                       "Mrow is negative.");
            }
 
            lastRow = boost::math::iround(params[i]);
            i = findNameInVector("Mcol", names);
            if (i >= 0)
              lastCol = boost::math::iround(params[i]);
            prog.report();
 
          } else if (dir > 0)
            prog.report(dChan / 2);
          else
            prog.report(dChan);
 
          params.clear();
          errs.clear();
          names.clear();
        }
    }
 
  } catch (std::exception &EE1) {
    std::cout << "Error in main reason=" << EE1.what() << '\n';
 
    throw std::runtime_error(" Error IntegratePeakTimeSlices:" + std::string(EE1.what()));
  } catch (std::string &mess) {
    throw std::runtime_error("Error IntegratePeakTimeSlices:" + mess);
 
  } catch (...) {
    throw std::runtime_error("Error IntegratePeakTimeSlices:");
  }
 
  try {
 
    setProperty("OutputWorkspace", TabWS);
 
    setProperty("Intensity", TotIntensity);
    setProperty("SigmaIntensity", SQRT(TotVariance));
    time_t seconds2;
 
    seconds2 = time(nullptr);
    double dif = difftime(seconds2, seconds1);
    g_log.debug() << "Finished Integr peak number " << indx << " in " << dif << " seconds\n";
 
  } catch (std::exception &ss) {
 
    std::cout << "Error occurred XX " << ss.what() << '\n';
    throw std::runtime_error(ss.what());
  }
}
 
bool IntegratePeakTimeSlices::getNeighborPixIDs(const std::shared_ptr<Geometry::IComponent> &comp,
                                                const Kernel::V3D &Center, double &Radius, int *&ArryofID) {
 
  int N = ArryofID[1];
  int MaxN = ArryofID[0];
 
  if (N >= MaxN)
    return false;
 
  Geometry::BoundingBox box;
  comp->getBoundingBox(box);
 
  double minx = Center.X() - Radius;
  double miny = Center.Y() - Radius;
  double minz = Center.Z() - Radius;
  double maxx = Center.X() + Radius;
  double maxy = Center.Y() + Radius;
  double maxz = Center.Z() + Radius;
 
  if (box.xMin() >= maxx)
    return true;
 
  if (box.xMax() <= minx)
    return true;
  ;
 
  if (box.yMin() >= maxy)
    return true;
 
  if (box.yMax() <= miny)
    return true;
 
  if (box.zMin() >= maxz)
    return true;
 
  if (box.zMax() <= minz)
    return true;
  ;
 
  auto det = std::dynamic_pointer_cast<Geometry::Detector>(comp);
 
  if (det) {
    V3D pos = det->getPos() - Center;
    if (pos.X() * pos.X() + pos.Y() * pos.Y() + pos.Z() * pos.Z() < Radius * Radius) {
      ArryofID[N] = det->getID();
      N++;
      ArryofID[1] = N;
    }
    return true;
  }
 
  auto Assembly = std::dynamic_pointer_cast<const Geometry::ICompAssembly>(comp);
 
  if (!Assembly)
    return true;
 
  bool b = true;
 
  for (int i = 0; i < Assembly->nelements() && b; i++)
    b = getNeighborPixIDs(Assembly->getChild(i), Center, Radius, ArryofID);
 
  return b;
}
 
bool IntegratePeakTimeSlices::updateNeighbors(const std::shared_ptr<Geometry::IComponent> &comp, const V3D &CentPos,
                                              const V3D &oldCenter, double NewRadius, double &neighborRadius) {
  double DD = (CentPos - oldCenter).norm();
  bool changed = false;
  if (DD + NewRadius > neighborRadius) {
    auto NN = int(NStdDevPeakSpan * NeighborhoodRadiusDivPeakRadius * NewRadius / m_cellWidth * NStdDevPeakSpan *
                  NeighborhoodRadiusDivPeakRadius * NewRadius / m_cellHeight);
    if (m_NeighborIDs[0] < NN) {
      delete[] m_NeighborIDs;
      m_NeighborIDs = new int[NN + 2];
      m_NeighborIDs[0] = NN + 2;
    }
    m_NeighborIDs[1] = 2;
    neighborRadius = NeighborhoodRadiusDivPeakRadius * NewRadius;
 
    getNeighborPixIDs(comp, CentPos, neighborRadius, m_NeighborIDs);
    changed = true;
 
  } else // big enough neighborhood so
    neighborRadius -= DD;
 
  return changed;
}
 
double IntegratePeakTimeSlices::CalculatePositionSpan(Peak const &peak, const double dQ) {
 
  try {
    double Q = 0, ScatAngle = 0, dScatAngle = 0, DetSpan = 0;
 
    Q = peak.getQLabFrame().norm();
    Geometry::Instrument_const_sptr instr = peak.getInstrument();
    const Geometry::IComponent_const_sptr sample = instr->getSample();
    V3D pos = peak.getDetPos() - sample->getPos();
 
    ScatAngle = acos(pos.Z() / pos.norm());
 
    dScatAngle = 2 * dQ / Q * tan(ScatAngle / 2);
 
    DetSpan = pos.norm() * dScatAngle; // s=r*theta
 
    DetSpan = fabs(DetSpan);
 
    // IDetector_sptr det = peak.getDetector();
 
    return DetSpan;
 
  } catch (std::exception &s) {
    std::cout << "err in getNRowsCols, reason=" << s.what() << '\n';
    return 0;
  }
}
 
int IntegratePeakTimeSlices::CalculateTimeChannelSpan(Geometry::IPeak const &peak, const double dQ, const HistogramX &X,
                                                      const int specNum, int &Centerchan) {
  UNUSED_ARG(specNum);
  double Q = peak.getQLabFrame().norm(); // getQ( peak)/2/M_PI;
 
  double time = peak.getTOF();
  double dtime = dQ / Q * time;
  int chanCenter = findTimeChannel(X, time);
 
  Centerchan = chanCenter;
  int chanLeft = findTimeChannel(X, time - dtime);
  int chanRight = findTimeChannel(X, time + dtime);
  int dchan = abs(chanCenter - chanLeft);
 
  if (abs(chanRight - chanCenter) > dchan)
    dchan = abs(chanRight - chanCenter);
 
  dchan = max<int>(3, dchan);
 
  return dchan + 5; // heuristic should be a lot more
}
 
void IntegratePeakTimeSlices::FindPlane(V3D &center, V3D &xvec, V3D &yvec, double &ROW, double &COL, int &NROWS,
                                        int &NCOLS, double &pixWidthx, double &pixHeighty,
                                        DataObjects::Peak const &peak) const {
 
  NROWS = NCOLS = -1;
  IDetector_const_sptr det = peak.getDetector();
  V3D detPos = det->getPos();
 
  center.setX(detPos.X());
  center.setY(detPos.Y());
  center.setZ(detPos.Z());
 
  std::shared_ptr<const Detector> dett = std::dynamic_pointer_cast<const Detector>(det);
 
  pixWidthx = dett->getWidth();
  pixHeighty = dett->getHeight();
 
  Kernel::Quat Qt = dett->getRotation();
  V3D yaxis0(0.0, 1.0, 0.0);
 
  Qt.rotate(yaxis0);
  yaxis0.normalize();
 
  V3D xaxis0(1, 0, 0);
  Qt.rotate(xaxis0);
  xaxis0.normalize();
 
  xvec.setX(xaxis0.X());
  xvec.setY(xaxis0.Y());
  xvec.setZ(xaxis0.Z());
  yvec.setX(yaxis0.X());
  yvec.setY(yaxis0.Y());
  yvec.setZ(yaxis0.Z());
  ROW = peak.getRow();
  COL = peak.getCol();
  Geometry::Instrument_const_sptr inst = peak.getInstrument();
  if (!inst)
    throw std::invalid_argument("No instrument for peak");
  std::shared_ptr<const IComponent> panel = inst->getComponentByName(peak.getBankName());
 
  std::shared_ptr<const RectangularDetector> ddet = std::dynamic_pointer_cast<const RectangularDetector>(panel);
 
  if (ddet) {
    std::pair<int, int> CR = ddet->getXYForDetectorID(det->getID());
    ROW = CR.second;
    COL = CR.first;
    pixWidthx = ddet->xstep();
    pixHeighty = ddet->ystep();
 
    NROWS = ddet->ypixels();
    NCOLS = ddet->xpixels();
 
    return;
  }
  // Get NROWS and NCOLS for other panels
  NROWS = NCOLS = -1;
 
  if (!panel)
    return;
  std::shared_ptr<const Component> compPanel = std::dynamic_pointer_cast<const Component>(panel);
  std::shared_ptr<IComponent> panel1(compPanel->base()->clone());
  BoundingBox B;
 
