/**
* Execute the algorithm.
*/
void LoadBBY::exec() {
// Delete the output workspace name if it existed
std::string outName = getPropertyValue("OutputWorkspace");
if (API::AnalysisDataService::Instance().doesExist(outName))
API::AnalysisDataService::Instance().remove(outName);
// Get the name of the data file.
std::string filename = getPropertyValue(FilenameStr);
ANSTO::Tar::File tarFile(filename);
if (!tarFile.good())
throw std::invalid_argument("invalid BBY file");
// region of intreset
std::vector<bool> roi = createRoiVector(getPropertyValue(MaskStr));
double tofMinBoundary = getProperty(FilterByTofMinStr);
double tofMaxBoundary = getProperty(FilterByTofMaxStr);
double timeMinBoundary = getProperty(FilterByTimeStartStr);
double timeMaxBoundary = getProperty(FilterByTimeStopStr);
if (isEmpty(tofMaxBoundary))
tofMaxBoundary = std::numeric_limits<double>::infinity();
if (isEmpty(timeMaxBoundary))
timeMaxBoundary = std::numeric_limits<double>::infinity();
API::Progress prog(this, 0.0, 1.0, Progress_Total);
prog.doReport("creating instrument");
// create workspace
DataObjects::EventWorkspace_sptr eventWS =
boost::make_shared<DataObjects::EventWorkspace>();
eventWS->initialize(HISTO_BINS_Y * HISTO_BINS_X,
2, // number of TOF bin boundaries
1);
// set the units
eventWS->getAxis(0)->unit() = Kernel::UnitFactory::Instance().create("TOF");
eventWS->setYUnit("Counts");
// set title
const std::vector<std::string> &subFiles = tarFile.files();
for (const auto &subFile : subFiles)
if (subFile.compare(0, 3, "BBY") == 0) {
std::string title = subFile;
if (title.rfind(".hdf") == title.length() - 4)
title.resize(title.length() - 4);
if (title.rfind(".nx") == title.length() - 3)
title.resize(title.length() - 3);
eventWS->setTitle(title);
break;
}
// create instrument
InstrumentInfo instrumentInfo;
// Geometry::Instrument_sptr instrument =
createInstrument(tarFile, /* ref */ instrumentInfo);
// eventWS->setInstrument(instrument);
// load events
size_t numberHistograms = eventWS->getNumberHistograms();
std::vector<EventVector_pt> eventVectors(numberHistograms, nullptr);
std::vector<size_t> eventCounts(numberHistograms, 0);
// phase correction
Kernel::Property *periodMasterProperty =
getPointerToProperty(PeriodMasterStr);
Kernel::Property *periodSlaveProperty = getPointerToProperty(PeriodSlaveStr);
Kernel::Property *phaseSlaveProperty = getPointerToProperty(PhaseSlaveStr);
double periodMaster;
double periodSlave;
double phaseSlave;
if (periodMasterProperty->isDefault() || periodSlaveProperty->isDefault() ||
phaseSlaveProperty->isDefault()) {
if (!periodMasterProperty->isDefault() ||
!periodSlaveProperty->isDefault() || !phaseSlaveProperty->isDefault()) {
throw std::invalid_argument("Please specify PeriodMaster, PeriodSlave "
"and PhaseSlave or none of them.");
}
// if values have not been specified in loader then use values from hdf file
periodMaster = instrumentInfo.period_master;
periodSlave = instrumentInfo.period_slave;
phaseSlave = instrumentInfo.phase_slave;
} else {
periodMaster = getProperty(PeriodMasterStr);
periodSlave = getProperty(PeriodSlaveStr);
phaseSlave = getProperty(PhaseSlaveStr);
if ((periodMaster < 0.0) || (periodSlave < 0.0))
throw std::invalid_argument(
"Please specify a positive value for PeriodMaster and PeriodSlave.");
}
double period = periodSlave;
double shift = -1.0 / 6.0 * periodMaster - periodSlave * phaseSlave / 360.0;
// count total events per pixel to reserve necessary memory
ANSTO::EventCounter eventCounter(
roi, HISTO_BINS_Y, period, shift, tofMinBoundary, tofMaxBoundary,
timeMinBoundary, timeMaxBoundary, eventCounts);
loadEvents(prog, "loading neutron counts", tarFile, eventCounter);
// prepare event storage
ANSTO::ProgressTracker progTracker(prog, "creating neutron event lists",
numberHistograms, Progress_ReserveMemory);
for (size_t i = 0; i != numberHistograms; ++i) {
