MaxEnt : Entropy maximization algorithm following the approach described in the article by J. More...

#include <MaxEnt.h>

Inheritance diagram for Mantid::Algorithms::MaxEnt:

Public Member Functions
const std::string	category () const override
	Algorithm's category. More...

const std::string	name () const override
	Algorithm's name. More...

const std::vector< std::string >	seeAlso () const override
	Function to return all of the seeAlso algorithms related to this algorithm. More...

const std::string	summary () const override
	Algorithm's summary. More...

int	version () const override
	Algorithm's version. More...

virtual	~MaxEnt ()=default

Public Member Functions inherited from Mantid::API::Algorithm
	Algorithm ()
	Constructor. More...

	Algorithm (const Algorithm &)=delete

Algorithm &	operator= (const Algorithm &)=delete

	~Algorithm () override
	Virtual destructor. More...

void	initialize () override
	Initialization method invoked by the framework. More...

bool	execute () override final
	The actions to be performed by the algorithm on a dataset. More...

void	addTimer (const std::string &name, const Kernel::time_point_ns &begin, const Kernel::time_point_ns &end)

void	executeAsChildAlg () override
	Execute as a Child Algorithm. More...

std::map< std::string, std::string >	validateInputs () override
	Perform validation of ALL the input properties of the algorithm. More...

ExecutionState	executionState () const override
	Gets the current execution state. More...

ResultState	resultState () const override
	Gets the current result State. More...

bool	isInitialized () const override
	Has the Algorithm already been initialized. More...

bool	isExecuted () const override
	Has the Algorithm already been executed successfully. More...

bool	isRunning () const override
	True if the algorithm is running. More...

bool	isReadyForGarbageCollection () const override
	True if the algorithm is ready for garbage collection. More...

bool	isChild () const override
	To query whether algorithm is a child. More...

void	setChild (const bool isChild) override
	To set whether algorithm is a child. More...

void	enableHistoryRecordingForChild (const bool on) override
	Change the state of the history recording flag. More...

bool	isRecordingHistoryForChild ()

void	setAlwaysStoreInADS (const bool doStore) override
	Do we ALWAYS store in the AnalysisDataService? This is set to true for python algorithms' child algorithms. More...

bool	getAlwaysStoreInADS () const override
	Returns true if we always store in the AnalysisDataService. More...

void	setRethrows (const bool rethrow) override
	Set whether the algorithm will rethrow exceptions. More...

Poco::ActiveResult< bool >	executeAsync () override
	Asynchronous execution. More...

void	addObserver (const Poco::AbstractObserver &observer) const override
	Add an observer for a notification. More...

void	removeObserver (const Poco::AbstractObserver &observer) const override
	Remove an observer. More...

void	cancel () override
	Raises the cancel flag. More...

bool	getCancel () const
	Returns the cancellation state. More...

Kernel::Logger &	getLogger () const
	Returns a reference to the logger. More...

void	setLogging (const bool value) override
	Logging can be disabled by passing a value of false. More...

bool	isLogging () const override
	returns the status of logging, True = enabled More...

void	setLoggingOffset (const int value) override
	gets the logging priority offset More...

int	getLoggingOffset () const override
	returns the logging priority offset More...

void	setAlgStartupLogging (const bool enabled) override
	disable Logging of start and end messages More...

bool	getAlgStartupLogging () const override
	get the state of Logging of start and end messages More...

void	setChildStartProgress (const double startProgress) const override
	setting the child start progress More...

void	setChildEndProgress (const double endProgress) const override
	setting the child end progress More...

std::string	toString () const override
	Serialize an object to a string. More...

::Json::Value	toJson () const override
	Serialize an object to a json object. More...

virtual std::shared_ptr< Algorithm >	createChildAlgorithm (const std::string &name, const double startProgress=-1., const double endProgress=-1., const bool enableLogging=true, const int &version=-1)
	Create a Child Algorithm. More...

void	setupAsChildAlgorithm (const Algorithm_sptr &algorithm, const double startProgress=-1., const double endProgress=-1., const bool enableLogging=true)
	Setup algorithm as child algorithm. More...

void	trackAlgorithmHistory (std::shared_ptr< AlgorithmHistory > parentHist)
	set whether we wish to track the child algorithm's history and pass it the parent object to fill. More...

void	findWorkspaces (WorkspaceVector &workspaces, unsigned int direction, bool checkADS=false) const
	Populate lists of the workspace properties for a given direction (InOut workspaces are included in both input/output) More...

virtual bool	checkGroups ()
	Check the input workspace properties for groups. More...

virtual bool	processGroups ()
	Process WorkspaceGroup inputs. More...

void	copyNonWorkspaceProperties (IAlgorithm *alg, int periodNum)
	Copy all the non-workspace properties from this to alg. More...

const Parallel::Communicator &	communicator () const
	Returns a const reference to the (MPI) communicator of the algorithm. More...

void	setCommunicator (const Parallel::Communicator &communicator)
	Sets the (MPI) communicator of the algorithm. More...