  Quat rot = panel1->getRotation();
 
  rot.inverse();
 
  panel1->rotate(rot);
 
  panel1->getBoundingBox(B);
 
  NROWS = boost::math::iround((B.yMax() - B.yMin()) / pixHeighty);
  NCOLS = boost::math::iround((B.xMax() - B.xMin()) / pixWidthx);
}
 
void IntegratePeakTimeSlices::updateStats(const double intensity, const double variance, const double row,
                                          const double col, std::vector<double> &StatBase) {
 
  StatBase[ISSIxx] += col * col * intensity;
  StatBase[ISSIyy] += intensity * row * row;
  StatBase[ISSIxy] += intensity * row * col;
  StatBase[ISSxx] += col * col;
  StatBase[ISSyy] += row * row;
  StatBase[ISSxy] += row * col;
  StatBase[ISSIx] += intensity * col;
  StatBase[ISSIy] += intensity * row;
  StatBase[ISSx] += col;
  StatBase[ISSy] += row;
  StatBase[IIntensities] += intensity;
  StatBase[IVariance] += variance;
  StatBase[ISS1] += 1;
}
 
std::vector<double> DataModeHandler::InitValues(double Varx, double Vary, double b) {
  std::vector<double> Res(7);
 
  Res[IVXX] = Varx;
  Res[IVYY] = Vary;
  Res[IVXY] = 0;
  auto nCells = static_cast<int>(StatBase[ISS1]);
  double Den = StatBase[IIntensities] - b * nCells;
  Res[IXMEAN] = (StatBase[ISSIx] - b * StatBase[ISSx]) / Den;
  Res[IYMEAN] = (StatBase[ISSIy] - b * StatBase[ISSy]) / Den;
  Res[IBACK] = b;
  Res[ITINTENS] = StatBase[IIntensities] - b * nCells;
 
  //---- Is Edge Cell ???-------
  double NstdX = 4 * (currentRadius / CellWidth - EdgeX) / sqrt(Varx);
  double NstdY = 4 * (currentRadius / CellHeight - EdgeY) / sqrt(Vary);
  double sigx = 1;
  double sigy = 1;
  if (NstdX < 0)
    sigx = -1;
  if (NstdY < 0)
    sigy = -1;
 
  double x = 1;
  if (sigy * NstdY < 7 && sigy * NstdY >= 0) // is close to row edge
  {
    x = probs[std::lround(sigy * NstdY)];
    if (sigy < 0)
      x = 1 - x;
    double My2 = StatBase[IStartRow];
    if (Res[IYMEAN] - My2 > My2 + StatBase[INRows] - Res[IYMEAN])
      My2 += StatBase[INRows];
    Res[IYMEAN] = Res[IYMEAN] * x + (1 - x) * My2;
  }
  double x1 = 1;
  if (sigx * NstdX < 7 && sigx * NstdX > 0) // is close to x edge
  {
    x1 = probs[std::lround(sigx * NstdX)];
    if (sigx < 0)
      x1 = 1 - x1;
    double Mx2 = StatBase[IStartCol];
    if (Res[IXMEAN] - Mx2 > Mx2 + StatBase[INCol] - Res[IXMEAN])
      Mx2 += StatBase[INCol];
    Res[IXMEAN] = Res[IXMEAN] * x1 + (1 - x1) * Mx2;
  }
  Res[ITINTENS] /= x * x1;
 
  return Res;
}
 
std::vector<double> DataModeHandler::GetParams(double b) {
 
  auto nCells = static_cast<int>(StatBase[ISS1]);
  double Den = StatBase[IIntensities] - b * nCells;
  double Varx, Vary;
 
  Varx = VarxHW;
  Vary = VaryHW;
 
  double Rx = lastRCRadius / CellWidth - EdgeX;
  double Ry = lastRCRadius / CellHeight - EdgeY;
  if (Varx <= 0)
    Varx = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
 
  if (Vary <= 0)
    Vary = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
  // Use
  if (Rx * Rx < 4 * Varx || Ry * Ry < 4 * Vary) {
    return InitValues(Varx, Vary, b);
  }
  if (Den < 0)
    return std::vector<double>();
 
  double Mx = StatBase[ISSIx] - b * StatBase[ISSx];
  double My = StatBase[ISSIy] - b * StatBase[ISSy];
 
  double Sxx = (StatBase[ISSIxx] - b * StatBase[ISSxx] - Mx * Mx / Den) / Den;
  double Syy = (StatBase[ISSIyy] - b * StatBase[ISSyy] - My * My / Den) / Den;
  double Sxy = (StatBase[ISSIxy] - b * StatBase[ISSxy] - Mx * My / Den) / Den;
 
  double Intensity = StatBase[IIntensities] - b * nCells;
  double col = Mx / Den;
  double row = My / Den;
  std::vector<double> Result(7);
  Result[IBACK] = b;
  Result[ITINTENS] = Intensity;
  Result[IXMEAN] = col;
  Result[IYMEAN] = row;
  Result[IVXX] = Sxx;
  Result[IVYY] = Syy;
  Result[IVXY] = Sxy;
 
  return Result;
}
 
bool DataModeHandler::setStatBase(std::vector<double> const &statBase)
 
{
  auto nBoundaryCells = static_cast<int>(statBase[INBoundary]);
  this->StatBase = statBase;
  double b = 0;
  if (nBoundaryCells > 0) {
    double TotBoundaryIntensities = statBase[ITotBoundary];
    b = TotBoundaryIntensities / nBoundaryCells;
  }
 
  auto nCells = static_cast<int>(statBase[ISS1]);
  double Den = statBase[IIntensities] - b * nCells;
  int k = 0;
  while (Den <= 0 && b != 0) {
    b = b * .7;
    Den = statBase[IIntensities] - b * nCells;
 
    if (k < 8)
      k++;
    else
      b = 0;
  }
 
  double Varx, Vary;
  Varx = statBase[INCol] / 7; // Range = 3.5 standard deviations
  Vary = statBase[INRows] / 7;
  Varx *= Varx;
  Vary *= Vary;
 
  double Rx = lastRCRadius / CellWidth - EdgeX;
  double Ry = lastRCRadius / CellHeight - EdgeY;
  if (CellWidth > 0 && currentRadius > 0 && lastCol > 0 && lastRow > 0)
    if (Rx * Rx < 4 * std::max(Varx, VarxHW) || HalfWidthAtHalfHeightRadius < 0 ||
        Ry * Ry < 4 * std::max(Vary, VaryHW)) // Edge peak so cannot use samples
    {
      Vx_calc = VarxHW;
      Vy_calc = VaryHW;
      Vxy_calc = 0;
      col_calc = lastCol;
      row_calc = lastRow;
      back_calc = b;
      Intensity_calc = statBase[IIntensities] - b * nCells;
      if (Vx_calc <= 0 || Vy_calc <= 0) // EdgePeak but not big enuf
        return true;
 
      const double params[] = {back_calc, Intensity_calc, col_calc, row_calc, Vx_calc, Vy_calc, Vxy_calc};
      double r = CalcSampleIntensityMultiplier(params);
      Intensity_calc *= r;
      return true;
    }
  if (Den <= 0)
    Den = 1;
 
  bool done = false;
  int ntimes = 0;
  double Mx = 0, My = 0, Sxx = 0, Syy = 0, Sxy = 0;
 
  double RangeX = statBase[INCol] / 2;
  double RangeY = statBase[INRows] / 2;
 
  while (!done && ntimes < 29) {
    Mx = statBase[ISSIx] - b * statBase[ISSx];
    My = statBase[ISSIy] - b * statBase[ISSy];
    Sxx = (statBase[ISSIxx] - b * statBase[ISSxx] - Mx * Mx / Den) / Den;
    Syy = (statBase[ISSIyy] - b * statBase[ISSyy] - My * My / Den) / Den;
    Sxy = (statBase[ISSIxy] - b * statBase[ISSxy] - Mx * My / Den) / Den;
    ntimes++;
    done = false;
 
    if (Sxx <= RangeX / 12 || Syy <= RangeY / 12 || Sxy * Sxy / Sxx / Syy > .9) {
      b = b * .95;
 
      if (ntimes + 1 == 29)
        b = 0;
 
      Den = statBase[IIntensities] - b * nCells;
      if (Den <= 1)
        Den = 1;
 
