/**
Overlay the overlap 1D workspace over the original 1D workspace. overlap shouuld overwrite values on the sum workspace.
@param original : Original 1D workspace to be overwritten only in the region of the overlap.
@param overlap : Overlap 1D workspace to overwrite with
*/
void Stitch1DMD::overlayOverlap(MDHistoWorkspace_sptr original, IMDHistoWorkspace_sptr overlap)
{
const auto targetDim = original->getDimension(0);
const double targetQMax = targetDim->getMaximum();
const double targetQMin = targetDim->getMinimum();
const size_t targetNbins = targetDim->getNBins();
const double targetStep = double(targetNbins) / (targetQMax - targetQMin);
const double targetC = -1 * targetStep * targetQMin;
const auto overlapDim = overlap->getDimension(0);
const double overlapQMax = overlapDim->getMaximum();
const double overlapQMin = overlapDim->getMinimum();
const size_t overlapNBins = overlapDim->getNBins();
const double overlapStep = (overlapQMax - overlapQMin) / double(overlapNBins);
const double overlapC = overlapQMin;
for(size_t i = 0; i < overlapNBins; ++i)
{
// Calculate the q value for each index in the overlap region.
const double q = (overlapStep * double(i)) + overlapC;
// Find the target index by recentering (adding 0.5) and then truncating to an integer.
size_t targetIndex = size_t((targetStep * q) + targetC + 0.5) ;
// Overwrite signal
original->setSignalAt(targetIndex, overlap->signalAt(i));
// Overwrite error
original->setErrorSquaredAt(targetIndex, overlap->errorSquaredAt(i));
}
}
/** Execute the algorithm.
*/
void TransformMD::exec() {
Mantid::API::IMDWorkspace_sptr inWS;
Mantid::API::IMDWorkspace_sptr outWS;
inWS = getProperty("InputWorkspace");
outWS = getProperty("OutputWorkspace");
std::string outName = getPropertyValue("OutputWorkspace");
if (boost::dynamic_pointer_cast<MatrixWorkspace>(inWS))
throw std::runtime_error("TransformMD can only transform a "
"MDHistoWorkspace or a MDEventWorkspace.");
if (outWS != inWS) {
// NOT in-place. So first we clone inWS into outWS
IAlgorithm_sptr clone =
this->createChildAlgorithm("CloneMDWorkspace", 0.0, 0.5, true);
clone->setProperty("InputWorkspace", inWS);
clone->executeAsChildAlg();
outWS = clone->getProperty("OutputWorkspace");
}
if (!outWS)
throw std::runtime_error("Invalid output workspace.");
size_t nd = outWS->getNumDims();
m_scaling = getProperty("Scaling");
m_offset = getProperty("Offset");
// Replicate single values
if (m_scaling.size() == 1)
m_scaling = std::vector<double>(nd, m_scaling[0]);
if (m_offset.size() == 1)
m_offset = std::vector<double>(nd, m_offset[0]);
// Check the size
if (m_scaling.size() != nd)
throw std::invalid_argument("Scaling argument must be either length 1 or "
"match the number of dimensions.");
if (m_offset.size() != nd)
throw std::invalid_argument("Offset argument must be either length 1 or "
"match the number of dimensions.");
// Transform the dimensions
outWS->transformDimensions(m_scaling, m_offset);
MDHistoWorkspace_sptr histo =
boost::dynamic_pointer_cast<MDHistoWorkspace>(outWS);
IMDEventWorkspace_sptr event =
boost::dynamic_pointer_cast<IMDEventWorkspace>(outWS);
if (histo) {
// Recalculate all the values since the dimensions changed.
histo->cacheValues();
// Expect first 3 dimensions to be -1 for changing conventions
for (int i = 0; i < static_cast<int>(m_scaling.size()); i++)
if (m_scaling[i] < 0) {
std::vector<int> axes(m_scaling.size()); // vector with ints.
std::iota(std::begin(axes), std::end(axes), 0); // Fill with 0, 1, ...
axes[0] = i;
axes[i] = 0;
if (i > 0)
histo = transposeMD(histo, axes);
signal_t *signals = histo->getSignalArray();
signal_t *errorsSq = histo->getErrorSquaredArray();
signal_t *numEvents = histo->getNumEventsArray();
// Find the extents
size_t nPoints =
static_cast<size_t>(histo->getDimension(0)->getNBins());
size_t mPoints = 1;
for (size_t k = 1; k < histo->getNumDims(); k++) {
mPoints *= static_cast<size_t>(histo->getDimension(k)->getNBins());
}
// other dimensions
for (size_t j = 0; j < mPoints; j++) {
this->reverse(signals + j * nPoints, nPoints);
this->reverse(errorsSq + j * nPoints, nPoints);
this->reverse(numEvents + j * nPoints, nPoints);
}
histo = transposeMD(histo, axes);
}
// Pass on the display normalization from the input workspace
histo->setDisplayNormalization(inWS->displayNormalizationHisto());
this->setProperty("OutputWorkspace", histo);
} else if (event) {
// Call the method for this type of MDEventWorkspace.
CALL_MDEVENT_FUNCTION(this->doTransform, outWS);
Progress *prog2 = nullptr;
ThreadScheduler *ts = new ThreadSchedulerFIFO();
ThreadPool tp(ts, 0, prog2);
event->splitAllIfNeeded(ts);
// prog2->resetNumSteps( ts->size(), 0.4, 0.6);
tp.joinAll();
event->refreshCache();
// Set the special coordinate system.
IMDEventWorkspace_sptr inEvent =
boost::dynamic_pointer_cast<IMDEventWorkspace>(inWS);
event->setCoordinateSystem(inEvent->getSpecialCoordinateSystem());
if (m_scaling[0] < 0) {
// Only need these 2 algorithms for transforming with negative number
std::vector<double> extents;
std::vector<std::string> names, units;
for (size_t d = 0; d < nd; d++) {
Geometry::IMDDimension_const_sptr dim = event->getDimension(d);
// Find the extents
extents.push_back(dim->getMinimum());
extents.push_back(dim->getMaximum());
names.push_back(std::string(dim->getName()));
units.push_back(dim->getUnits());
}
Algorithm_sptr create_alg = createChildAlgorithm("CreateMDWorkspace");
create_alg->setProperty("Dimensions", static_cast<int>(nd));
create_alg->setProperty("EventType", event->getEventTypeName());
create_alg->setProperty("Extents", extents);
create_alg->setProperty("Names", names);
create_alg->setProperty("Units", units);
create_alg->setPropertyValue("OutputWorkspace", "__none");
create_alg->executeAsChildAlg();
Workspace_sptr none = create_alg->getProperty("OutputWorkspace");
AnalysisDataService::Instance().addOrReplace(outName, event);
AnalysisDataService::Instance().addOrReplace("__none", none);
Mantid::API::BoxController_sptr boxController = event->getBoxController();
std::vector<int> splits;
for (size_t d = 0; d < nd; d++) {
splits.push_back(static_cast<int>(boxController->getSplitInto(d)));
}
Algorithm_sptr merge_alg = createChildAlgorithm("MergeMD");
merge_alg->setPropertyValue("InputWorkspaces", outName + ",__none");
merge_alg->setProperty("SplitInto", splits);
merge_alg->setProperty(
"SplitThreshold",
static_cast<int>(boxController->getSplitThreshold()));
merge_alg->setProperty("MaxRecursionDepth", 13);
merge_alg->executeAsChildAlg();
event = merge_alg->getProperty("OutputWorkspace");
AnalysisDataService::Instance().remove("__none");
}
this->setProperty("OutputWorkspace", event);
}
}