void	declareProperty (std::unique_ptr< Kernel::Property > p, const std::string &doc="") override
	Add a property to the list of managed properties. More...

void	declareOrReplaceProperty (std::unique_ptr< Kernel::Property > p, const std::string &doc="") override
	Add or replace property in the list of managed properties. More...

void	resetProperties () override
	Reset property values back to initial values (blank or default values) More...

void	setProperties (const std::string &propertiesJson, const std::unordered_set< std::string > &ignoreProperties=std::unordered_set< std::string >(), bool createMissing=false) override
	Set the ordered list of properties by one string of values, separated by semicolons. More...

void	setProperties (const ::Json::Value &jsonValue, const std::unordered_set< std::string > &ignoreProperties=std::unordered_set< std::string >(), bool createMissing=false) override
	Sets all the declared properties from a json object. More...

void	setPropertiesWithString (const std::string &propertiesString, const std::unordered_set< std::string > &ignoreProperties=std::unordered_set< std::string >()) override
	Sets all the declared properties from a string. More...

void	setPropertyValue (const std::string &name, const std::string &value) override
	Set the value of a property by string N.B. More...

void	setPropertyValueFromJson (const std::string &name, const Json::Value &value) override
	Set the value of a property by Json::Value object. More...

void	setPropertyOrdinal (const int &index, const std::string &value) override
	Set the value of a property by an index N.B. More...

virtual void	copyPropertiesFrom (const Algorithm &alg)
	Make m_properties point to the same PropertyManager as alg.m_properties. More...

bool	existsProperty (const std::string &name) const override
	Checks whether the named property is already in the list of managed property. More...

bool	validateProperties () const override
	Validates all the properties in the collection. More...

size_t	propertyCount () const override
	Count the number of properties under management. More...

std::string	getPropertyValue (const std::string &name) const override
	Get the value of a property as a string. More...

const std::vector< Kernel::Property * > &	getProperties () const override
	Get the list of managed properties. More...

std::vector< std::string >	getDeclaredPropertyNames () const noexcept override
	Return the list of declared property names. More...

TypedValue	getProperty (const std::string &name) const override
	Get the value of a property. More...

std::string	asString (bool withDefaultValues=false) const override
	Return the property manager serialized as a string. More...

::Json::Value	asJson (bool withDefaultValues=false) const override
	Return the property manager serialized as a json object. More...

bool	isDefault (const std::string &name) const

void	removeProperty (const std::string &name, const bool delproperty=true) override
	Removes the property from management. More...

std::unique_ptr< Kernel::Property >	takeProperty (const size_t index) override
	Removes the property from management and returns a pointer to it. More...

void	clear () override
	Clears all properties under management. More...

void	afterPropertySet (const std::string &) override
	Override this method to perform a custom action right after a property was set. More...

void	filterByTime (const Types::Core::DateAndTime &, const Types::Core::DateAndTime &) override

void	splitByTime (std::vector< Kernel::SplittingInterval > &, std::vector< Kernel::PropertyManager * >) const override

void	filterByProperty (const Kernel::TimeSeriesProperty< bool > &, const std::vector< std::string > &) override

Kernel::Property *	getPointerToProperty (const std::string &name) const override
	Get a property by name. More...

Kernel::Property *	getPointerToPropertyOrdinal (const int &index) const override
	Get a property by an index. More...

virtual void	declareProperty (std::unique_ptr< Property > p, const std::string &doc="")=0
	Function to declare properties (i.e. store them) More...

template<typename T >
void	declareProperty (const std::string &name, T value, IValidator_sptr validator=std::make_shared< NullValidator >(), const std::string &doc="", const unsigned int direction=Direction::Input)
	Add a property of the template type to the list of managed properties. More...

template<typename T >
void	declareProperty (const std::string &name, T value, const std::string &doc, const unsigned int direction=Direction::Input)
	Add a property to the list of managed properties with no validator. More...

template<typename T >
void	declareProperty (const std::string &name, T value, const unsigned int direction)
	Add a property of the template type to the list of managed properties. More...

void	declareProperty (const std::string &name, const char *value, IValidator_sptr validator=std::make_shared< NullValidator >(), const std::string &doc=std::string(), const unsigned int direction=Direction::Input)
	Specialised version of declareProperty template method to prevent the creation of a PropertyWithValue of type const char* if an argument in quotes is passed (it will be converted to a string). More...

void	declareProperty (const std::string &name, const char *value, const std::string &doc, IValidator_sptr validator=std::make_shared< NullValidator >(), const unsigned int direction=Direction::Input)
	Specialised version of declareProperty template method to prevent the creation of a PropertyWithValue of type const char* if an argument in quotes is passed (it will be converted to a string). More...

void	declareProperty (const std::string &name, const char *value, const unsigned int direction)
	Add a property of string type to the list of managed properties. More...

const std::string	category () const override
	function to return a category of the algorithm. More...

const std::vector< std::string >	categories () const override
	Function to return all of the categories that contain this algorithm. More...

const std::string	categorySeparator () const override
	Function to return the separator token for the category string. More...