    } else
      done = true;
  }
 
  back_calc = b;
  Intensity_calc = statBase[IIntensities] - b * nCells;
  col_calc = Mx / Den;
  row_calc = My / Den;
  Vx_calc = Sxx;
  Vy_calc = Syy;
  Vxy_calc = Sxy;
  return false;
}
 
double DataModeHandler::getNewRCRadius() {
  double Vx, Vy;
  Vx = VarxHW;
  Vy = VaryHW;
  if (Vx < 0)
    Vx = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
  if (Vy < 0)
    Vy = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
 
  double Rx = lastRCRadius / CellWidth - EdgeX;
  double Ry = lastRCRadius / CellHeight - EdgeY;
  double mult = 1;
  if (Rx * Rx > 4 * Vx)
    Vx = std::max(VarxHW, Vx_calc);
  else
    mult = 1.35;
 
  if (Ry * Ry > 4 * Vy)
    Vy = std::max(VaryHW, Vy_calc);
  else
    mult *= 1.35;
 
  double DD = max<double>(sqrt(Vy) * CellHeight, sqrt(Vx) * CellWidth);
  double NewRadius = 1.4 * max<double>(MinRowColSpan * max<double>(CellWidth, CellHeight), 4.5 * DD);
  NewRadius = mult * min<double>(baseRCRadius, NewRadius);
  // 1.4 is needed to get more background cells. In rectangle the corners were
  // background
 
  NewRadius = min<double>(MaxRowColSpan * max<double>(CellWidth, CellHeight), NewRadius);
 
  return NewRadius;
}
 
void DataModeHandler::setHeightHalfWidthInfo(const std::vector<double> &xvals, const std::vector<double> &yvals,
                                             const std::vector<double> &counts) {
  double minCount, maxCount;
  const auto &X = xvals;
  const auto &Y = yvals;
  const auto &C = counts;
  VarxHW = -1;
  VaryHW = -1;
  auto N = static_cast<int>(X.size());
 
  HalfWidthAtHalfHeightRadius = -2;
 
  if (N <= 2)
    return;
 
  minCount = maxCount = C[0];
  double MaxX = -1;
  double MaxY = -1;
  int nmax = 0;
  double lowX, lowY, highX, highY;
  lowX = highX = X[0];
  lowY = highY = Y[0];
 
  for (int i = 1; i < N; i++) {
    if (X[i] < lowX)
      lowX = X[i];
    else if (X[i] > highX)
      highX = X[i];
 
    if (Y[i] < lowY)
      lowY = Y[i];
    else if (Y[i] > highY)
      highY = Y[i];
 
    if (C[i] > maxCount) {
      maxCount = C[i];
      MaxX = X[i];
      MaxY = Y[i];
      nmax = 1;
    } else if (C[i] < minCount) {
      minCount = C[i];
 
    } else if (C[i] == maxCount) // Get a tolerance on this
    {
      MaxX += X[i];
      MaxY += Y[i];
      nmax++;
    }
  }
  if (minCount == maxCount)
    return;
 
  MaxX /= nmax;
  MaxY /= nmax;
 
  double dCount = std::max(.51, (maxCount - minCount) / 6.2);
  double CountUp = (maxCount + minCount) / 2 + dCount;
  double CountLow = (maxCount + minCount) / 2 - dCount;
  double dSpanx = (highX - lowX) / 6.;
  double dSpany = (highY - lowY) / 6.0;
 
  int nMax = 0;
  int nMin = 0;
  double TotMax = 0;
  double TotMin = 0;
  double offset = std::max(.2, (maxCount - minCount) / 20);
  double TotR_max = 0;
  double TotR_min = 0;
  double TotRx0 = 0;
  double TotRy0 = 0;
  double TotCx = 0;
  double TotCy = 0;
  for (int i = 0; i < N; i++) {
    if (C[i] > maxCount - offset) {
      TotMax += C[i];
      nMax++;
      TotR_max += C[i] * sqrt((X[i] - MaxX) * (X[i] - MaxX) + (Y[i] - MaxY) * (Y[i] - MaxY));
    }
    if (C[i] < minCount + offset)
 
    {
      TotMin += C[i];
      nMin++;
 
      TotR_min += C[i] * sqrt((X[i] - MaxX) * (X[i] - MaxX) + (Y[i] - MaxY) * (Y[i] - MaxY));
    }
 
    if (fabs(MaxY - Y[i]) < 1.2 && fabs(MaxX - X[i]) > 1.2 && C[i] >= CountLow && C[i] <= CountUp &&
        fabs(MaxX - X[i]) < dSpanx) {
      TotRx0 += (C[i] - minCount) * (X[i] - MaxX) * (X[i] - MaxX);
      TotCx += C[i] - minCount;
    }
 
    if (fabs(MaxX - X[i]) < 1.2 && fabs(MaxY - Y[i]) > 1.2 && C[i] >= CountLow && C[i] <= CountUp &&
        fabs(MaxY - Y[i]) < dSpany) {
      TotRy0 += (C[i] - minCount) * (Y[i] - MaxY) * (Y[i] - MaxY);
      TotCy += C[i] - minCount;
    }
  }
 
  if (nMax + nMin == N) // all data are on two  levels essentially
  {
    if (TotMax <= 0)
      TotMax = 1;
    if (TotMin <= 0)
      TotMin = 1;
    double AvR = .5 * (TotR_max / TotMax + TotR_min / TotMin);
    HalfWidthAtHalfHeightRadius = AvR / .8326;
 
    VarxHW = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
    VaryHW = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
    return;
  }
 
  double TotR = 0, nR = -1, nRx = -1, nRy = -1;
  double MidVal = (TotMax / nMax + TotMin / nMin) / 2.0;
  double TotRx = 0, TotRy = 0;
  while ((nR <= 0 || nRy <= 0 || nRx <= 0) && offset < MidVal) {
    TotR = 0;
    nR = 0;
    TotRx = 0;
    TotRy = 0;
    nRx = 0;
    nRy = 0;
 
    for (int i = 0; i < N; i++)
      if (C[i] < MidVal + offset && C[i] > MidVal - offset) {
        double X1 = X[i] - MaxX;
        double Y1 = Y[i] - MaxY;
        TotR += sqrt(X1 * X1 + Y1 * Y1);
        nR++;
        if ((X1 >= -1.2 && X1 <= 1.2) && fabs(Y1) > 1.2 && fabs(Y1) < dSpany) {
          nRy++;
          TotRy += abs(Y1);
        }
        if ((Y1 >= -1.2 && Y1 <= 1.2) && fabs(X1) > 1.2 && fabs(X1) < dSpanx) {
          nRx++;
          TotRx += fabs(X1);
        }
      }
    offset *= 1.1;
  }
 
  double AvR = TotR / nR;
  HalfWidthAtHalfHeightRadius = AvR / .8326;
 
  if (nRx > 0)
    VarxHW = (TotRx / nRx) * (TotRx / nRx) / .8326 / .8326;
  else if (TotCx > 0)
    VarxHW = TotRx0 * TotRx0 / TotCx / TotCx / .8326 / .8326;
  else if (HalfWidthAtHalfHeightRadius > 0)
    VarxHW = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
  else
    VarxHW = -1;
 
  if (nRy > 0)
    VaryHW = (TotRy / nRy) * (TotRy / nRy) / .8326 / .8326;
  else if (TotCy > 0)
    VaryHW = TotRy0 * TotRy0 / TotCy / TotCy / .8326 / .8326;
  else if (HalfWidthAtHalfHeightRadius > 0)
    VaryHW = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
  else
    VaryHW = -1;
}
void IntegratePeakTimeSlices::SetUpData(MatrixWorkspace_sptr &Data, MatrixWorkspace_const_sptr const &inpWkSpace,
                                        const std::shared_ptr<Geometry::IComponent> &comp, const int chanMin,
                                        const int chanMax, double CentX, double CentY, Kernel::V3D &CentNghbr,
                                        double &neighborRadius, // from CentDetspec
                                        double Radius, string &spec_idList) {
 
  Kernel::V3D CentPos1 = m_center + m_xvec * (CentX - m_COL) * m_cellWidth + m_yvec * (CentY - m_ROW) * m_cellHeight;
 
  int NBadEdgeCells = getProperty("NBadEdgePixels");
 
  auto X = std::make_shared<DataModeHandler>(Radius, Radius, CentY, CentX, m_cellWidth, m_cellHeight,
                                             getProperty("CalculateVariances"), NBadEdgeCells, m_NCOLS - NBadEdgeCells,
                                             NBadEdgeCells, m_NROWS - NBadEdgeCells);
 
  m_AttributeValues = X;
  m_AttributeValues->setCurrentRadius(Radius);
  m_AttributeValues->setCurrentCenter(CentPos1);
 
