Regroup.h

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2008 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 +
#pragma once
 
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidAPI/Algorithm.h"
#include "MantidAPI/Workspace_fwd.h"
#include "MantidAlgorithms/DllConfig.h"
 
#include <span>
 
namespace Mantid {
namespace HistogramData {
class HistogramX;
class HistogramY;
class HistogramE;
} // namespace HistogramData
namespace Algorithms {
class MANTID_ALGORITHMS_DLL Regroup final : public API::Algorithm {
public:
  const std::string name() const override { return "Regroup"; }
  const std::string summary() const override { return "Regroups data with new bin boundaries."; }
 
  int version() const override { return 1; }
  const std::vector<std::string> seeAlso() const override { return {"Rebin"}; }
  const std::string category() const override { return "Transforms\\Rebin"; }
 
  int newAxis(const std::vector<double> &params, std::span<double const> xold, std::vector<double> &xnew,
              std::vector<int> &xoldIndex);
 
private:
  // Overridden Algorithm methods
  void init() override;
  void exec() override;
 
  void rebin(const HistogramData::HistogramX &xold, const HistogramData::HistogramY &yold,
             const HistogramData::HistogramE &eold, const std::vector<int> &xoldIndex, HistogramData::HistogramY &ynew,
             HistogramData::HistogramE &enew, bool distribution);
};
 
} // namespace Algorithms
} // namespace Mantid