const std::vector< std::string >	seeAlso () const override
	Function to return all of the seeAlso (these are not validated) algorithms related to this algorithm.A default implementation is provided. More...

const std::string	alias () const override
	function to return any aliases to the algorithm; A default implementation is provided More...

const std::string	aliasDeprecated () const override
	Expiration date (in ISO8601 format) for the algorithm aliases; default implementation for no expiration date. More...

const std::string	helpURL () const override
	function to return URL for algorithm documentation; A default implementation is provided. More...

template<typename T , typename = typename std::enable_if<std::is_convertible<T , MatrixWorkspace >::value>::type>
std::tuple< std::shared_ptr< T >, Indexing::SpectrumIndexSet >	getWorkspaceAndIndices (const std::string &name) const

template<typename T1 , typename T2 , typename = typename std::enable_if<std::is_convertible<T1 , MatrixWorkspace >::value>::type, typename = typename std::enable_if<std::is_convertible<T2 , std::string >::value \|\| std::is_convertible<T2 , std::vector<int64_t> >::value>::type>
void	setWorkspaceInputProperties (const std::string &name, const std::shared_ptr< T1 > &wksp, IndexType type, const T2 &list)

template<typename T1 , typename T2 , typename = typename std::enable_if<std::is_convertible<T1 , MatrixWorkspace >::value>::type, typename = typename std::enable_if<std::is_convertible<T2 , std::string >::value \|\| std::is_convertible<T2 , std::vector<int64_t> >::value>::type>
void	setWorkspaceInputProperties (const std::string &name, const std::string &wsName, IndexType type, const T2 &list)

const std::string	workspaceMethodName () const override

const std::vector< std::string >	workspaceMethodOn () const override

const std::string	workspaceMethodInputProperty () const override

AlgorithmID	getAlgorithmID () const override
	Algorithm ID. More...

virtual void	addObserver (const Poco::AbstractObserver &observer) const =0
	Add an observer for a notification. More...

virtual const std::string	alias () const =0
	function to return any aliases of the algorithm. More...

virtual const std::string	aliasDeprecated () const =0
	Expiration date (in ISO8601 format) for the algorithm aliases. Empty if no expiration date. More...

virtual void	cancel ()=0
	Raises the cancel flag. More...

virtual const std::vector< std::string >	categories () const =0
	Function to return all of the categories that contain this algorithm. More...

virtual const std::string	category () const =0
	function to return a category of the algorithm. More...

virtual const std::string	categorySeparator () const =0
	Function to return the separator token for the category string. More...

virtual void	enableHistoryRecordingForChild (const bool on)=0
	If true history will be recorded for a child. More...

virtual bool	execute ()=0
	System execution. More...

virtual void	executeAsChildAlg ()=0
	Execute as a Child Algorithm, with try/catch. More...

virtual Poco::ActiveResult< bool >	executeAsync ()=0
	Asynchronous execution of the algorithm. More...

virtual ExecutionState	executionState () const =0
	Gets the current execution state. More...

virtual AlgorithmID	getAlgorithmID () const =0
	Algorithm ID. More...

virtual bool	getAlgStartupLogging () const =0
	get the state of Logging of start and end messages More...

virtual bool	getAlwaysStoreInADS () const =0
	To query whether the output is stored in the analysis data service. More...

virtual int	getLoggingOffset () const =0
	returns the logging priority offset More...

virtual const std::string	helpURL () const =0
	function to return an optional URL for documentation. More...

virtual void	initialize ()=0
	Initialization method invoked by the framework. More...

virtual bool	isChild () const =0
	To query whether algorithm is a child. Default to false. More...

virtual bool	isExecuted () const =0
	Check whether the algorithm has been executed sucessfully. More...

virtual bool	isInitialized () const =0
	Check whether the algorithm is initialized properly. More...

virtual bool	isLogging () const =0
	returns the status of logging, True = enabled More...

virtual bool	isReadyForGarbageCollection () const =0
	True if the algorithm is ready for garbage collection. More...

virtual bool	isRunning () const =0
	True if the algorithm is running. More...

virtual const std::string	name () const =0
	function to return a name of the algorithm, must be overridden in all algorithms More...

virtual void	removeObserver (const Poco::AbstractObserver &observer) const =0
	Remove an observer. More...

virtual ResultState	resultState () const =0
	Gets the currnet result State. More...

virtual const std::vector< std::string >	seeAlso () const =0
	Function to return all of the seeAlso algorithms related to this algorithm. More...

virtual void	setAlgStartupLogging (const bool enabled)=0
	disable Logging of start and end messages More...

virtual void	setAlwaysStoreInADS (const bool doStore)=0
	Set whether we always store the output in the analysis data service. More...

virtual void	setChild (const bool isChild)=0
	To set whether algorithm is a child. More...

virtual void	setChildEndProgress (const double endProgress) const =0
	setting the child end progress More...

virtual void	setChildStartProgress (const double startProgress) const =0
	setting the child start progress More...