  SetUpData1(Data, inpWkSpace, chanMin, chanMax, Radius, CentPos1, spec_idList);
 
  if (m_AttributeValues->StatBaseVals(ISSIxx) < 0) // Not enough data
    return;
 
  double NewRadius = m_AttributeValues->getNewRCRadius();
  if (m_R0 > 0) {
    NewRadius = m_R0;
  } else {
    m_R0 = NewRadius;
  }
 
  CentX = m_ParameterValues[IXMEAN];
  CentY = m_ParameterValues[IYMEAN];
  Kernel::V3D CentPos = m_center + m_xvec * (CentX - m_COL) * m_cellWidth + m_yvec * (CentY - m_ROW) * m_cellHeight;
 
  double DD = (CentPos - CentNghbr).norm();
 
  if (DD + NewRadius > neighborRadius) {
    auto NN = int(NStdDevPeakSpan * NeighborhoodRadiusDivPeakRadius * NewRadius / m_cellWidth * NStdDevPeakSpan *
                  NeighborhoodRadiusDivPeakRadius * NewRadius / m_cellHeight);
    if (m_NeighborIDs[0] < NN) {
      delete[] m_NeighborIDs;
      m_NeighborIDs = new int[NN + 2];
      m_NeighborIDs[0] = NN + 2;
    } // else
    // NN= m_NeighborIDs[0]-2;
    m_NeighborIDs[1] = 2;
    neighborRadius = NeighborhoodRadiusDivPeakRadius * NewRadius;
    CentNghbr = CentPos;
    getNeighborPixIDs(comp, CentPos, neighborRadius, m_NeighborIDs);
 
  } else // big enough neighborhood so
    neighborRadius -= DD;
 
  // if( changed) CentNghbr = CentPos.
  auto X1 = std::make_shared<DataModeHandler>(Radius, NewRadius, CentY, CentX, m_cellWidth, m_cellHeight,
                                              getProperty("CalculateVariances"), NBadEdgeCells, m_NCOLS - NBadEdgeCells,
                                              NBadEdgeCells, m_NROWS - NBadEdgeCells);
 
  m_AttributeValues = X1;
  m_AttributeValues->setCurrentRadius(NewRadius);
  m_AttributeValues->setCurrentCenter(CentPos);
  SetUpData1(Data, inpWkSpace, chanMin, chanMax, NewRadius, CentPos, spec_idList);
}
 
void IntegratePeakTimeSlices::SetUpData1(API::MatrixWorkspace_sptr &Data,
                                         API::MatrixWorkspace_const_sptr const &inpWkSpace, const int chanMin,
                                         const int chanMax, double Radius, const Kernel::V3D &CentPos,
                                         string &spec_idList) {
  UNUSED_ARG(g_log);
  if (m_NeighborIDs[1] < 10) {
    return;
  }
  std::vector<double> StatBase(NAttributes);
  std::shared_ptr<Workspace2D> ws = std::dynamic_pointer_cast<Workspace2D>(Data);
 
  int NBadEdges = getProperty("NBadEdgePixels");
  spec_idList.clear();
 
  for (int i = 0; i < NAttributes + 2; i++)
    StatBase.emplace_back(0);
 
  std::vector<double> yvalB;
  std::vector<double> errB;
  std::vector<double> xvalB;
  std::vector<double> YvalB;
 
  double TotBoundaryIntensities = 0;
  int nBoundaryCells = 0;
  double TotBoundaryVariances = 0;
 
  double BoundaryRadius = min<double>(.90 * Radius, Radius - 1.5 * max<double>(m_cellWidth, m_cellHeight));
  double minRow = 20000, maxRow = -1, minCol = 20000, maxCol = -1;
 
  int jj = 0;
 
  std::vector<double> xRef;
  for (int i = 2; i < m_NeighborIDs[1]; i++) {
    int DetID = m_NeighborIDs[i];
 
    size_t workspaceIndex;
    if (m_wi_to_detid_map.count(DetID) > 0)
      workspaceIndex = m_wi_to_detid_map.find(DetID)->second;
    else {
      throw std::runtime_error("No workspaceIndex for detID=" + std::to_string(DetID));
    }
 
    IDetector_const_sptr Det = inpWkSpace->getDetector(workspaceIndex);
    V3D pixPos = Det->getPos();
 
    if (i > 2)
      spec_idList += ",";
 
    V3D dist = pixPos - CentPos;
    if (dist.scalar_prod(dist) < Radius * Radius)
 
    {
      spec_idList += std::to_string(inpWkSpace->getSpectrum(workspaceIndex).getSpectrumNo());
 
      double R1 = dist.scalar_prod(m_yvec);
      double R1a = R1 / m_cellHeight;
 
      double row = m_ROW + R1a;
 
      double C1 = dist.scalar_prod(m_xvec);
      double C1a = C1 / m_cellWidth;
 
      double col = m_COL + C1a;
 
      if (row > NBadEdges && col > NBadEdges && (m_NROWS < 0 || row < m_NROWS - NBadEdges) &&
          (m_NCOLS < 0 || col < m_NCOLS - NBadEdges)) {
        const auto &histogram = inpWkSpace->y(workspaceIndex);
 
        const auto &histoerrs = inpWkSpace->e(workspaceIndex);
        double intensity = 0;
        double variance = 0;
        for (int chan = chanMin; chan <= chanMax; chan++) {
          intensity += histogram[chan];
          variance += histoerrs[chan] * histoerrs[chan];
        }
 
        yvalB.emplace_back(intensity);
        double sigma = 1;
 
        errB.emplace_back(sigma);
        xvalB.emplace_back(col);
        YvalB.emplace_back(row);
 
        xRef.emplace_back(static_cast<double>(jj));
        jj++;
 
        updateStats(intensity, variance, row, col, StatBase);
 
        if ((pixPos - CentPos).norm() > BoundaryRadius) {
          TotBoundaryIntensities += intensity;
          nBoundaryCells++;
 
          TotBoundaryVariances += variance;
        }
 
        if (row < minRow)
          minRow = row;
        if (col < minCol)
          minCol = col;
        if (row > maxRow)
          maxRow = row;
        if (col > maxCol)
          maxCol = col;
 
      } // if not bad edge
 
    } // peak within radius
  } // for each neighbor
 
  m_AttributeValues->EdgeY =
      max<double>(0.0, max<double>(-m_ROW + minRow + Radius / m_cellHeight, -maxRow + m_ROW + Radius / m_cellHeight));
  m_AttributeValues->EdgeX =
      max<double>(0.0, max<double>(-m_COL + minCol + Radius / m_cellWidth, -maxCol + m_COL + Radius / m_cellWidth));
  if (m_AttributeValues->EdgeY <= 1)
    m_AttributeValues->EdgeY = 0;
  if (m_AttributeValues->EdgeX <= 1)
    m_AttributeValues->EdgeX = 0;
 
  auto pX = Kernel::make_cow<HistogramData::HistogramX>(std::move(xRef));
  // Set the shared X and the counts together so the Histogram size invariant holds. The
  // workspace was allocated with an upper-bound number of points and is resized here to the
  // number of valid neighbour pixels actually collected. Calling setSharedX on its own would
  // be rejected, because the not-yet-resized Y still has the original (larger) length.
  ws->setHistogram(0, Points(pX), Counts(yvalB), CountStandardDeviations(errB));
  ws->setHistogram(1, Points(pX), Counts(xvalB));
  ws->setHistogram(2, Points(pX), Counts(YvalB));
  m_AttributeValues->setHeightHalfWidthInfo(xvalB, YvalB, yvalB);
 
  StatBase[IStartRow] = minRow;
  StatBase[IStartCol] = minCol;
  StatBase[INRows] = maxRow - minRow + 1;
  StatBase[INCol] = maxCol - minCol + 1;
 
