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DataComparison.cpp
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DataComparison.cpp
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//----------------------
// Includes
//----------------------
#include "MantidQtCustomInterfaces/DataComparison.h"
#include "MantidAPI/AlgorithmManager.h"
#include "MantidQtAPI/QwtWorkspaceSpectrumData.h"
namespace
{
Mantid::Kernel::Logger g_log("DataComparison");
}
//Add this class to the list of specialised dialogs in this namespace
namespace MantidQt
{
namespace CustomInterfaces
{
DECLARE_SUBWINDOW(DataComparison);
}
}
using namespace MantidQt::CustomInterfaces;
using namespace Mantid::API;
//----------------------
// Public member functions
//----------------------
///Constructor
DataComparison::DataComparison(QWidget *parent) :
UserSubWindow(parent),
WorkspaceObserver(),
m_plot(new QwtPlot(parent)),
m_diffWorkspaceNames(qMakePair(QString(), QString()))
{
observeAfterReplace();
observeRename();
observePreDelete();
}
/// Set up the dialog layout
void DataComparison::initLayout()
{
m_uiForm.setupUi(this);
m_zoomTool = new QwtPlotZoomer(QwtPlot::xBottom, QwtPlot::yLeft,
QwtPicker::DragSelection | QwtPicker::CornerToCorner, QwtPicker::AlwaysOff, m_plot->canvas());
m_zoomTool->setEnabled(false);
m_panTool = new QwtPlotPanner(m_plot->canvas());
m_panTool->setEnabled(false);
m_magnifyTool = new QwtPlotMagnifier(m_plot->canvas());
m_magnifyTool->setEnabled(false);
// Add the plot to the UI
m_plot->setCanvasBackground(Qt::white);
m_uiForm.loPlot->addWidget(m_plot);
// Connect push buttons
connect(m_uiForm.pbAddData, SIGNAL(clicked()), this, SLOT(addData()));
connect(m_uiForm.pbRemoveSelectedData, SIGNAL(clicked()), this, SLOT(removeSelectedData()));
connect(m_uiForm.pbRemoveAllData, SIGNAL(clicked()), this, SLOT(removeAllData()));
connect(m_uiForm.pbDiffSelected, SIGNAL(clicked()), this, SLOT(diffSelected()));
connect(m_uiForm.pbClearDiff, SIGNAL(clicked()), this, SLOT(clearDiff()));
connect(m_uiForm.pbPan, SIGNAL(toggled(bool)), this, SLOT(togglePan(bool)));
connect(m_uiForm.pbZoom, SIGNAL(toggled(bool)), this, SLOT(toggleZoom(bool)));
connect(m_uiForm.pbResetView, SIGNAL(clicked()), this, SLOT(resetView()));
// Replot spectra when the spectrum index is changed
connect(m_uiForm.sbSpectrum, SIGNAL(valueChanged(int)), this, SLOT(spectrumIndexChanged()));
// Add headers to data table
QStringList headerLabels;
headerLabels << "Colour" << "Workspace" << "Offset" << "Spec.";
m_uiForm.twCurrentData->setColumnCount(headerLabels.size());
m_uiForm.twCurrentData->setHorizontalHeaderLabels(headerLabels);
// Select entire rows when a cell is selected
m_uiForm.twCurrentData->setSelectionBehavior(QAbstractItemView::SelectRows);
// Fit columns
m_uiForm.twCurrentData->resizeColumnsToContents();
}
/**
* Adds the data currently selected by the data selector to the plot.