virtual void	setLogging (const bool value)=0
	Logging can be disabled by passing a value of false. More...

virtual void	setLoggingOffset (const int value)=0
	gets the logging priority offset More...

virtual void	setRethrows (const bool rethrow)=0
	To query whether an algorithm should rethrow exceptions when executing. More...

virtual const std::string	summary () const =0
	function returns a summary message that will be displayed in the default GUI, and in the help. More...

virtual ::Json::Value	toJson () const =0
	Serialize an algorithm as Json. More...

virtual std::string	toString () const =0
	Serialize an algorithm. More...

virtual std::map< std::string, std::string >	validateInputs ()=0
	Method checking errors on ALL the inputs, before execution. More...

virtual int	version () const =0
	function to return a version of the algorithm, must be overridden in all algorithms More...

Algorithms As Methods
Public Member Functions inherited from Mantid::Kernel::IPropertyManager
virtual ::Json::Value	asJson (bool withDefaultValues=false) const =0
	Return the property manager serialized as a json object. More...

virtual std::string	asString (bool withDefaultValues=false) const =0
	Return the property manager serialized as a string. More...

virtual void	declareOrReplaceProperty (std::unique_ptr< Property > p, const std::string &doc="")=0
	Function to declare properties (i.e. store them) More...

void	declareProperty (const std::string &name, const char *value, const std::string &doc, IValidator_sptr validator=std::make_shared< NullValidator >(), const unsigned int direction=Direction::Input)
	Specialised version of declareProperty template method to prevent the creation of a PropertyWithValue of type const char* if an argument in quotes is passed (it will be converted to a string). More...

void	declareProperty (const std::string &name, const char *value, const unsigned int direction)
	Add a property of string type to the list of managed properties. More...

void	declareProperty (const std::string &name, const char *value, IValidator_sptr validator=std::make_shared< NullValidator >(), const std::string &doc=std::string(), const unsigned int direction=Direction::Input)
	Specialised version of declareProperty template method to prevent the creation of a PropertyWithValue of type const char* if an argument in quotes is passed (it will be converted to a string). More...

template<typename T >
void	declareProperty (const std::string &name, T value, const std::string &doc, const unsigned int direction=Direction::Input)
	Add a property to the list of managed properties with no validator. More...

template<typename T >
void	declareProperty (const std::string &name, T value, const unsigned int direction)
	Add a property of the template type to the list of managed properties. More...

template<typename T >
void	declareProperty (const std::string &name, T value, IValidator_sptr validator=std::make_shared< NullValidator >(), const std::string &doc="", const unsigned int direction=Direction::Input)
	Add a property of the template type to the list of managed properties. More...

virtual void	declareProperty (std::unique_ptr< Property > p, const std::string &doc="")=0
	Function to declare properties (i.e. store them) More...

virtual bool	existsProperty (const std::string &name) const =0
	Checks whether the named property is already in the list of managed property. More...

virtual void	filterByProperty (const TimeSeriesProperty< bool > &, const std::vector< std::string > &)=0

virtual void	filterByTime (const Types::Core::DateAndTime &, const Types::Core::DateAndTime &)=0

virtual std::vector< std::string >	getDeclaredPropertyNames () const noexcept=0
	Get the list of managed property names. More...

virtual Property *	getPointerToProperty (const std::string &name) const =0
	Get a pointer to property by name. More...

virtual const std::vector< Property * > &	getProperties () const =0
	Get the list of managed properties. More...

std::vector< Property * >	getPropertiesInGroup (const std::string &group) const
	Get the list of managed properties in a given group. More...

virtual TypedValue	getProperty (const std::string &name) const =0
	Get the value of a property. More...

virtual std::string	getPropertyValue (const std::string &name) const =0
	Get the value of a property as a string. More...

virtual size_t	propertyCount () const =0
	Returns the number of properties under management. More...

virtual void	removeProperty (const std::string &name, const bool delproperty=true)=0
	Removes the property from management. More...

virtual void	resetProperties ()=0

virtual void	setProperties (const ::Json::Value &jsonValue, const std::unordered_set< std::string > &ignoreProperties=std::unordered_set< std::string >(), bool createMissing=false)=0
	Sets all the properties from a json object. More...

virtual void	setProperties (const std::string &propertiesJson, const std::unordered_set< std::string > &ignoreProperties=std::unordered_set< std::string >(), bool createMissing=false)=0
	Sets all properties from a string. More...

virtual void	setPropertiesWithString (const std::string &propertiesString, const std::unordered_set< std::string > &ignoreProperties=std::unordered_set< std::string >())=0
	Sets all the declared properties from a string. More...

IPropertyManager *	setProperty (const std::string &name, const char *value)
	Specialised version of setProperty template method to handle const char *. More...