  StatBase[ITotBoundary] = TotBoundaryIntensities;
  StatBase[INBoundary] = nBoundaryCells;
  StatBase[IVarBoundary] = TotBoundaryVariances;
  m_EdgePeak = m_AttributeValues->setStatBase(StatBase);
 
  m_ParameterValues[IBACK] = m_AttributeValues->getInitBackground();
  m_ParameterValues[ITINTENS] = m_AttributeValues->getInitIntensity();
  m_ParameterValues[IXMEAN] = m_AttributeValues->getInitCol();
  m_ParameterValues[IYMEAN] = m_AttributeValues->getInitRow();
  m_ParameterValues[IVXX] = m_AttributeValues->getInitVarx();
  m_ParameterValues[IVYY] = m_AttributeValues->getInitVary();
  m_ParameterValues[IVXY] = m_AttributeValues->getInitVarxy();
}
 
int IntegratePeakTimeSlices::findTimeChannel(const HistogramX &X, const double time) {
  int sgn = 1;
 
  if (X[0] > X[1])
    sgn = -1;
 
  if (sgn * (X[0] - time) >= 0)
    return 0;
 
  if (sgn * (time - X[X.size() - 1u]) >= 0)
    return static_cast<int>(X.size()) - 1;
 
  size_t end = X.size() - 1u;
  for (size_t i = 0; i < end; i++) {
    if (sgn * (time - X[i]) >= 0 && sgn * (X[i + 1u] - time) >= 0)
      return static_cast<int>(i);
  }
 
  return -1;
}
 
bool DataModeHandler::isEdgePeak(const double *params, int nparams) {
  double Varx = HalfWidthAtHalfHeightRadius * HalfWidthAtHalfHeightRadius;
  double Vary = Varx;
  if (nparams > 4) {
    Varx = params[IVXX];
    Vary = params[IVYY];
  }
 
  if (Varx <= 0 || Vary <= 0 || HalfWidthAtHalfHeightRadius <= 0)
    return true;
 
  double Rx = lastRCRadius / CellWidth - EdgeX;  // span from center in x direction
  double Ry = lastRCRadius / CellHeight - EdgeY; // span from center  in y direction
 
  return Rx * Rx < NStdDevPeakSpan * NStdDevPeakSpan * std::max(Varx, VarxHW) ||
         Ry * Ry < NStdDevPeakSpan * NStdDevPeakSpan * std::max(Vary, VaryHW);
}
 
std::string IntegratePeakTimeSlices::CalculateFunctionProperty_Fit() {
 
  std::ostringstream fun_str;
 
  fun_str << "name=BivariateNormal,";
 
  if (m_AttributeValues->CalcVariances())
    fun_str << "CalcVariances=1";
  else
    fun_str << "CalcVariances=-1";
 
  int NN = NParameters;
  if (m_AttributeValues->CalcVariances())
    NN -= 3;
 
  for (int i = 0; i < NN; i++) {
    fun_str << "," << m_ParameterNames[i] << "=" << m_ParameterValues[i];
  }
 
  return fun_str.str();
}
 
int IntegratePeakTimeSlices::findNameInVector(std::string const &oneName, std::vector<std::string> const &nameList)
 
{
  const auto it = std::find(nameList.cbegin(), nameList.cend(), oneName);
  if (it != nameList.cend()) {
    return static_cast<int>(std::distance(nameList.cbegin(), it));
  }
  return -1;
}
 
DataModeHandler::DataModeHandler(const DataModeHandler &handler) {
 
  this->baseRCRadius = handler.baseRCRadius;
  this->lastRCRadius = handler.lastRCRadius;
  this->HalfWidthAtHalfHeightRadius = handler.HalfWidthAtHalfHeightRadius;
  this->calcNewRCRadius = handler.calcNewRCRadius;
  this->lastRow = handler.lastRow;
  this->lastCol = handler.lastCol;
  this->time = handler.time;
  this->CellWidth = handler.CellWidth;
  this->CellHeight = handler.CellHeight;
  this->currentRadius = handler.currentRadius;
  this->currentPosition = handler.currentPosition;
  this->StatBase = handler.StatBase;
  this->EdgeX = handler.EdgeX;
  this->EdgeY = handler.EdgeY;
  this->CalcVariance = handler.CalcVariance;
  this->VarxHW = handler.VarxHW;
  this->VaryHW = handler.VaryHW;
  this->MaxRow = handler.MaxRow;
  this->MaxCol = handler.MaxCol;
  this->MinRow = handler.MinRow;
  this->MinCol = handler.MinCol;
  this->lastISAWIntensity = handler.lastISAWIntensity;
  this->lastISAWVariance = handler.lastISAWIntensity;
  this->back_calc = handler.back_calc;
  this->Intensity_calc = handler.Intensity_calc;
  this->row_calc = handler.row_calc;
  this->col_calc = handler.col_calc;
  this->Vx_calc = handler.Vx_calc;
  this->Vy_calc = handler.Vy_calc;
  this->Vxy_calc = handler.Vxy_calc;
  this->case4 = handler.case4;
}
void DataModeHandler::CalcVariancesFromData(double background, double meanx, double meany, double &Varxx, double &Varxy,
                                            double &Varyy, const std::vector<double> &StatBase) {
 
  double Den = StatBase[IIntensities] - background * StatBase[ISS1];
  Varxx = (StatBase[ISSIxx] - 2 * meanx * StatBase[ISSIx] + meanx * meanx * StatBase[IIntensities] -
           background * (StatBase[ISSxx] - 2 * meanx * StatBase[ISSx] + meanx * meanx * StatBase[ISS1])) /
          Den;
 
  Varyy = (StatBase[ISSIyy] - 2 * meany * StatBase[ISSIy] + meany * meany * StatBase[IIntensities] -
           background * (StatBase[ISSyy] - 2 * meany * StatBase[ISSy] + meany * meany * StatBase[ISS1])) /
          Den;
 
  Varxy =
      (StatBase[ISSIxy] - meanx * StatBase[ISSIy] - meany * StatBase[ISSIx] + meanx * meany * StatBase[IIntensities] -
       background *
           (StatBase[ISSxy] - meanx * StatBase[ISSy] - meany * StatBase[ISSx] + meanx * meany * StatBase[ISS1])) /
      Den;
 
  if (CalcVariances()) {
 
    Varxx = std::min(Varxx, 1.21 * getInitVarx()); // copied from BiVariateNormal
    Varxx = std::max(Varxx, .79 * getInitVarx());
    Varyy = std::min(Varyy, 1.21 * getInitVary());
    Varyy = std::max(Varyy, .79 * getInitVary());
  }
}
std::string DataModeHandler::CalcConstraints(std::vector<std::pair<double, double>> &Bounds, bool CalcVariances) {
  double TotIntensity = StatBase[IIntensities];
  double ncells = StatBase[ISS1];
  double Variance = StatBase[IVariance];
  double TotBoundaryIntensities = StatBase[ITotBoundary];
  double TotBoundaryVariances = StatBase[IVarBoundary];
 
  double nBoundaryCells = StatBase[INBoundary];
  double back = TotBoundaryIntensities / nBoundaryCells;
  double backVar = std::max(nBoundaryCells / 50.0, TotBoundaryVariances) / nBoundaryCells / nBoundaryCells;
  double IntensVar = Variance + ncells * ncells * backVar;
 
  double relError = .25;
 
  if (back_calc != back)
    relError = .45;
 
  int N = NParameters;
  if (CalcVariances)
    N = N - 3;
 
  double NSigs = NStdDevPeakSpan;
  if (back_calc > 0)
    NSigs = std::max(NStdDevPeakSpan,
                     7 - 5 * back_calc / back); // background too high
  ostringstream str;
 
  NSigs *= max<double>(1.0, Intensity_calc / (TotIntensity - ncells * back_calc));
  str << max<double>(0.0, back_calc - NSigs * (1 + relError) * sqrt(backVar)) << "<Background<"
      << (back + NSigs * (1.8 + relError) * sqrt(backVar)) << ","
      << max<double>(0.0, Intensity_calc - NSigs * (1 + relError) * sqrt(IntensVar)) << "<Intensity<"
      << Intensity_calc + NSigs * (1 + relError) * sqrt(IntensVar);
 
  double min = max<double>(0.0, back_calc - NSigs * (1 + relError) * sqrt(backVar));
  double maxx = back + NSigs * (1.8 + relError) * sqrt(backVar);
  Bounds.emplace_back(min, maxx);
  Bounds.emplace_back(max<double>(0.0, Intensity_calc - NSigs * (1 + relError) * sqrt(IntensVar)),
                      Intensity_calc + NSigs * (1 + relError) * sqrt(IntensVar));
  double relErr1 = relError * .75;
  double val = col_calc;
  double minn = std::max(MinCol - .5, (1 - relErr1) * val);
  maxx = std::min((1 + relErr1) * val, MaxCol + .5);
 
  str << "," << minn << "<"
      << "Mcol"
      << "<" << maxx;
  Bounds.emplace_back(minn, maxx);
 
  val = row_calc;
 
  minn = std::max(MinRow - .5, (1 - relErr1) * val);
  maxx = std::min((1 + relErr1) * val, MaxRow + .5);
  str << "," << minn << "<"
      << "Mrow"
      << "<" << maxx;
  Bounds.emplace_back(minn, maxx);
 
  if (N >= 5) {
    val = Vx_calc;
    double valmin = val;
    double valmax = val;
    if (VarxHW > 0) {
      valmin = std::min(val, VarxHW);
      valmax = std::max(val, VarxHW);
    }
 
