/** method does preliminary calculations of the detectors positions to convert
results into k-dE space ;
and places the results into static cash to be used in subsequent calls to this
algorithm */
void PreprocessDetectorsToMD::processDetectorsPositions(
const API::MatrixWorkspace_const_sptr &inputWS,
DataObjects::TableWorkspace_sptr &targWS) {
g_log.information()
<< "Preprocessing detector locations in a target reciprocal space\n";
//
Geometry::Instrument_const_sptr instrument = inputWS->getInstrument();
// this->pBaseInstr = instrument->baseInstrument();
//
Geometry::IComponent_const_sptr source = instrument->getSource();
Geometry::IComponent_const_sptr sample = instrument->getSample();
if ((!source) || (!sample)) {
g_log.error() << " Instrument is not fully defined. Can not identify "
"source or sample\n";
throw Kernel::Exception::InstrumentDefinitionError(
"Instrument not sufficiently defined: failed to get source and/or "
"sample");
}
// L1
try {
double L1 = source->getDistance(*sample);
targWS->logs()->addProperty<double>("L1", L1, true);
g_log.debug() << "Source-sample distance: " << L1 << '\n';
} catch (Kernel::Exception::NotFoundError &) {
throw Kernel::Exception::InstrumentDefinitionError(
"Unable to calculate source-sample distance for workspace",
inputWS->getTitle());
}
// Instrument name
std::string InstrName = instrument->getName();
targWS->logs()->addProperty<std::string>(
"InstrumentName", InstrName,
true); // "The name which should unique identify current instrument");
targWS->logs()->addProperty<bool>("FakeDetectors", false, true);
// get access to the workspace memory
auto &sp2detMap = targWS->getColVector<size_t>("spec2detMap");
auto &detId = targWS->getColVector<int32_t>("DetectorID");
auto &detIDMap = targWS->getColVector<size_t>("detIDMap");
auto &L2 = targWS->getColVector<double>("L2");
auto &TwoTheta = targWS->getColVector<double>("TwoTheta");
auto &Azimuthal = targWS->getColVector<double>("Azimuthal");
auto &detDir = targWS->getColVector<Kernel::V3D>("DetDirections");
// Efixed; do we need one and does one exist?
double Efi = targWS->getLogs()->getPropertyValueAsType<double>("Ei");
float *pEfixedArray(nullptr);
const Geometry::ParameterMap &pmap = inputWS->constInstrumentParameters();
if (m_getEFixed)
pEfixedArray = targWS->getColDataArray<float>("eFixed");
// check if one needs to generate masked detectors column.
int *pMasksArray(nullptr);
if (m_getIsMasked)
pMasksArray = targWS->getColDataArray<int>("detMask");
//// progress message appearance
size_t div = 100;
size_t nHist = targWS->rowCount();
Mantid::API::Progress theProgress(this, 0, 1, nHist);
//// Loop over the spectra
uint32_t liveDetectorsCount(0);
const auto &spectrumInfo = inputWS->spectrumInfo();
for (size_t i = 0; i < nHist; i++) {
sp2detMap[i] = std::numeric_limits<uint64_t>::quiet_NaN();
detId[i] = std::numeric_limits<int32_t>::quiet_NaN();
detIDMap[i] = std::numeric_limits<uint64_t>::quiet_NaN();
L2[i] = std::numeric_limits<double>::quiet_NaN();
TwoTheta[i] = std::numeric_limits<double>::quiet_NaN();
Azimuthal[i] = std::numeric_limits<double>::quiet_NaN();
// detMask[i] = true;
if (!spectrumInfo.hasDetectors(i) || spectrumInfo.isMonitor(i))
continue;
// if masked detectors state is not used, masked detectors just ignored;
bool maskDetector = spectrumInfo.isMasked(i);
if (m_getIsMasked)
*(pMasksArray + liveDetectorsCount) = maskDetector ? 1 : 0;
else if (maskDetector)
continue;
const auto &spDet = spectrumInfo.detector(i);
// calculate the requested values;
sp2detMap[i] = liveDetectorsCount;
detId[liveDetectorsCount] = int32_t(spDet.getID());
detIDMap[liveDetectorsCount] = i;
L2[liveDetectorsCount] = spectrumInfo.l2(i);
double polar = spectrumInfo.twoTheta(i);
double azim = spDet.getPhi();
TwoTheta[liveDetectorsCount] = polar;
Azimuthal[liveDetectorsCount] = azim;
double sPhi = sin(polar);
double ez = cos(polar);
double ex = sPhi * cos(azim);
double ey = sPhi * sin(azim);
detDir[liveDetectorsCount].setX(ex);
detDir[liveDetectorsCount].setY(ey);
detDir[liveDetectorsCount].setZ(ez);
// double sinTheta=sin(0.5*polar);
// this->SinThetaSq[liveDetectorsCount] = sinTheta*sinTheta;
// specific code which should work and makes sense
// for indirect instrument but may be deployed on any code with Ei property
// defined;
if (pEfixedArray) {
try {
Geometry::Parameter_sptr par = pmap.getRecursive(&spDet, "eFixed");
if (par)
Efi = par->value<double>();
} catch (std::runtime_error &) {
}
// set efixed for each existing detector
*(pEfixedArray + liveDetectorsCount) = static_cast<float>(Efi);
}
liveDetectorsCount++;
if (i % div == 0)
theProgress.report(i, "Preprocessing detectors");
}
targWS->logs()->addProperty<uint32_t>("ActualDetectorsNum",
liveDetectorsCount, true);
theProgress.report();
g_log.information() << "Finished preprocessing detector locations. Found: "
<< liveDetectorsCount << " detectors out of: " << nHist
<< " histograms\n";
}
/**The method responsible for analyzing input workspace parameters and preprocessing detectors positions into reciprocal space
*
* @param InWS2D -- input Matrix workspace with defined instrument
* @param dEModeRequested -- energy conversion mode (direct/indirect/elastic)
* @param updateMasks -- if full detector positions calculations or just update masking requested
* @param OutWSName -- the name for the preprocessed detectors workspace to have in the analysis data service
*
* @return shared pointer to the workspace with preprocessed detectors information.