IPropertyManager *	setProperty (const std::string &name, const std::string &value)
	Specialised version of setProperty template method to handle std::string. More...

template<typename T >
IPropertyManager *	setProperty (const std::string &name, const T &value)
	Templated method to set the value of a PropertyWithValue. More...

template<typename T >
IPropertyManager *	setProperty (const std::string &name, std::unique_ptr< T > value)
	Templated method to set the value of a PropertyWithValue from a std::unique_ptr. More...

void	setPropertyGroup (const std::string &name, const std::string &group)
	Set the group for a given property. More...

virtual void	setPropertyOrdinal (const int &index, const std::string &value)=0
	Set the value of a property by an index. More...

void	setPropertySettings (const std::string &name, std::unique_ptr< IPropertySettings > settings)

virtual void	setPropertyValue (const std::string &name, const std::string &value)=0
	Sets property value from a string. More...

virtual void	setPropertyValueFromJson (const std::string &name, const Json::Value &value)=0
	Sets property value from a Json::Value. More...

virtual void	splitByTime (std::vector< SplittingInterval > &, std::vector< PropertyManager * >) const =0

virtual std::unique_ptr< Property >	takeProperty (const size_t index)=0
	Removes the property from management and returns a pointer to it. More...

void	updatePropertyValues (const IPropertyManager &other)
	Update values of the existing properties. More...

virtual bool	validateProperties () const =0
	Validates all the properties in the collection. More...

virtual	~IPropertyManager ()=default

Protected Member Functions
std::map< std::string, std::string >	validateInputs () override
	Validate the input properties. More...

Protected Member Functions inherited from Mantid::API::Algorithm
void	exec (Parallel::ExecutionMode executionMode)
	Runs the algorithm with the specified execution mode. More...

virtual void	execDistributed ()
	Runs the algorithm in `distributed` execution mode. More...

virtual void	execMasterOnly ()
	Runs the algorithm in `master-only` execution mode. More...

virtual Parallel::ExecutionMode	getParallelExecutionMode (const std::map< std::string, Parallel::StorageMode > &storageModes) const
	Get correct execution mode based on input storage modes for an MPI run. More...

virtual const std::string	workspaceMethodOnTypes () const
	Returns a semi-colon separated list of workspace types to attach this algorithm. More...

void	cacheWorkspaceProperties ()
	Go through the properties and cache the input/output workspace properties for later use. More...

void	cacheInputWorkspaceHistories ()
	Cache the histories of any input workspaces so they can be copied over after algorithm completion. More...

void	setExecutionState (const ExecutionState state)
	Sets the current execution state. More...

void	setResultState (const ResultState state)
	Sets the result execution state. More...

void	store ()
	Stores any output workspaces into the AnalysisDataService. More...

void	progress (double p, const std::string &msg="", double estimatedTime=0.0, int progressPrecision=0)
	Sends ProgressNotification. More...

void	interruption_point ()
	This is called during long-running operations, and check if the algorithm has requested that it be cancelled. More...

Poco::NotificationCenter &	notificationCenter () const
	Return a reference to the algorithm's notification dispatcher. More...

void	handleChildProgressNotification (const Poco::AutoPtr< ProgressNotification > &pNf)
	Observation slot for child algorithm progress notification messages, these are scaled and then signalled for this algorithm. More...

const Poco::AbstractObserver &	progressObserver () const
	Return a reference to the algorithm's object that is reporting progress. More...

bool	isWorkspaceProperty (const Kernel::Property *const prop) const
	checks the property is a workspace property More...

bool	trackingHistory ()
	get whether we are tracking the history for this algorithm, More...

virtual void	fillHistory ()
	Copy workspace history for input workspaces to output workspaces and record the history for ths algorithm. More...

virtual void	setOtherProperties (IAlgorithm *alg, const std::string &propertyName, const std::string &propertyValue, int periodNum)
	Virtual method to set the non workspace properties for this algorithm. More...

template<typename T , const int AllowedIndexTypes = static_cast<int>(IndexType::WorkspaceIndex), typename... WSPropArgs, typename = typename std::enable_if<std::is_convertible<T , MatrixWorkspace >::value>::type>
void	declareWorkspaceInputProperties (const std::string &propertyName, const std::string &doc, WSPropArgs &&...wsPropArgs)

Protected Member Functions inherited from Mantid::Kernel::IPropertyManager
virtual void	afterPropertySet (const std::string &)
	Override this method to perform a custom action right after a property was set. More...

virtual void	clear ()=0
	Clears all properties under management. More...

virtual Property *	getPointerToPropertyOrdinal (const int &index) const =0
	Get a property by an index. More...

template<typename T >
T	getValue (const std::string &name) const
	Templated method to get the value of a property. More...

template<>
MANTID_KERNEL_DLL PropertyManager_sptr	getValue (const std::string &name) const

template<>
MANTID_KERNEL_DLL PropertyManager_const_sptr	getValue (const std::string &name) const

Private Member Functions
std::vector< double >	applyDistancePenalty (const std::vector< double > &beta, const QuadraticCoefficients &coeffs, const std::vector< double > &image, double background, double distEps)
	Applies a distance penalty. More...

double	calculateChi (const QuadraticCoefficients &coeffs, double a, std::vector< double > &beta)
	Calculates Chi given the quadratic coefficients and an alpha value by solving the matrix equation A*b = B. More...