*/
void DataComparison::addData()
{
QString dataName = m_uiForm.dsData->getCurrentDataName();
// Do nothing if the data is not found
if(!AnalysisDataService::Instance().doesExist(dataName.toStdString()))
return;
m_uiForm.twCurrentData->blockSignals(true);
// Append a new row to the data table
int currentRows = m_uiForm.twCurrentData->rowCount();
m_uiForm.twCurrentData->insertRow(currentRows);
// Insert the colour selector
QComboBox *colourCombo = new QComboBox();
// Add colours
colourCombo->addItem("Black", QVariant(Qt::black));
colourCombo->addItem("Red", QVariant(Qt::red));
colourCombo->addItem("Green", QVariant(Qt::green));
colourCombo->addItem("Blue", QVariant(Qt::blue));
colourCombo->addItem("Cyan", QVariant(Qt::cyan));
colourCombo->addItem("Magenta", QVariant(Qt::magenta));
colourCombo->addItem("Yellow", QVariant(Qt::yellow));
colourCombo->addItem("Light Gray", QVariant(Qt::lightGray));
colourCombo->addItem("Gray", QVariant(Qt::gray));
colourCombo->addItem("Dark Red", QVariant(Qt::darkRed));
colourCombo->addItem("Dark Green", QVariant(Qt::darkGreen));
colourCombo->addItem("Dark Blue", QVariant(Qt::darkBlue));
colourCombo->addItem("Dark Cyan", QVariant(Qt::darkCyan));
colourCombo->addItem("Dark Magenta", QVariant(Qt::darkMagenta));
colourCombo->addItem("Dark Yellow", QVariant(Qt::darkYellow));
colourCombo->addItem("Dark Gray", QVariant(Qt::darkGray));
// Set the initial colour
colourCombo->setCurrentIndex(getInitialColourIndex());
// Update plots when colour changed
connect(colourCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(plotWorkspaces()));
// Add widget to table
m_uiForm.twCurrentData->setCellWidget(currentRows, COLOUR, colourCombo);
// Insert the workspace name
QTableWidgetItem *wsNameItem = new QTableWidgetItem(tr(dataName));
wsNameItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
m_uiForm.twCurrentData->setItem(currentRows, WORKSPACE_NAME, wsNameItem);
// Insert the spectra offset
QSpinBox *offsetSpin = new QSpinBox();
offsetSpin->setMinimum(0);
offsetSpin->setMaximum(INT_MAX);
connect(offsetSpin, SIGNAL(valueChanged(int)), this, SLOT(spectrumIndexChanged()));
m_uiForm.twCurrentData->setCellWidget(currentRows, SPEC_OFFSET, offsetSpin);
// Insert the current displayed spectra
QTableWidgetItem *currentSpecItem = new QTableWidgetItem(tr("n/a"));
currentSpecItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
m_uiForm.twCurrentData->setItem(currentRows, CURRENT_SPEC, currentSpecItem);
m_uiForm.twCurrentData->blockSignals(false);
// Fit columns
m_uiForm.twCurrentData->resizeColumnsToContents();
// Replot the workspaces
plotWorkspaces();
}
/**
* Gets a colour as an index for the combo box for a new workspace.
* Looks for the lowest unused index, if all colours are used then returns 0.
*
* @return An index to set for the conbo box
*/
int DataComparison::getInitialColourIndex()
{
int numRows = m_uiForm.twCurrentData->rowCount();
// Just use the first colour if this is the first row
if(numRows <= 1)
return 0;
// Build a list of used colours
QList<int> usedColours;
for(int row = 0; row < numRows - 1; row++)
{
QComboBox *colourSelector = dynamic_cast<QComboBox *>(m_uiForm.twCurrentData->cellWidget(row, COLOUR));
int index = colourSelector->currentIndex();
usedColours << index;
}
// Find the smallest unused colour
int numColours = dynamic_cast<QComboBox *>(m_uiForm.twCurrentData->cellWidget(0, COLOUR))->count();
for(int i = 0; i < numColours; i++)
{
if(!usedColours.contains(i))
return i;
}
return 0;
}
/**
* Removes the data currently selected in the table from the plot.
