/**
* Construct a QwtWorkspaceSpectrumData object with a source workspace
* @param workspace The workspace containing the data
* @param wsIndex Index of the spectrum to plot
* @param logScaleY If true, plot a log scale
* @param plotAsDistribution If true and the data is histogram and not already a
* distribution then plot the Y values/X bin-width
*/
QwtWorkspaceSpectrumData::QwtWorkspaceSpectrumData(
const Mantid::API::MatrixWorkspace &workspace, int wsIndex,
const bool logScaleY, const bool plotAsDistribution)
: MantidQwtMatrixWorkspaceData(logScaleY), m_wsIndex(wsIndex),
m_X(workspace.readX(wsIndex)), m_Y(workspace.readY(wsIndex)),
m_E(workspace.readE(wsIndex)), m_xTitle(), m_yTitle(),
m_isHistogram(workspace.isHistogramData()),
m_dataIsNormalized(workspace.isDistribution()), m_binCentres(false),
m_isDistribution(false) {
// Actual plotting based on what type of data we have
setAsDistribution(plotAsDistribution &&
!m_dataIsNormalized); // takes into account if this is a
// histogram and sets m_isDistribution
m_xTitle = MantidQt::API::PlotAxis(workspace, 0).title();
m_yTitle = MantidQt::API::PlotAxis((m_dataIsNormalized || m_isDistribution),
workspace).title();
// Calculate the min and max values
calculateYMinAndMax();
}
/**
* @param workspace A reference to the workspace object that this data refers to
*/
void QwtWorkspaceBinData::init(const Mantid::API::MatrixWorkspace &workspace)
{
if(workspace.axes() != 2)
{
std::ostringstream os;
os << "QwtWorkspaceBinData(): Workspace must have two axes, found "
<< workspace.axes();
throw std::invalid_argument(os.str());
}
// Check binIndex is valid
if(static_cast<size_t>(m_binIndex) >= workspace.blocksize())
{
std::ostringstream os;
os << "QwtWorkspaceBinData(): Index out of range. index="
<< m_binIndex << ", nvalues=" << workspace.blocksize();
throw std::out_of_range(os.str());
}
// Fill vectors of data
const size_t nhist = workspace.getNumberHistograms();
auto* vertAxis = workspace.getAxis(1); //supplies X values
m_X.resize(nhist);
m_Y.resize(nhist);
m_E.resize(nhist);
for(size_t i = 0; i < nhist; ++i)
{
m_X[i] = vertAxis->getValue(i);
m_Y[i] = workspace.readY(i)[m_binIndex];
m_E[i] = workspace.readE(i)[m_binIndex];
}
// meta data
m_xTitle = MantidQt::API::PlotAxis(workspace, 1).title();
m_yTitle = MantidQt::API::PlotAxis(workspace).title();
}