void	exec () override
	Run the algorithm. More...

void	init () override
	Initialise the algorithm's properties. More...

std::vector< double >	move (const QuadraticCoefficients &coeffs, double ChiTargetOverN, double chiEps, size_t alphaIter)
	Moves the system one step closer towards the solution. More...

void	populateDataWS (API::MatrixWorkspace_const_sptr &inWS, size_t spec, size_t nspec, const std::vector< double > &result, bool concatenatedSpectra, bool complex, API::MatrixWorkspace_sptr &outWS)
	Populates the output workspace containing the reconstructed data. More...

void	populateImageWS (API::MatrixWorkspace_const_sptr &inWS, size_t spec, size_t nspec, const std::vector< double > &result, bool complex, API::MatrixWorkspace_sptr &outWS, bool autoShift)
	Populates the output workspace containing the reconstructed image. More...

std::vector< double >	solveSVD (Kernel::DblMatrix &A, const Kernel::DblMatrix &B)
	Solves A*x = B using SVD. More...

std::vector< double >	toComplex (API::MatrixWorkspace_const_sptr &inWS, size_t spec, bool errors, bool concatenatedSpectra)
	Returns spectrum 'spec' as a complex vector. More...

std::vector< double >	updateImage (const std::vector< double > &image, const std::vector< double > &delta, const std::vector< std::vector< double > > &dirs)
	Updates the image. More...

void	validateBinEdges (const std::string &wsName, std::map< std::string, std::string > &messages)
	Checks the bin spacing is equal. More...

Additional Inherited Members
Public Types inherited from Mantid::API::Algorithm
using	WorkspaceVector = std::vector< std::shared_ptr< Workspace > >

Static Public Member Functions inherited from Mantid::API::Algorithm
static IAlgorithm_sptr	fromString (const std::string &input)
	De-serialize an object from a string. More...

static IAlgorithm_sptr	fromJson (const Json::Value &input)
	De-serialize an object from a Json. More...

static IAlgorithm_sptr	fromHistory (const AlgorithmHistory &history)
	Construct an object from a history entry. More...

Public Attributes inherited from Mantid::API::Algorithm
bool	calledByAlias = false
	Flag to indicate if the algorithm is called by its alias. More...

Static Protected Member Functions inherited from Mantid::API::Algorithm
template<typename NumT >
static bool	isEmpty (const NumT toCheck)
	checks that the value was not set by users, uses the value in empty double/int. More...

Protected Attributes inherited from Mantid::API::Algorithm
std::atomic< bool >	m_cancel
	Set to true to stop execution. More...

std::atomic< bool >	m_parallelException
	Set if an exception is thrown, and not caught, within a parallel region. More...

std::vector< IWorkspaceProperty * >	m_inputWorkspaceProps
	All the WorkspaceProperties that are Input or InOut. Set in execute() More...

std::shared_ptr< AlgorithmHistory >	m_history
	Pointer to the history for the algorithm being executed. More...

Kernel::Logger	m_log
	Logger for this algorithm. More...

Kernel::Logger &	g_log

std::shared_ptr< AlgorithmHistory >	m_parentHistory
	Pointer to the parent history object (if set) More...

std::vector< WorkspaceVector >	m_unrolledInputWorkspaces
	One vector of workspaces for each input workspace property. More...

size_t	m_groupSize
	Size of the group(s) being processed. More...

bool	m_usingBaseProcessGroups = false
	distinguish between base processGroups() and overriden/algorithm specific versions More...

Static Protected Attributes inherited from Mantid::API::Algorithm
static size_t	g_execCount = 0
	Counter to keep track of algorithm execution order. More...

Detailed Description

MaxEnt : Entropy maximization algorithm following the approach described in the article by J.

Skilling and R. K. Bryan: "Maximum entropy image reconstruction: general algorithm", Mon. Not. R. astr. Soc. (1984) 211, 111-124

Definition at line 24 of file MaxEnt.h.

Constructor & Destructor Documentation

◆ ~MaxEnt()

virtual Mantid::Algorithms::MaxEnt::~MaxEnt ( )

virtualdefault

Member Function Documentation

◆ applyDistancePenalty()

std::vector< double > Mantid::Algorithms::MaxEnt::applyDistancePenalty	(	const std::vector< double > &	delta,
		const QuadraticCoefficients &	coeffs,
		const std::vector< double > &	image,
		double	background,
		double	distEps
	)

private

Applies a distance penalty.

Parameters

delta	:: [input] The current increment
coeffs	:: [input] The quadratic coefficients
image	:: [input] The current image
background	:: [input] The background
distEps	:: [input] The distance constraint

Returns: :: The new increment

Definition at line 763 of file MaxEnt.cpp.

References Mantid::Kernel::delta, QuadraticCoefficients::s2, and Mantid::Kernel::Matrix< T >::size().

Referenced by exec().