*/
void DataComparison::removeSelectedData()
{
QList<QTableWidgetItem *> selectedItems = m_uiForm.twCurrentData->selectedItems();
while(!selectedItems.isEmpty())
{
// Get the row number of the item
int row = selectedItems[0]->row();
// Get workspace name
QString workspaceName = m_uiForm.twCurrentData->item(row, WORKSPACE_NAME)->text();
if(m_diffWorkspaceNames.first == workspaceName ||
m_diffWorkspaceNames.second == workspaceName)
{
clearDiff();
}
// Remove from data tabel
m_uiForm.twCurrentData->removeRow(row);
// Detach the old curve from the plot if it exists
if(m_curves.contains(workspaceName))
m_curves[workspaceName]->attach(NULL);
selectedItems = m_uiForm.twCurrentData->selectedItems();
}
// Replot the workspaces
updatePlot();
}
/**
* Removed all loaded data from the plot.
*/
void DataComparison::removeAllData()
{
clearDiff();
int numRows = m_uiForm.twCurrentData->rowCount();
for(int row = 0; row < numRows; row++)
{
// Get workspace name
QString workspaceName = m_uiForm.twCurrentData->item(0, WORKSPACE_NAME)->text();
// Remove from data tabel
m_uiForm.twCurrentData->removeRow(0);
// Detach the old curve from the plot if it exists
if(m_curves.contains(workspaceName))
m_curves[workspaceName]->attach(NULL);
}
// Replot the workspaces
spectrumIndexChanged();
}
/**
* Replots the currently loaded workspaces.
*/
void DataComparison::plotWorkspaces()
{
int globalSpecIndex = m_uiForm.sbSpectrum->value();
int maxGlobalSpecIndex = 0;
int numRows = m_uiForm.twCurrentData->rowCount();
for(int row = 0; row < numRows; row++)
{
// Get workspace
QString workspaceName = m_uiForm.twCurrentData->item(row, WORKSPACE_NAME)->text();
MatrixWorkspace_const_sptr workspace =
AnalysisDataService::Instance().retrieveWS<MatrixWorkspace>(workspaceName.toStdString());
int numSpec = static_cast<int>(workspace->getNumberHistograms());
// Calculate spectrum number
QSpinBox *specOffsetSpin = dynamic_cast<QSpinBox *>(m_uiForm.twCurrentData->cellWidget(row, SPEC_OFFSET));
int specOffset = specOffsetSpin->value();
int specIndex = globalSpecIndex - specOffset;
g_log.debug() << "Spectrum index for workspace " << workspaceName.toStdString()
<< " is " << specIndex << ", with offset " << specOffset << std::endl;
// See if this workspace extends the reach of the global spectrum selector
int maxGlobalSpecIndexForWs = numSpec + specOffset - 1;
if(maxGlobalSpecIndexForWs > maxGlobalSpecIndex)
maxGlobalSpecIndex = maxGlobalSpecIndexForWs;
// Check the spectrum index is in range
if(specIndex >= numSpec || specIndex < 0)
{
g_log.debug() << "Workspace " << workspaceName.toStdString()
<< ", spectrum index out of range." << std::endl;;
// Give "n/a" in current spectrum display
m_uiForm.twCurrentData->item(row, CURRENT_SPEC)->setText(tr("n/a"));
// Detech the curve from the plot
if(m_curves.contains(workspaceName))
m_curves[workspaceName]->attach(NULL);
continue;
}
// Update current spectrum display
m_uiForm.twCurrentData->item(row, CURRENT_SPEC)->setText(tr(QString::number(specIndex)));
// Create the curve data
const bool logScale(false), distribution(false);
QwtWorkspaceSpectrumData wsData(*workspace, static_cast<int>(specIndex), logScale, distribution);
// Detach the old curve from the plot if it exists
if(m_curves.contains(workspaceName))
m_curves[workspaceName]->attach(NULL);
QComboBox *colourSelector = dynamic_cast<QComboBox *>(m_uiForm.twCurrentData->cellWidget(row, COLOUR));
QColor curveColour = colourSelector->itemData(colourSelector->currentIndex()).value<QColor>();
// Create a new curve and attach it to the plot
boost::shared_ptr<QwtPlotCurve> curve(new QwtPlotCurve);
curve->setData(wsData);
curve->setPen(curveColour);
curve->attach(m_plot);
m_curves[workspaceName] = curve;
}
// Plot the diff
plotDiffWorkspace();
// Update the plot
m_plot->replot();
// Set the max value for global spectrum spin box
m_uiForm.sbSpectrum->setMaximum(maxGlobalSpecIndex);
m_uiForm.sbSpectrum->setSuffix(" / " + QString::number(maxGlobalSpecIndex));
}
/**
* Normalises the spectrum index offsets in the data table to zero.
