/** Create output workspace
* @brief ConvertCWSDExpToMomentum::createExperimentMDWorkspace
* @return
*/
API::IMDEventWorkspace_sptr ConvertCWSDMDtoHKL::createHKLMDWorkspace(
const std::vector<Kernel::V3D> &vec_hkl,
const std::vector<signal_t> &vec_signal,
const std::vector<detid_t> &vec_detid) {
// Check
if (vec_hkl.size() != vec_signal.size() ||
vec_signal.size() != vec_detid.size())
throw std::invalid_argument("Input vectors for HKL, signal and detector "
"IDs are of different size!");
// Create workspace in Q_sample with dimenion as 3
size_t nDimension = 3;
IMDEventWorkspace_sptr mdws =
MDEventFactory::CreateMDWorkspace(nDimension, "MDEvent");
// Extract Dimensions and add to the output workspace.
std::vector<std::string> vec_ID(3);
vec_ID[0] = "H";
vec_ID[1] = "K";
vec_ID[2] = "L";
std::vector<std::string> dimensionNames(3);
dimensionNames[0] = "H";
dimensionNames[1] = "K";
dimensionNames[2] = "L";
Mantid::Kernel::SpecialCoordinateSystem coordinateSystem =
Mantid::Kernel::HKL;
// Add dimensions
std::vector<double> m_extentMins(3);
std::vector<double> m_extentMaxs(3);
std::vector<size_t> m_numBins(3, 100);
getRange(vec_hkl, m_extentMins, m_extentMaxs);
// Get MDFrame of HKL type with RLU
auto unitFactory = makeMDUnitFactoryChain();
auto unit = unitFactory->create(Units::Symbol::RLU.ascii());
Mantid::Geometry::HKL frame(unit);
for (size_t i = 0; i < nDimension; ++i) {
std::string id = vec_ID[i];
std::string name = dimensionNames[i];
// std::string units = "A^-1";
mdws->addDimension(
Geometry::MDHistoDimension_sptr(new Geometry::MDHistoDimension(
id, name, frame, static_cast<coord_t>(m_extentMins[i]),
static_cast<coord_t>(m_extentMaxs[i]), m_numBins[i])));
}
// Set coordinate system
mdws->setCoordinateSystem(coordinateSystem);
// Creates a new instance of the MDEventInserter to output workspace
MDEventWorkspace<MDEvent<3>, 3>::sptr mdws_mdevt_3 =
boost::dynamic_pointer_cast<MDEventWorkspace<MDEvent<3>, 3>>(mdws);
MDEventInserter<MDEventWorkspace<MDEvent<3>, 3>::sptr> inserter(mdws_mdevt_3);
// Go though each spectrum to conver to MDEvent
for (size_t iq = 0; iq < vec_hkl.size(); ++iq) {
Kernel::V3D hkl = vec_hkl[iq];
std::vector<Mantid::coord_t> millerindex(3);
millerindex[0] = static_cast<float>(hkl.X());
millerindex[1] = static_cast<float>(hkl.Y());
millerindex[2] = static_cast<float>(hkl.Z());
signal_t signal = vec_signal[iq];
signal_t error = std::sqrt(signal);
uint16_t runnumber = 1;
detid_t detid = vec_detid[iq];
// Insert
inserter.insertMDEvent(
static_cast<float>(signal), static_cast<float>(error * error),
static_cast<uint16_t>(runnumber), detid, millerindex.data());
}
return mdws;
}
/** Execute the algorithm.
*/
void ImportMDEventWorkspace::exec() {
std::string filename = getProperty("Filename");
std::ifstream file;
try {
file.open(filename.c_str(), std::ios::in);
} catch (std::ifstream::failure &e) {
g_log.error() << "Cannot open file: " << filename;
throw(e);
}
// Extract data from the file, excluding comment lines.
std::string line;
std::string lastLine;
size_t nActualColumns = 0;
while (std::getline(file, line)) {
boost::algorithm::trim(line);
if (std::string::npos == line.find_first_of(CommentLineStartFlag())) {
std::stringstream buffer(line);
std::copy(std::istream_iterator<std::string>(buffer),
std::istream_iterator<std::string>(),
std::back_inserter(m_file_data));
if (lastLine == MDEventBlockFlag()) {
std::vector<std::string> strVec;
boost::algorithm::split(strVec, line, boost::is_any_of("\t "),
boost::token_compress_on);
nActualColumns = strVec.size();
}
}
lastLine = line;
}
file.close();
// Check the file format.
quickFileCheck();
// Extract some well used posisions
m_posDimStart =
std::find(m_file_data.begin(), m_file_data.end(), DimensionBlockFlag());
m_posMDEventStart =
std::find(m_file_data.begin(), m_file_data.end(), MDEventBlockFlag());
// Calculate the dimensionality
int posDiffDims =
static_cast<int>(std::distance(m_posDimStart, m_posMDEventStart));
m_nDimensions = (posDiffDims - 1) / 4;
// Calculate the actual number of columns in the MDEvent data.
int posDiffMDEvent =
static_cast<int>(std::distance(m_posMDEventStart, m_file_data.end()));
const size_t columnsForFullEvents =
m_nDimensions + 4; // signal, error, run_no, detector_no
m_IsFullDataObjects = (nActualColumns == columnsForFullEvents);
if (0 == nActualColumns) {
m_nDataObjects = 0;
g_log.warning() << "The number of actual columns found in the file "
"(exlcuding comments) is zero" << std::endl;
} else {
m_nDataObjects = posDiffMDEvent / nActualColumns;
}
// Get the min and max extents in each dimension.
std::vector<double> extentMins(m_nDimensions);
std::vector<double> extentMaxs(m_nDimensions);
DataCollectionType::iterator mdEventEntriesIterator = m_posMDEventStart;
for (size_t i = 0; i < m_nDataObjects; ++i) {
mdEventEntriesIterator += 2;
if (m_IsFullDataObjects) {
mdEventEntriesIterator += 2;
}
for (size_t j = 0; j < m_nDimensions; ++j) {
double coord = convert<double>(*(++mdEventEntriesIterator));
extentMins[j] = coord < extentMins[j] ? coord : extentMins[j];
extentMaxs[j] = coord > extentMaxs[j] ? coord : extentMaxs[j];
}
}
// Create a target output workspace.
IMDEventWorkspace_sptr outWs = MDEventFactory::CreateMDWorkspace(
m_nDimensions, m_IsFullDataObjects ? "MDEvent" : "MDLeanEvent");
// Extract Dimensions and add to the output workspace.
DataCollectionType::iterator dimEntriesIterator = m_posDimStart;
auto unitFactory = makeMDUnitFactoryChain();
for (size_t i = 0; i < m_nDimensions; ++i) {
std::string id = convert<std::string>(*(++dimEntriesIterator));
std::string name = convert<std::string>(*(++dimEntriesIterator));
std::string units = convert<std::string>(*(++dimEntriesIterator));
int nbins = convert<int>(*(++dimEntriesIterator));
auto mdUnit = unitFactory->create(units);
Mantid::Geometry::GeneralFrame frame(
Mantid::Geometry::GeneralFrame::GeneralFrameName, std::move(mdUnit));
outWs->addDimension(MDHistoDimension_sptr(new MDHistoDimension(
id, name, frame, static_cast<coord_t>(extentMins[i]),
static_cast<coord_t>(extentMaxs[i]), nbins)));
}
CALL_MDEVENT_FUNCTION(this->addEventsData, outWs)
// set output
this->setProperty("OutputWorkspace", outWs);
}