◆ calculateChi()

double Mantid::Algorithms::MaxEnt::calculateChi	(	const QuadraticCoefficients &	coeffs,
		double	a,
		std::vector< double > &	b
	)

private

Calculates Chi given the quadratic coefficients and an alpha value by solving the matrix equation A*b = B.

Parameters

coeffs	:: [input] The quadratic coefficients
a	:: [input] The alpha value
b	:: [output] The solution

Returns: :: The calculated chi-square

Definition at line 676 of file MaxEnt.cpp.

References QuadraticCoefficients::c1, QuadraticCoefficients::c2, QuadraticCoefficients::s1, QuadraticCoefficients::s2, Mantid::Kernel::Matrix< T >::size(), solveSVD(), and Mantid::Geometry::z.

Referenced by move().

◆ category()

const std::string Mantid::Algorithms::MaxEnt::category ( ) const

overridevirtual

Algorithm's category.

Algorithm's category for identification.

See also: Algorithm::category

Implements Mantid::API::IAlgorithm.

Definition at line 108 of file MaxEnt.cpp.

◆ exec()

void Mantid::Algorithms::MaxEnt::exec ( )

overrideprivatevirtual

Run the algorithm.

Execute the algorithm.

Implements Mantid::API::Algorithm.

Definition at line 318 of file MaxEnt.cpp.

References applyDistancePenalty(), Mantid::Kernel::delta, error, Mantid::API::Algorithm::g_log, Mantid::Algorithms::MaxentCalculator::getAngle(), Mantid::Algorithms::MaxentCalculator::getChisq(), Mantid::Algorithms::MaxentCalculator::getImage(), Mantid::API::Algorithm::getProperty(), Mantid::Algorithms::MaxentCalculator::getQuadraticCoefficients(), Mantid::Algorithms::MaxentCalculator::getReconstructedData(), Mantid::Algorithms::MaxentCalculator::getSearchDirections(), Mantid::Kernel::Logger::information(), Mantid::API::Algorithm::interruption_point(), Mantid::Algorithms::MaxentCalculator::iterate(), move(), populateDataWS(), populateImageWS(), Mantid::API::Algorithm::progress(), Mantid::Kernel::IPropertyManager::setProperty(), toComplex(), and updateImage().

◆ init()

void Mantid::Algorithms::MaxEnt::init ( )

overrideprivatevirtual

Initialise the algorithm's properties.

Initialize the algorithm's properties.

Implements Mantid::API::Algorithm.

Definition at line 120 of file MaxEnt.cpp.

References Mantid::API::Algorithm::declareProperty(), Mantid::Kernel::Direction::Input, Mantid::API::PropertyMode::Optional, and Mantid::Kernel::Direction::Output.

◆ move()

std::vector< double > Mantid::Algorithms::MaxEnt::move	(	const QuadraticCoefficients &	coeffs,
		double	ChiTargetOverN,
		double	chiEps,
		size_t	alphaIter
	)

private

Moves the system one step closer towards the solution.

Bisection method to move delta one step closer towards the solution.

Parameters

coeffs	:: [input] The current quadratic coefficients
ChiTargetOverN	:: [input] The requested Chi target over N (data points)
chiEps	:: [input] Precision required for Chi target
alphaIter	:: [input] Maximum number of iterations in the bisection method (alpha chop)

Returns: : The increment length to be added to the current image

Definition at line 603 of file MaxEnt.cpp.

References QuadraticCoefficients::c2, calculateChi(), Mantid::Kernel::delta, fabs, and Mantid::Kernel::Matrix< T >::size().

Referenced by exec().

◆ name()

const std::string Mantid::Algorithms::MaxEnt::name ( ) const

overridevirtual

Algorithm's name.

Algorithm's name for identification.

See also: Algorithm::name

Implements Mantid::API::Algorithm.

Definition at line 102 of file MaxEnt.cpp.

◆ populateDataWS()

void Mantid::Algorithms::MaxEnt::populateDataWS	(	API::MatrixWorkspace_const_sptr &	inWS,
		size_t	spec,
		size_t	nspec,
		const std::vector< double > &	result,
		bool	concatenated,
		bool	complex,
		API::MatrixWorkspace_sptr &	outWS
	)

private

Populates the output workspace containing the reconstructed data.

Populates the data output workspace.

Parameters

inWS	:: [input] The input workspace
spec	:: [input] The current spectrum being analyzed
nspec	:: [input] The total number of histograms in the input workspace
result	:: [input] The reconstructed data to be written in the output workspace (can be a real or complex vector)
complex	:: [input] True if result is a complex vector, false otherwise
concatenated	:: [input] True if result is concatenated spectra, then all spectra are analyzed and spec must be 0.
outWS	:: [input] The output workspace to populate

Definition at line 913 of file MaxEnt.cpp.

References Mantid::Geometry::X.

Referenced by exec().

◆ populateImageWS()

void Mantid::Algorithms::MaxEnt::populateImageWS	(	API::MatrixWorkspace_const_sptr &	inWS,
		size_t	spec,
		size_t	nspec,
		const std::vector< double > &	result,
		bool	complex,
		API::MatrixWorkspace_sptr &	outWS,
		bool	autoShift
	)

private

Populates the output workspace containing the reconstructed image.

