/**
Executes any meta-data loading required.
*/
void SQWLoadingPresenter::executeLoadMetadata()
{
using namespace Mantid::API;
using namespace Mantid::Geometry;
AnalysisDataService::Instance().remove("MD_EVENT_WS_ID");
IAlgorithm_sptr alg = AlgorithmManager::Instance().create("LoadSQW");
alg->initialize();
alg->setPropertyValue("Filename", this->m_filename);
alg->setProperty("MetadataOnly", true); //Don't load the events.
alg->setPropertyValue("OutputWorkspace", "MD_EVENT_WS_ID");
alg->execute();
Workspace_sptr result=AnalysisDataService::Instance().retrieve("MD_EVENT_WS_ID");
Mantid::API::IMDEventWorkspace_sptr eventWs = boost::dynamic_pointer_cast<Mantid::API::IMDEventWorkspace>(result);
m_wsTypeName = eventWs->id();
//Call base-class extraction method.
extractMetadata(eventWs);
}
/*
Executes the underlying algorithm to create the MVP model.
@param factory : visualisation factory to use.
@param loadingProgressUpdate : Handler for GUI updates while algorithm
progresses.
@param drawingProgressUpdate : Handler for GUI updates while
vtkDataSetFactory::create occurs.
*/
vtkSmartPointer<vtkDataSet>
EventNexusLoadingPresenter::execute(vtkDataSetFactory *factory,
ProgressAction &loadingProgressUpdate,
ProgressAction &drawingProgressUpdate) {
using namespace Mantid::API;
using namespace Mantid::Geometry;
this->m_view->getLoadInMemory(); // TODO, nexus reader algorithm currently has
// no use of this.
if (this->shouldLoad()) {
Poco::NObserver<ProgressAction,
Mantid::API::Algorithm::ProgressNotification>
observer(loadingProgressUpdate, &ProgressAction::handler);
AnalysisDataService::Instance().remove("MD_EVENT_WS_ID");
Algorithm_sptr loadAlg =
AlgorithmManager::Instance().createUnmanaged("LoadEventNexus");
loadAlg->initialize();
loadAlg->setChild(true);
loadAlg->setPropertyValue("Filename", this->m_filename);
loadAlg->setPropertyValue("OutputWorkspace", "temp_ws");
loadAlg->addObserver(observer);
loadAlg->executeAsChildAlg();
loadAlg->removeObserver(observer);
Workspace_sptr temp = loadAlg->getProperty("OutputWorkspace");
IEventWorkspace_sptr tempWS =
boost::dynamic_pointer_cast<IEventWorkspace>(temp);
Algorithm_sptr convertAlg = AlgorithmManager::Instance().createUnmanaged(
"ConvertToDiffractionMDWorkspace", 1);
convertAlg->initialize();
convertAlg->setChild(true);
convertAlg->setProperty("InputWorkspace", tempWS);
convertAlg->setProperty<bool>("ClearInputWorkspace", false);
convertAlg->setProperty<bool>("LorentzCorrection", true);
convertAlg->setPropertyValue("OutputWorkspace", "converted_ws");
convertAlg->addObserver(observer);
convertAlg->executeAsChildAlg();
convertAlg->removeObserver(observer);
IMDEventWorkspace_sptr outWS = convertAlg->getProperty("OutputWorkspace");
AnalysisDataService::Instance().addOrReplace("MD_EVENT_WS_ID", outWS);
}
Workspace_sptr result =
AnalysisDataService::Instance().retrieve("MD_EVENT_WS_ID");
Mantid::API::IMDEventWorkspace_sptr eventWs =
boost::dynamic_pointer_cast<Mantid::API::IMDEventWorkspace>(result);
m_wsTypeName = eventWs->id();
factory->setRecursionDepth(this->m_view->getRecursionDepth());
auto visualDataSet = factory->oneStepCreate(
eventWs, drawingProgressUpdate); // HACK: progressUpdate should be
// argument for drawing!
this->extractMetadata(*eventWs);
this->appendMetadata(visualDataSet, eventWs->getName());
return visualDataSet;
}