*/
void DataComparison::normaliseSpectraOffsets()
{
m_uiForm.twCurrentData->blockSignals(true);
int numRows = m_uiForm.twCurrentData->rowCount();
int lowestOffset = INT_MAX;
// Find the lowest offset in the data table
for(int row = 0; row < numRows; row++)
{
QSpinBox *specOffsetSpin = dynamic_cast<QSpinBox *>(m_uiForm.twCurrentData->cellWidget(row, SPEC_OFFSET));
int specOffset = specOffsetSpin->value();
if(specOffset < lowestOffset)
lowestOffset = specOffset;
}
// Subtract the loest offset from all offsets to ensure at least one offset is zero
for(int row = 0; row < numRows; row++)
{
QSpinBox *specOffsetSpin = dynamic_cast<QSpinBox *>(m_uiForm.twCurrentData->cellWidget(row, SPEC_OFFSET));
int specOffset = specOffsetSpin->value();
specOffset -= lowestOffset;
specOffsetSpin->setValue(specOffset);
}
m_uiForm.twCurrentData->blockSignals(false);
}
/**
* Handles updating the plot, i.e. normalising offsets and replotting spectra.
*/
void DataComparison::updatePlot()
{
normaliseSpectraOffsets();
plotWorkspaces();
}
/**
* Handles a spectrum index or offset being modified.
*/
void DataComparison::spectrumIndexChanged()
{
normaliseSpectraOffsets();
plotWorkspaces();
bool maintainZoom = m_uiForm.cbMaintainZoom->isChecked();
if(!maintainZoom)
resetView();
}
/**
* Handles creating a diff of two workspaces and plotting it.
*/
void DataComparison::plotDiffWorkspace()
{
// Detach old curve
if(m_diffCurve != NULL)
m_diffCurve->attach(NULL);
// Do nothing if there are not two workspaces
if(m_diffWorkspaceNames.first.isEmpty() || m_diffWorkspaceNames.second.isEmpty())
return;
// Get pointers to the workspaces to be diffed
MatrixWorkspace_sptr ws1 = AnalysisDataService::Instance().retrieveWS<MatrixWorkspace>(
m_diffWorkspaceNames.first.toStdString());
MatrixWorkspace_sptr ws2 = AnalysisDataService::Instance().retrieveWS<MatrixWorkspace>(
m_diffWorkspaceNames.second.toStdString());
int ws1Spec = 0;
int ws2Spec = 0;
// Get the current spectrum for each workspace
int numRows = m_uiForm.twCurrentData->rowCount();
for(int row = 0; row < numRows; row++)
{
QString workspaceName = m_uiForm.twCurrentData->item(row, WORKSPACE_NAME)->text();
QString currentSpecName = m_uiForm.twCurrentData->item(row, CURRENT_SPEC)->text();
bool ok;
if(workspaceName == m_diffWorkspaceNames.first)
ws1Spec = currentSpecName.toInt(&ok);
if(workspaceName == m_diffWorkspaceNames.second)
ws2Spec = currentSpecName.toInt(&ok);
// Check that the spectra are not out of range
if(!ok)
{
// Set info message
QString infoMessage = workspaceName + ": Index out of range.";
m_uiForm.lbDiffInfo->setText(infoMessage);
return;
}
}
// Extract the current spectrum for both workspaces
IAlgorithm_sptr extractWs1Alg = AlgorithmManager::Instance().create("ExtractSingleSpectrum");
extractWs1Alg->setChild(true);
extractWs1Alg->initialize();
extractWs1Alg->setProperty("InputWorkspace", ws1);
extractWs1Alg->setProperty("OutputWorkspace", "__ws1_spec");
extractWs1Alg->setProperty("WorkspaceIndex", ws1Spec);