    relErr1 *= .6; // Edge peaks: need to restrict sigmas.
    str << "," << (1 - relErr1) * valmin << "<"
        << "SScol"
        << "<" << (1 + relErr1) * valmax;
    Bounds.emplace_back((1 - relErr1) * valmin, (1 + relErr1) * valmax);
 
    val = Vy_calc;
    valmin = val;
    valmax = val;
    if (VaryHW > 0) {
      valmin = std::min(val, VaryHW);
      valmax = std::max(val, VaryHW);
    }
    str << "," << (1 - relErr1) * valmin << "<"
        << "SSrow"
        << "<" << (1 + relErr1) * valmax;
    Bounds.emplace_back((1 - relErr1) * valmin, (1 + relErr1) * valmax);
  }
 
  return str.str();
}
 
void IntegratePeakTimeSlices::Fit(const MatrixWorkspace_sptr &Data, double &chisqOverDOF, bool &done,
                                  std::vector<string> &names, std::vector<double> &params, std::vector<double> &errs,
                                  double lastRow, double lastCol, double neighborRadius) {
 
  bool CalcVars = m_AttributeValues->CalcVariances();
  std::vector<std::pair<double, double>> Bounds;
  std::string Constraints = m_AttributeValues->CalcConstraints(Bounds, CalcVars);
  auto fit_alg = createChildAlgorithm("Fit");
  std::string fun_str = CalculateFunctionProperty_Fit();
 
  std::string SSS("   Fit string ");
  SSS += fun_str;
  g_log.debug(SSS);
  g_log.debug() << "      TotCount=" << m_AttributeValues->StatBase[IIntensities] << '\n';
 
  fit_alg->setPropertyValue("Function", fun_str);
 
  fit_alg->setProperty("InputWorkspace", Data);
  fit_alg->setProperty("WorkspaceIndex", 0);
  fit_alg->setProperty("StartX", 0.0);
  fit_alg->setProperty("EndX", 0.0 + static_cast<double>(m_NeighborIDs[1]));
  fit_alg->setProperty("MaxIterations", 5000);
  fit_alg->setProperty("CreateOutput", true);
 
  fit_alg->setProperty("Output", "out");
 
  fit_alg->setProperty("MaxIterations", 50);
 
  std::string tie = getProperty("Ties");
  if (tie.length() > static_cast<size_t>(0))
    fit_alg->setProperty("Ties", tie);
  if (Constraints.length() > static_cast<size_t>(0))
    fit_alg->setProperty("Constraints", Constraints);
  try {
    fit_alg->executeAsChildAlg();
 
    chisqOverDOF = fit_alg->getProperty("OutputChi2overDoF");
    std::string outputStatus = fit_alg->getProperty("OutputStatus");
    g_log.debug() << "Chisq/OutputStatus=" << chisqOverDOF << "/" << outputStatus << '\n';
 
    names.clear();
    params.clear();
    errs.clear();
    ITableWorkspace_sptr RRes = fit_alg->getProperty("OutputParameters");
    for (int prm = 0; prm < static_cast<int>(RRes->rowCount()) - 1; prm++) {
      names.emplace_back(RRes->getRef<string>("Name", prm));
      params.emplace_back(RRes->getRef<double>("Value", prm));
      double error = RRes->getRef<double>("Error", prm);
      errs.emplace_back(error);
    }
    if (names.size() < 5) {
      names.emplace_back(m_ParameterNames[IVXX]);
      names.emplace_back(m_ParameterNames[IVYY]);
      names.emplace_back(m_ParameterNames[IVXY]);
      double Varxx, Varxy, Varyy;
      m_AttributeValues->CalcVariancesFromData(params[IBACK], params[IXMEAN], params[IYMEAN], Varxx, Varxy, Varyy,
                                               m_AttributeValues->StatBase);
      params.emplace_back(Varxx);
      params.emplace_back(Varyy);
      params.emplace_back(Varxy);
      errs.emplace_back(0);
      errs.emplace_back(0);
      errs.emplace_back(0);
    }
 
  } catch (std::exception &Ex1) // ties or something else went wrong in BivariateNormal
  {
    done = true;
    g_log.error() << "Bivariate Error for PeakNum=" << static_cast<int>(getProperty("PeakIndex")) << ":"
                  << std::string(Ex1.what()) << '\n';
  } catch (...) {
    done = true;
    g_log.error() << "Bivariate Error A for peakNum=" << static_cast<int>(getProperty("PeakIndex")) << '\n';
  }
  if (!done) // Bivariate error happened
  {
 
    g_log.debug() << "   Thru Algorithm: chiSq=" << setw(7) << chisqOverDOF << '\n';
    g_log.debug() << "  Row,Col Radius=" << lastRow << "," << lastCol << "," << neighborRadius << '\n';
 
    double sqrtChisq = -1;
    if (chisqOverDOF >= 0)
      sqrtChisq = (chisqOverDOF);
 
    sqrtChisq =
        max<double>(sqrtChisq, m_AttributeValues->StatBaseVals(IIntensities) / m_AttributeValues->StatBaseVals(ISS1));
    sqrtChisq = SQRT(sqrtChisq);
 
    for (size_t kk = 0; kk < params.size(); kk++) {
      g_log.debug() << "   Parameter " << setw(8) << names[kk] << " " << setw(8) << params[kk];
      // if (names[kk].substr(0, 2) != string("SS"))
      g_log.debug() << "(" << setw(8) << (errs[kk] * sqrtChisq) << ")";
      if (Bounds.size() > kk) {
        pair<double, double> upLow = Bounds[kk];
        g_log.debug() << " Bounds(" << upLow.first << "," << upLow.second << ")";
      }
      g_log.debug() << '\n';
    }
 
    double intensity = m_AttributeValues->CalcISAWIntensity(params.data());
    g_log.debug() << "IsawIntensity= " << intensity << '\n';
  }
}
 
void IntegratePeakTimeSlices::PreFit(const MatrixWorkspace_sptr &Data, double &chisqOverDOF, bool &done,
                                     std::vector<string> &names, std::vector<double> &params, std::vector<double> &errs,
                                     double lastRow, double lastCol, double neighborRadius) {
 
  double background = m_ParameterValues[IBACK];
  int N = 3;
  if (background <= 0) {
    background = 0;
    N = 1;
  }
  bool CalcVars = m_AttributeValues->CalcVariances();
  int NParams = 4;
  if (!CalcVars)
    NParams += 3;
 
  double minChiSqOverDOF = -1;
  double Bestparams[7];
  std::string Bestnames[7];
  for (int i = 0; i < N; i++) {
    Fit(Data, chisqOverDOF, done, names, params, errs, lastRow, lastCol, neighborRadius);
    g_log.debug() << "-----------------------" << i << "--------------------------\n";
    if ((minChiSqOverDOF < 0 || chisqOverDOF < minChiSqOverDOF) && (chisqOverDOF > 0) && !done) {
      for (int j = 0; j < NParams; j++) {
        Bestparams[j] = m_ParameterValues[j];
        Bestnames[j] = m_ParameterNames[j];
      }
      minChiSqOverDOF = chisqOverDOF;
    }
 
    // Next round, reduce background
    background = background / 2;
    if (i + 1 == N - 1)
      background = 0;
 
    std::vector<double> prms = m_AttributeValues->GetParams(background);
 
    for (int j = 0; j < NParams; j++)
      m_ParameterValues[j] = prms[j];
  }
  vector<std::string> ParNames(m_ParameterNames, m_ParameterNames + NParams);
  for (int i = 0; i < NParams; i++) {
    int k = findNameInVector(Bestnames[i], ParNames);
    if (k >= 0 && k < NParams)
      m_ParameterValues[k] = Bestparams[k];
  }
 
