/**
* @brief MDHWInMemoryLoadingPresenter::transposeWs
*
* vtkDataSets are usually provided in 3D, trying to create these where one of
*those dimensions
* might be integrated out leads to empty datasets. To avoid this we reorder the
*dimensions in our workspace
* prior to visualisation by transposing if if needed.
*
* @param inHistoWs : An input workspace that may integrated dimensions
*anywhere.
* @param outCachedHistoWs : Cached histo workspace. To write to if needed.
* @return A workspace that can be directly rendered from. Integrated dimensions
*are always last.
*/
void MDHWLoadingPresenter::transposeWs(
Mantid::API::IMDHistoWorkspace_sptr &inHistoWs,
Mantid::API::IMDHistoWorkspace_sptr &outCachedHistoWs) {
using namespace Mantid::API;
if (!outCachedHistoWs) {
/*
Construct dimension indexes list for transpose. We do this by forcing
integrated
dimensions to be the last in the list. All other orderings are kept.
*/
std::vector<int> integratedDims;
std::vector<int> nonIntegratedDims;
for (int i = 0; i < int(inHistoWs->getNumDims()); ++i) {
auto dim = inHistoWs->getDimension(i);
if (dim->getIsIntegrated()) {
integratedDims.push_back(i);
} else {
nonIntegratedDims.push_back(i);
}
}
std::vector<int> orderedDims = nonIntegratedDims;
orderedDims.insert(orderedDims.end(), integratedDims.begin(),
integratedDims.end());
/*
If there has been any reordering above, then the dimension indexes will
no longer be sorted. We use that to determine if we can avoid transposing
the workspace.
*/
if (!std::is_sorted(orderedDims.begin(), orderedDims.end())) {
IAlgorithm_sptr alg = AlgorithmManager::Instance().create("TransposeMD");
alg->setChild(true);
alg->initialize();
alg->setProperty("InputWorkspace", inHistoWs);
alg->setPropertyValue("OutputWorkspace", "dummy");
alg->setProperty("Axes", orderedDims);
alg->execute();
IMDHistoWorkspace_sptr visualHistoWs =
alg->getProperty("OutputWorkspace");
outCachedHistoWs = visualHistoWs;
} else {
// No need to transpose anything.
outCachedHistoWs = inHistoWs;
}
}
}
/*
Extract the geometry and function information
@param histoWs : histogram workspace to get the information from.
*/
void MDHWLoadingPresenter::extractMetadata(Mantid::API::IMDHistoWorkspace_sptr histoWs)
{
using namespace Mantid::Geometry;
MDGeometryBuilderXML<NoDimensionPolicy> refresh;
xmlBuilder= refresh; //Reassign.
std::vector<IMDDimension_sptr> dimensions;
size_t nDimensions = histoWs->getNumDims();
for (size_t d=0; d<nDimensions; d++)
{
IMDDimension_const_sptr inDim = histoWs->getDimension(d);
coord_t min = inDim->getMinimum();
coord_t max = inDim->getMaximum();
if (min > max)
{
min = 0.0;
max = 1.0;
}
//std::cout << "dim " << d << min << " to " << max << std::endl;
axisLabels.push_back(makeAxisTitle(inDim));
MDHistoDimension_sptr dim(new MDHistoDimension(inDim->getName(), inDim->getName(), inDim->getUnits(), min, max, inDim->getNBins()));
dimensions.push_back(dim);
}
//Configuring the geometry xml builder allows the object panel associated with this reader to later
//determine how to display all geometry related properties.
if(nDimensions > 0)
{
xmlBuilder.addXDimension( dimensions[0] );
}
if(nDimensions > 1)
{
xmlBuilder.addYDimension( dimensions[1] );
}
if(nDimensions > 2)
{
xmlBuilder.addZDimension( dimensions[2] );
}
if(nDimensions > 3)
{
tDimension = dimensions[3];
xmlBuilder.addTDimension(tDimension);
}
m_isSetup = true;
}