extractWs1Alg->execute();
MatrixWorkspace_sptr ws1SpecWs = extractWs1Alg->getProperty("OutputWorkspace");
IAlgorithm_sptr extractWs2Alg = AlgorithmManager::Instance().create("ExtractSingleSpectrum");
extractWs2Alg->setChild(true);
extractWs2Alg->initialize();
extractWs2Alg->setProperty("InputWorkspace", ws2);
extractWs2Alg->setProperty("OutputWorkspace", "__ws2_spec");
extractWs2Alg->setProperty("WorkspaceIndex", ws2Spec);
extractWs2Alg->execute();
MatrixWorkspace_sptr ws2SpecWs = extractWs2Alg->getProperty("OutputWorkspace");
// Rebin the second workspace to the first
// (needed for identical binning for Minus algorithm)
IAlgorithm_sptr rebinAlg = AlgorithmManager::Instance().create("RebinToWorkspace");
rebinAlg->setChild(true);
rebinAlg->initialize();
rebinAlg->setProperty("WorkspaceToRebin", ws2SpecWs);
rebinAlg->setProperty("WorkspaceToMatch", ws1SpecWs);
rebinAlg->setProperty("OutputWorkspace", "__ws2_spec_rebin");
rebinAlg->execute();
MatrixWorkspace_sptr rebinnedWs2SpecWs = rebinAlg->getProperty("OutputWorkspace");
// Subtract the two extracted spectra
IAlgorithm_sptr minusAlg = AlgorithmManager::Instance().create("Minus");
minusAlg->setChild(true);
minusAlg->initialize();
minusAlg->setProperty("LHSWorkspace", ws1SpecWs);
minusAlg->setProperty("RHSWorkspace", rebinnedWs2SpecWs);
minusAlg->setProperty("OutputWorkspace", "__diff");
minusAlg->execute();
MatrixWorkspace_sptr diffWorkspace = minusAlg->getProperty("OutputWorkspace");
// Create curve and add to plot
QwtWorkspaceSpectrumData wsData(*diffWorkspace, 0, false, false);
boost::shared_ptr<QwtPlotCurve> curve(new QwtPlotCurve);
curve->setData(wsData);
curve->setPen(QColor(Qt::green));
curve->attach(m_plot);
m_diffCurve = curve;
// Set info message
QString infoMessage = m_diffWorkspaceNames.first + "(" + QString::number(ws1Spec) + ") - "
+ m_diffWorkspaceNames.second + "(" + QString::number(ws2Spec) + ")";
m_uiForm.lbDiffInfo->setText(infoMessage);
}
/**
* Configures a diff of the two currently selected workspaces in the table to be plotted
* when plotWorkspaces is called.
*
* Does nothing if there are not 2 workspaces selected.
*/
void DataComparison::diffSelected()
{
QList<QTableWidgetItem *> selectedItems = m_uiForm.twCurrentData->selectedItems();
QList<int> selectedRows;
// Generate a list of selected row numbers
for(auto it = selectedItems.begin(); it != selectedItems.end(); ++it)
{
int row = (*it)->row();
if(!selectedRows.contains(row))
selectedRows << (*it)->row();
}
// Check there is the correct number of selected items
if(selectedRows.size() != 2)
{
g_log.error() << "Need to have exactly 2 workspaces selected for diff (have "
<< selectedRows.size() << ")" << std::endl;
return;
}
// Record the workspace names
m_diffWorkspaceNames = qMakePair(m_uiForm.twCurrentData->item(selectedRows[0], WORKSPACE_NAME)->text(),
m_uiForm.twCurrentData->item(selectedRows[1], WORKSPACE_NAME)->text());
// Update the plot
plotWorkspaces();
}
/**
* Removes the configured diff.