Populates the image output workspace.

Parameters

inWS	:: [input] The input workspace
spec	:: [input] The current spectrum being analyzed
nspec	:: [input] The total number of histograms in the input workspace
result	:: [input] The image to be written in the output workspace (can be real or complex vector)
complex	:: [input] True if the result is a complex vector, false otherwise
outWS	:: [input] The output workspace to populate
autoShift	:: [input] Whether or not to correct the phase shift

Definition at line 827 of file MaxEnt.cpp.

References Mantid::DataObjects::create(), Mantid::Kernel::delta, Mantid::Kernel::SingletonHolder< T >::Instance(), and Mantid::Geometry::X.

Referenced by exec().

◆ seeAlso()

const std::vector< std::string > Mantid::Algorithms::MaxEnt::seeAlso ( ) const

inlineoverridevirtual

Function to return all of the seeAlso algorithms related to this algorithm.

Implements Mantid::API::IAlgorithm.

Definition at line 31 of file MaxEnt.h.

◆ solveSVD()

std::vector< double > Mantid::Algorithms::MaxEnt::solveSVD	(	Kernel::DblMatrix &	A,
		const Kernel::DblMatrix &	B
	)

private

Solves A*x = B using SVD.

Parameters

A	:: [input] The matrix A
B	:: [input] The vector B

Returns: :: The solution x

Definition at line 721 of file MaxEnt.cpp.

References Mantid::Kernel::delta, Mantid::Kernel::Matrix< T >::size(), and Mantid::Geometry::x.

Referenced by calculateChi().

◆ summary()

const std::string Mantid::Algorithms::MaxEnt::summary ( ) const

overridevirtual

Algorithm's summary.

Algorithm's summary for use in the GUI and help.

See also: Algorithm::summary

Implements Mantid::API::Algorithm.

Definition at line 111 of file MaxEnt.cpp.

◆ toComplex()

std::vector< double > Mantid::Algorithms::MaxEnt::toComplex	(	API::MatrixWorkspace_const_sptr &	inWS,
		size_t	spec,
		bool	errors,
		bool	concatSpec
	)

private

Returns spectrum 'spec' as a complex vector.

Returns a given spectrum or sum of spectra as a complex number.

Parameters

inWS	:: [input] The input workspace containing all the spectra
spec	:: [input] The spectrum of interest
errors	:: [input] If true, returns the errors, otherwise returns the counts
concatSpec	:: [input] If true, use concatenation of all spectra (ignoring spec)

Returns: : Spectrum 'spec' as a complex vector

Definition at line 564 of file MaxEnt.cpp.

Referenced by exec().

◆ updateImage()

std::vector< double > Mantid::Algorithms::MaxEnt::updateImage	(	const std::vector< double > &	image,
		const std::vector< double > &	delta,
		const std::vector< std::vector< double > > &	dirs
	)

private

Updates the image.

Updates the image according to an increment delta.

Parameters

image	: [input] The current image as a vector (can be real or complex)
delta	: [input] The increment delta as a vector (can be real or complex)
dirs	: [input] The search directions

Returns: : The new image

Definition at line 798 of file MaxEnt.cpp.

References Mantid::Kernel::delta.

Referenced by exec().

◆ validateBinEdges()

void Mantid::Algorithms::MaxEnt::validateBinEdges	(	const std::string &	wsName,
		std::map< std::string, std::string > &	messages
	)

private

Checks the bin spacing is equal.

Revisit bin edge validation to write errors/warnings to the log.

Definition at line 243 of file MaxEnt.cpp.

References Mantid::API::Algorithm::getProperty(), and Mantid::Kernel::EqualBinsChecker::validate().

Referenced by validateInputs().

◆ validateInputs()

std::map< std::string, std::string > Mantid::Algorithms::MaxEnt::validateInputs ( void )

overrideprotectedvirtual

Validate the input properties.

Implements Mantid::API::IAlgorithm.

Definition at line 259 of file MaxEnt.cpp.

References Mantid::API::Algorithm::getProperty(), and validateBinEdges().

◆ version()

int Mantid::Algorithms::MaxEnt::version ( ) const

overridevirtual

Algorithm's version.

Algorithm's version for identification.

See also: Algorithm::version

Implements Mantid::API::Algorithm.

Definition at line 105 of file MaxEnt.cpp.

The documentation for this class was generated from the following files:

Framework/Algorithms/inc/MantidAlgorithms/MaxEnt.h
Framework/Algorithms/src/MaxEnt.cpp

Public Member Functions

Protected Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~MaxEnt()

Member Function Documentation

◆ applyDistancePenalty()

◆ calculateChi()

◆ category()

◆ exec()

◆ init()

◆ move()

◆ name()

◆ populateDataWS()

◆ populateImageWS()

◆ seeAlso()

◆ solveSVD()

◆ summary()

◆ toComplex()

◆ updateImage()

◆ validateBinEdges()

◆ validateInputs()

◆ version()