  Fit(Data, chisqOverDOF, done, names, params, errs, lastRow, lastCol, neighborRadius);
}
 
bool IntegratePeakTimeSlices::isGoodFit(std::vector<double> const &params, std::vector<double> const &errs,
                                        std::vector<std::string> const &names, double chisqOverDOF) {
  int Ibk = findNameInVector("Background", names);
  if (Ibk < 0)
    throw std::runtime_error("Irrecoverable inconsistency found. The index for the "
                             "parameter 'Background' is lower than zero.");
 
  int IIntensity = findNameInVector("Intensity", names);
  if (IIntensity < 0)
    throw std::runtime_error("Irrecoverable inconsistency found. The index for the "
                             "parameter 'Intensity' is lower than zero.");
 
  if (chisqOverDOF < 0) {
 
    g_log.debug() << "   Bad Slice- negative chiSq= " << chisqOverDOF << '\n';
    ;
    return false;
  }
 
  int NBadEdgeCells = getProperty("NBadEdgePixels");
  NBadEdgeCells = static_cast<int>(.6 * NBadEdgeCells);
  if (params[IXMEAN] < NBadEdgeCells || params[IYMEAN] < NBadEdgeCells || params[IXMEAN] > m_NCOLS - NBadEdgeCells ||
      params[IYMEAN] > m_NROWS - NBadEdgeCells)
    return false;
 
  auto ncells = static_cast<int>(m_AttributeValues->StatBaseVals(ISS1));
 
  if (m_AttributeValues->StatBaseVals(IIntensities) <= 0 ||
      (m_AttributeValues->StatBaseVals(IIntensities) - params[Ibk] * ncells) <= 0) {
 
    g_log.debug() << "   Bad Slice. Negative Counts= "
                  << m_AttributeValues->StatBaseVals(IIntensities) - params[Ibk] * ncells << '\n';
    ;
    return false;
  }
 
  double x = params[IIntensity] / (m_AttributeValues->StatBaseVals(IIntensities) - params[Ibk] * ncells);
 
  if ((x < MinGoodRatioFitvsExpIntenisites || x > MaxGoodRatioFitvsExpIntenisites) &&
      !m_EdgePeak) // The fitted intensity should be close to tot intensity -
                   // background
  {
    g_log.debug() << "   Bad Slice. Fitted Intensity & Observed "
                     "Intensity(-back) too different. ratio="
                  << x << '\n';
 
    return false;
  }
 
  bool GoodNums = true;
  bool paramBad = false;
  auto BadParamNum = static_cast<size_t>(-1);
  for (size_t i = 0; i < errs.size(); i++)
    if (errs[i] != errs[i]) {
      GoodNums = false;
      paramBad = false;
      BadParamNum = i;
    } else if (errs[i] < 0) {
      GoodNums = false;
      paramBad = false;
      BadParamNum = i;
    } else if (params[i] != params[i]) {
      GoodNums = false;
      paramBad = true;
      BadParamNum = i;
    }
 
  if (!GoodNums) {
    std::string obj = " parameter ";
    if (!paramBad)
      obj = " error ";
    g_log.debug() << "   Bad Slice." << obj << BadParamNum << " is not a number\n";
    return false;
  }
 
  GoodNums = true;
 
  std::string Err("back ground is negative");
  if (params[Ibk] < -.002)
    GoodNums = false;
 
  if (GoodNums)
    Err = "Intensity is negative";
  if (params[IIntensity] < 0)
    GoodNums = false;
 
  double IsawIntensity = m_AttributeValues->CalcISAWIntensity(params.data());
  double IsawVariance = m_AttributeValues->CalcISAWIntensityVariance(params.data(), errs.data(), chisqOverDOF);
  if (GoodNums)
    Err = "Isaw Variance is negative";
  if (IsawVariance > 0) {
    if (GoodNums)
      Err = "I/sigI > 3";
    if (IsawIntensity * IsawIntensity / IsawVariance < MinGoodIoverSigI * MinGoodIoverSigI)
      GoodNums = false;
  } else
    GoodNums = false;
 
  if (!GoodNums)
 
  {
    g_log.debug() << Err << '\n';
 
    return false;
  }
 
  // Check weak peak. Max theoretical height should be more than 3
 
  double maxPeakHeightTheoretical =
      params[ITINTENS] / 2 / M_PI / sqrt(params[IVXX] * params[IVYY] - params[IVXY] * params[IVXY]);
 
  double AvHeight =
      m_AttributeValues->StatBaseVals(IIntensities) / m_AttributeValues->StatBaseVals(ISS1) - params[IBACK];
 
  if (maxPeakHeightTheoretical < 2 * AvHeight || AvHeight < 0 || maxPeakHeightTheoretical < 0) {
 
    g_log.debug() << "   Bad Slice. Peak too small= " << maxPeakHeightTheoretical << "/" << AvHeight << '\n';
    return false;
  }
 
  double Nrows = std::max(m_AttributeValues->StatBase[INRows], m_AttributeValues->StatBase[INCol]);
  if (maxPeakHeightTheoretical < 1 && (params[IVXX] > Nrows * Nrows / 4 || params[IVYY] > Nrows * Nrows / 4)) {
    g_log.debug() << "Peak is too flat \n";
    return false;
  }
 
  // Exponential too steep, i.e. intensities at pixels 1 from center are <3*
  // intensity center
  if (params[IVXX] + params[IVYY] > 2.6 * (params[IVXX] * params[IVYY] - params[IVXY] * params[IVXY])) {
    g_log.debug() << "      Bad Slice. Too steep of an exponential\n";
    return false;
  }
 
  return true;
}
 
bool DataModeHandler::IsEnoughData(const double *ParameterValues, Kernel::Logger & /*unused*/) {
  // Check if flat
  double Varx, Vary, Cov;
 
  if (StatBase.empty())
    return false;
 
  double ncells = static_cast<int>(StatBase[IIntensities]);
  if (ncells <= 0)
    return false;
 
  double meanx = StatBase[ISSIx] / ncells;
  double meany = StatBase[ISSIy] / ncells;
 
  if (!CalcVariances()) {
    Varx = ParameterValues[IVXX];
    Vary = ParameterValues[IVYY];
    Cov = ParameterValues[IVXY];
 
  } else
    CalcVariancesFromData(ParameterValues[0], meanx, meany, Varx, Cov, Vary, StatBase);
 
  if (Varx < MinVariationInXYvalues || Vary < MinVariationInXYvalues) // All data essentially the same.
    return false;
 
  if (Cov * Cov > MaxCorrCoeffinXY * Varx * Vary) // All data on a obtuse line
    return false;
 
  return true;
}
 
double IntegratePeakTimeSlices::CalculateIsawIntegrateError(const double background, const double backError,
                                                            const double ChiSqOverDOF, const double TotVariance,
                                                            const int ncells) {
 
  double B = TotVariance / ncells;
  if (B < ChiSqOverDOF)
    B = ChiSqOverDOF;
 
  double Variance = TotVariance + (backError * backError * B) * ncells * ncells + background * ncells;
 
  return SQRT(Variance);
}
 
void IntegratePeakTimeSlices::InitializeColumnNamesInTableWorkspace(TableWorkspace_sptr &TabWS) {
  // TabWS->setName("Log Table");
  TabWS->addColumn("double", "Time");
  TabWS->addColumn("double", "Channel");
  TabWS->addColumn("double", "Background");
  TabWS->addColumn("double", "Intensity");
  TabWS->addColumn("double", "Mcol");
  TabWS->addColumn("double", "Mrow");
  TabWS->addColumn("double", "SScol");
  TabWS->addColumn("double", "SSrow");
  TabWS->addColumn("double", "SSrc");
  TabWS->addColumn("double", "NCells");
  TabWS->addColumn("double", "ChiSqrOverDOF");
  TabWS->addColumn("double", "TotIntensity");
  TabWS->addColumn("double", "BackgroundError");
  TabWS->addColumn("double", "FitIntensityError");
  TabWS->addColumn("double", "ISAWIntensity");
  TabWS->addColumn("double", "ISAWIntensityError");
  TabWS->addColumn("double", "TotalBoundary");
  TabWS->addColumn("double", "NBoundaryCells");
  TabWS->addColumn("double", "Start Row");
  TabWS->addColumn("double", "End Row");
  TabWS->addColumn("double", "Start Col");
  TabWS->addColumn("double", "End Col");
  TabWS->addColumn("double", "TotIntensityError");
  TabWS->addColumn("str", "SpecIDs");
}
 
int IntegratePeakTimeSlices::UpdateOutputWS(DataObjects::TableWorkspace_sptr &TabWS, const int dir, const double chan,
                                            std::vector<double> const &params, std::vector<double> const &errs,
                                            std::vector<std::string> const &names, const double Chisq,
                                            const double time, string spec_idList) {
  int Ibk = findNameInVector("Background", names);
  int IIntensity = findNameInVector("Intensity", names);
  int IVx = findNameInVector("SScol", names);
  int IVy = findNameInVector("SSrow", names);
  int IVxy = findNameInVector("SSrc", names);
  int Irow = findNameInVector("Mrow", names);
  int Icol = findNameInVector("Mcol", names);
 
  if (Ibk < 0 || IIntensity < 0 || IVx < 0 || IVy < 0 || IVxy < 0 || Irow < 0 || Icol < 0) {
    throw std::runtime_error("Inconsistency found when updating output "
                             "workspace. None of the indices for the "
                             "parameters 'Background', 'Intensity', 'SScol', "
                             "'SSrow', 'SSrc', 'Mrow', 'Mcol' can be "
                             "negative.");
  }
 
  int newRowIndex = 0;
 
  if (dir > 0)
    newRowIndex = static_cast<int>(TabWS->rowCount());
 
  auto TableRow = static_cast<int>(TabWS->insertRow(newRowIndex));
 
  auto ncells = static_cast<int>(m_AttributeValues->StatBaseVals(ISS1));
  double chisq = max<double>(Chisq, m_AttributeValues->StatBaseVals(IIntensities) / max<int>(ncells, 1));
 