DataObjects::EventList &eventList = eventWS->getEventList(i);
eventList.setSortOrder(DataObjects::PULSETIME_SORT);
eventList.reserve(eventCounts[i]);
eventList.setDetectorID(static_cast<detid_t>(i));
eventList.setSpectrumNo(static_cast<detid_t>(i));
DataObjects::getEventsFrom(eventList, eventVectors[i]);
progTracker.update(i);
}
progTracker.complete();
ANSTO::EventAssigner eventAssigner(
roi, HISTO_BINS_Y, period, shift, tofMinBoundary, tofMaxBoundary,
timeMinBoundary, timeMaxBoundary, eventVectors);
loadEvents(prog, "loading neutron events", tarFile, eventAssigner);
Kernel::cow_ptr<MantidVec> axis;
MantidVec &xRef = axis.access();
xRef.resize(2, 0.0);
xRef[0] = std::max(
0.0,
floor(eventCounter.tofMin())); // just to make sure the bins hold it all
xRef[1] = eventCounter.tofMax() + 1;
eventWS->setAllX(axis);
// count total number of masked bins
size_t maskedBins = 0;
for (size_t i = 0; i != roi.size(); i++)
if (!roi[i])
maskedBins++;
if (maskedBins > 0) {
// create list of masked bins
std::vector<size_t> maskIndexList(maskedBins);
size_t maskIndex = 0;
for (size_t i = 0; i != roi.size(); i++)
if (!roi[i])
maskIndexList[maskIndex++] = i;
API::IAlgorithm_sptr maskingAlg = createChildAlgorithm("MaskDetectors");
maskingAlg->setProperty("Workspace", eventWS);
maskingAlg->setProperty("WorkspaceIndexList", maskIndexList);
maskingAlg->executeAsChildAlg();
}
// set log values
API::LogManager &logManager = eventWS->mutableRun();
logManager.addProperty("filename", filename);
logManager.addProperty("att_pos", static_cast<int>(instrumentInfo.att_pos));
logManager.addProperty("frame_count",
static_cast<int>(eventCounter.numFrames()));
logManager.addProperty("period", period);
// currently beam monitor counts are not available, instead number of frames
// times period is used
logManager.addProperty(
"bm_counts", static_cast<double>(eventCounter.numFrames()) * period /
1.0e6); // static_cast<double>(instrumentInfo.bm_counts)
// currently
Kernel::time_duration duration =
boost::posix_time::microseconds(static_cast<boost::int64_t>(
static_cast<double>(eventCounter.numFrames()) * period));
Kernel::DateAndTime start_time("2000-01-01T00:00:00");
Kernel::DateAndTime end_time(start_time + duration);
logManager.addProperty("start_time", start_time.toISO8601String());
logManager.addProperty("end_time", end_time.toISO8601String());
std::string time_str = start_time.toISO8601String();
AddSinglePointTimeSeriesProperty(logManager, time_str, "L1_chopper_value",
instrumentInfo.L1_chopper_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_det_value",
instrumentInfo.L2_det_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtainl_value",
instrumentInfo.L2_curtainl_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtainr_value",
instrumentInfo.L2_curtainr_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtainu_value",
instrumentInfo.L2_curtainu_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "L2_curtaind_value",
instrumentInfo.L2_curtaind_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "D_det_value",
instrumentInfo.D_det_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtainl_value",
instrumentInfo.D_curtainl_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtainr_value",
instrumentInfo.D_curtainr_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtainu_value",
instrumentInfo.D_curtainu_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "D_curtaind_value",
instrumentInfo.D_curtaind_value);
AddSinglePointTimeSeriesProperty(logManager, time_str, "curtain_rotation",
10.0);
API::IAlgorithm_sptr loadInstrumentAlg =
createChildAlgorithm("LoadInstrument");
loadInstrumentAlg->setProperty("Workspace", eventWS);
loadInstrumentAlg->setPropertyValue("InstrumentName", "BILBY");
loadInstrumentAlg->setProperty("RewriteSpectraMap",
Mantid::Kernel::OptionalBool(false));
loadInstrumentAlg->executeAsChildAlg();
setProperty("OutputWorkspace", eventWS);
}