*/
DataObjects::TableWorkspace_const_sptr ConvertToMDParent::preprocessDetectorsPositions( Mantid::API::MatrixWorkspace_const_sptr InWS2D,const std::string &dEModeRequested,
bool updateMasks, const std::string & OutWSName)
{
DataObjects::TableWorkspace_sptr TargTableWS;
Kernel::DeltaEMode::Type Emode;
// Do we need to reuse output workspace
bool storeInDataService(true);
std::string tOutWSName(OutWSName);
if(tOutWSName=="-"||tOutWSName.empty()) // TargTableWS is recalculated each time;
{
storeInDataService = false;
tOutWSName = "ServiceTableWS"; // TODO: should be hidden?
}
else
{
storeInDataService = true;
}
// if output workspace exists in dataservice, we may try to use it
if(storeInDataService && API::AnalysisDataService::Instance().doesExist(tOutWSName) )
{
TargTableWS = API::AnalysisDataService::Instance().retrieveWS<DataObjects::TableWorkspace>(tOutWSName);
// get number of all histograms (may be masked or invalid)
size_t nHist = InWS2D->getNumberHistograms();
size_t nDetMap=TargTableWS->rowCount();
if(nHist==nDetMap)
{
// let's take at least some precaution to ensure that instrument have not changed
std::string currentWSInstrumentName = InWS2D->getInstrument()->getName();
std::string oldInstrName = TargTableWS->getLogs()->getPropertyValueAsType<std::string>("InstrumentName");
if(oldInstrName==currentWSInstrumentName)
{
if(!updateMasks) return TargTableWS;
//Target workspace with preprocessed detectors exists and seems is correct one.
// We still need to update masked detectors information
TargTableWS = this->runPreprocessDetectorsToMDChildUpdatingMasks(InWS2D,tOutWSName,dEModeRequested,Emode);
return TargTableWS;
}
}
else // there is a workspace in the data service with the same name but this ws is not suitable as target for this algorithm.
{ // Should delete this WS from the dataservice
API::AnalysisDataService::Instance().remove(tOutWSName);
}
}
// No result found in analysis data service or the result is unsatisfactory. Try to calculate target workspace.
TargTableWS =this->runPreprocessDetectorsToMDChildUpdatingMasks(InWS2D,tOutWSName,dEModeRequested,Emode);
if(storeInDataService)
API::AnalysisDataService::Instance().addOrReplace(tOutWSName,TargTableWS);
// else
// TargTableWS->setName(OutWSName);
// check if we got what we wanted:
// in direct or indirect mode input ws has to have input energy
if(Emode==Kernel::DeltaEMode::Direct||Emode==Kernel::DeltaEMode::Indirect)
{
double m_Ei = TargTableWS->getLogs()->getPropertyValueAsType<double>("Ei");
if(isNaN(m_Ei))
{
// Direct mode needs Ei
if(Emode==Kernel::DeltaEMode::Direct)throw(std::invalid_argument("Input neutron's energy has to be defined in inelastic mode "));
// Do we have at least something for Indirect?
float *eFixed = TargTableWS->getColDataArray<float>("eFixed");
if(!eFixed)
throw(std::invalid_argument("Input neutron's energy has to be defined in inelastic mode "));
uint32_t NDetectors = TargTableWS->getLogs()->getPropertyValueAsType<uint32_t>("ActualDetectorsNum");
for(uint32_t i=0;i<NDetectors;i++)
if(isNaN(*(eFixed+i)))throw(std::invalid_argument("Undefined eFixed energy for detector N: "+boost::lexical_cast<std::string>(i)));
}
}
return TargTableWS;
}