  TabWS->getRef<double>(std::string("Background"), TableRow) = params[Ibk];
  TabWS->getRef<double>(std::string("Channel"), TableRow) = chan;
 
  TabWS->getRef<double>(std::string("Intensity"), TableRow) = params[IIntensity];
  TabWS->getRef<double>(std::string("FitIntensityError"), TableRow) = errs[IIntensity] * sqrt(chisq);
  TabWS->getRef<double>(std::string("Mcol"), TableRow) = params[Icol];
  TabWS->getRef<double>(std::string("Mrow"), TableRow) = params[Irow];
 
  TabWS->getRef<double>(std::string("SScol"), TableRow) = params[IVx];
  TabWS->getRef<double>(std::string("SSrow"), TableRow) = params[IVy];
 
  TabWS->getRef<double>(std::string("SSrc"), TableRow) = params[IVxy];
  TabWS->getRef<double>(std::string("NCells"), TableRow) = ncells;
  TabWS->getRef<double>(std::string("ChiSqrOverDOF"), TableRow) = chisq;
 
  TabWS->getRef<double>(std::string("TotIntensity"), TableRow) = m_AttributeValues->StatBaseVals(IIntensities);
  TabWS->getRef<double>(std::string("BackgroundError"), TableRow) = errs[Ibk] * SQRT(chisq);
  TabWS->getRef<double>(std::string("ISAWIntensity"), TableRow) = m_AttributeValues->CalcISAWIntensity(params.data());
  // m_AttributeValues->StatBaseVals(IIntensities)
  //                                                                   -
  //                                                                   params[Ibk]
  //                                                                   * ncells;
 
  TabWS->getRef<double>(std::string("ISAWIntensityError"), TableRow) =
      sqrt(m_AttributeValues->CalcISAWIntensityVariance(params.data(), errs.data(), Chisq));
 
  // CalculateIsawIntegrateError(
  // params[Ibk], errs[Ibk], chisq, m_AttributeValues->StatBaseVals(IVariance),
  // ncells);
 
  TabWS->getRef<double>(std::string("Time"), TableRow) = time;
 
  TabWS->getRef<double>(std::string("TotalBoundary"), TableRow) = m_AttributeValues->StatBaseVals(ITotBoundary);
  TabWS->getRef<double>(std::string("NBoundaryCells"), TableRow) = m_AttributeValues->StatBaseVals(INBoundary);
 
  TabWS->getRef<double>(std::string("Start Row"), TableRow) = m_AttributeValues->StatBaseVals(IStartRow);
  TabWS->getRef<double>(std::string("End Row"), TableRow) =
      m_AttributeValues->StatBaseVals(IStartRow) + m_AttributeValues->StatBaseVals(INRows) - 1;
 
  TabWS->getRef<double>(std::string("Start Col"), TableRow) = m_AttributeValues->StatBaseVals(IStartCol);
  TabWS->getRef<double>(std::string("End Col"), TableRow) =
      m_AttributeValues->StatBaseVals(IStartCol) + m_AttributeValues->StatBaseVals(INCol) - 1;
  TabWS->getRef<double>(std::string("TotIntensityError"), TableRow) = SQRT(m_AttributeValues->StatBaseVals(IVariance));
  TabWS->getRef<string>(std::string("SpecIDs"), TableRow) = std::move(spec_idList);
 
  return newRowIndex;
}
 
void IntegratePeakTimeSlices::updatePeakInformation(std::vector<double> const &params, std::vector<double> const &errs,
                                                    std::vector<std::string> const &names, double &TotVariance,
                                                    double &TotIntensity, double const TotSliceIntensity,
                                                    double const TotSliceVariance, double const chisqdivDOF,
                                                    const int ncells) {
  UNUSED_ARG(TotSliceIntensity);
  UNUSED_ARG(TotSliceVariance);
  UNUSED_ARG(names);
  UNUSED_ARG(ncells);
 
  double err = 0;
  double intensity = 0;
 
  err = m_AttributeValues->CalcISAWIntensityVariance(params.data(), errs.data(), chisqdivDOF);
 
  intensity = m_AttributeValues->CalcISAWIntensity(params.data());
  TotIntensity += intensity;
 
  TotVariance += err;
  g_log.debug() << "TotIntensity/TotVariance=" << TotIntensity << "/" << TotVariance << '\n';
}
 
bool DataModeHandler::CalcVariances() {
  if (!CalcVariance)
    return false;
 
  const double param[7] = {back_calc, Intensity_calc, col_calc, row_calc, Vx_calc, Vy_calc, Vxy_calc};
  return !isEdgePeak(param, 7);
}
 
double DataModeHandler::CalcISAWIntensity(const double *params) {
 
  double ExperimentalIntensity = StatBase[IIntensities] - params[IBACK] * StatBase[ISS1];
 
  double r = CalcSampleIntensityMultiplier(params);
 
  double alpha = .5 * (r - 1.0);
  alpha = std::min(1.0, alpha);
 
  lastISAWIntensity = ExperimentalIntensity * r; //*( 1-alpha )+ alpha * FitIntensity;
  return lastISAWIntensity;
}
double DataModeHandler::CalcISAWIntensityVariance(const double *params, const double *errs, double chiSqOvDOF) {
 
  auto ncells = static_cast<int>(StatBase[ISS1]);
  double B = StatBase[IVariance] / ncells;
  if (B < chiSqOvDOF)
    B = chiSqOvDOF;
 
  double ExperimVar = StatBase[IVariance];
  double IntensityBackError = errs[IBACK] * sqrt(B);
 
  ExperimVar += IntensityBackError * IntensityBackError * ncells * ncells + params[IBACK] * ncells;
 
  double r = CalcSampleIntensityMultiplier(params);
  double alpha = .5 * (r - 1.0);
  alpha = std::min(1.0, alpha);
 
  lastISAWVariance = ExperimVar * r * r; //*( 1 - alpha ) + alpha * FitVar;
  return lastISAWVariance;
}
 
double DataModeHandler::CalcSampleIntensityMultiplier(const double *params) const {
  auto minRow = static_cast<int>(StatBase[IStartRow]);
  int maxRow = minRow + static_cast<int>(StatBase[INRows]) - 1;
  auto minCol = static_cast<int>(StatBase[IStartCol]);
  int maxCol = minCol + static_cast<int>(StatBase[INCol]) - 1;
  double r = 1;
 
  if (params[IVXX] <= 0 || params[IVYY] <= 0)
    return 1.0;
 
  //  NstdX iand NstdY are the number of 1/4 standard deviations. Elements of
  //  probs are in
  //    1/4 standard deviations
  double NstdX = 4 * min<double>(params[IXMEAN] - minCol, maxCol - params[IXMEAN]) / sqrt(params[IVXX]);
 
  double NstdY = 4 * min<double>(params[IYMEAN] - minRow, maxRow - params[IYMEAN]) / sqrt(params[IVYY]);
 
  double sgn = 1;
  if (NstdX < 0) {
    sgn = -1;
  }
  double P = 1;
  if (sgn * NstdX < 9) {
    auto xx = static_cast<int>(sgn * NstdX);
    double a = probs[xx];
    double b = 1;
    if (xx + 1 <= 8)
      b = probs[xx + 1];
    P = a + (b - a) * (sgn * NstdX - xx);
  }
  if (NstdX >= 7.5)
    r = 1.0;
  else if (sgn > 0)
    r = 1 / P;
  else
    r = 1 / (1 - P);
 
  if (NstdY < 0) {
    sgn = -1;
  }
  P = 1;
  if (sgn * NstdY < 9) {
    auto xx = static_cast<int>(sgn * NstdY);
    double a = probs[xx];
    double b = 1;
    if (xx + 1 <= 8)
      b = probs[xx + 1];
    P = a + (b - a) * (sgn * NstdY - xx);
  }
  if (NstdY >= 7.5)
    r *= 1.0;
  else if (sgn > 0)
    r *= 1 / P;
  else
    r *= 1 / (1 - P);
 
  r = std::max(r, 1.0);
  return r;
}
 
} // namespace Mantid::Crystal
// Attr indicies