*/
void DataComparison::clearDiff()
{
// Clear the info message
m_uiForm.lbDiffInfo->setText("No current diff.");
// Remove the recorded diff workspace names
m_diffWorkspaceNames = qMakePair(QString(), QString());
// Update the plot
plotWorkspaces();
}
/**
* Toggles the pan plot tool.
*
* @param enabled If the tool should be enabled
*/
void DataComparison::togglePan(bool enabled)
{
// First disbale the zoom tool
if(enabled && m_uiForm.pbZoom->isChecked())
m_uiForm.pbZoom->setChecked(false);
g_log.debug() << "Pan tool enabled: " << enabled << std::endl;
m_panTool->setEnabled(enabled);
m_magnifyTool->setEnabled(enabled);
}
/**
* Toggles the zoom plot tool.
*
* @param enabled If the tool should be enabled
*/
void DataComparison::toggleZoom(bool enabled)
{
// First disbale the pan tool
if(enabled && m_uiForm.pbPan->isChecked())
m_uiForm.pbPan->setChecked(false);
g_log.debug() << "Zoom tool enabled: " << enabled << std::endl;
m_zoomTool->setEnabled(enabled);
m_magnifyTool->setEnabled(enabled);
}
/**
* Rests the zoom level to fit all curves on the plot.
*/
void DataComparison::resetView()
{
g_log.debug("Reset plot view");
// Auto scale the axis
m_plot->setAxisAutoScale(QwtPlot::xBottom);
m_plot->setAxisAutoScale(QwtPlot::yLeft);
// Set this as the default zoom level
m_zoomTool->setZoomBase(true);
}
/**
* Handles removing a workspace when it is deleted from ADS.
*
* @param wsName Name of the workspace being deleted
* @param ws Pointer to the workspace
*/
void DataComparison::preDeleteHandle(const std::string& wsName,const boost::shared_ptr<Mantid::API::Workspace> ws)
{
UNUSED_ARG(ws);
QString oldWsName = QString::fromStdString(wsName);
// Find the row in the data table for the workspace
int numRows = m_uiForm.twCurrentData->rowCount();
for(int row = 0; row < numRows; row++)
{
// Remove the row
QString workspaceName = m_uiForm.twCurrentData->item(row, WORKSPACE_NAME)->text();
if(workspaceName == oldWsName)
{
m_uiForm.twCurrentData->removeRow(row);
break;
}
}
// Detach the old curve from the plot if it exists
if(m_curves.contains(oldWsName))
m_curves[oldWsName]->attach(NULL);
// Update the plot
plotWorkspaces();
}
/**
* Handle a workspace being renamed.
*
* @param oldName Old name for the workspace
* @param newName New name for the workspace
*/
void DataComparison::renameHandle(const std::string &oldName, const std::string &newName)
{
QString oldWsName = QString::fromStdString(oldName);
// Find the row in the data table for the workspace
int numRows = m_uiForm.twCurrentData->rowCount();
for(int row = 0; row < numRows; row++)
{
// Rename the workspace in the data table
QString workspaceName = m_uiForm.twCurrentData->item(row, WORKSPACE_NAME)->text();
if(workspaceName == oldWsName)
{
m_uiForm.twCurrentData->item(row, WORKSPACE_NAME)->setText(QString::fromStdString(newName));
break;
}
}
// Detach the old curve from the plot if it exists
if(m_curves.contains(oldWsName))
m_curves[oldWsName]->attach(NULL);
// Update the plot
plotWorkspaces();
}
/**
* Handle replotting after a workspace has been changed.
*
* @param wsName Name of changed workspace
* @ws Pointer to changed workspace
*/
void DataComparison::afterReplaceHandle(const std::string& wsName,const boost::shared_ptr<Mantid::API::Workspace> ws)
{
UNUSED_ARG(wsName);
UNUSED_ARG(ws);
// Update the plot
plotWorkspaces();
}