/**
* Outputs message to log if the detector at the given index is not a monitor in
*both input workspaces.
*
* @param sampleWS :: the input sample workspace
* @param directWS :: the input direct workspace
* @param index :: the index of the detector to checked
*/
void CalculateTransmission::logIfNotMonitor(API::MatrixWorkspace_sptr sampleWS,
API::MatrixWorkspace_sptr directWS,
size_t index) {
const std::string message = "The detector at index " +
boost::lexical_cast<std::string>(index) +
" is not a monitor in the ";
if (!sampleWS->getDetector(index)->isMonitor())
g_log.information(message + "sample workspace.");
if (!directWS->getDetector(index)->isMonitor())
g_log.information(message + "direct workspace.");
}
void FindDetectorsPar::populate_values_from_file(
const API::MatrixWorkspace_sptr &inputWS) {
size_t nHist = inputWS->getNumberHistograms();
if (this->current_ASCII_file.Type == PAR_type) {
// in this case data in azimuthal width and polar width are in fact real
// sizes in meters; have to transform it in into angular values
for (size_t i = 0; i < nHist; i++) {
azimuthalWidth[i] =
atan2(azimuthalWidth[i], secondaryFlightpath[i]) * rad2deg;
polarWidth[i] = atan2(polarWidth[i], secondaryFlightpath[i]) * rad2deg;
}
m_SizesAreLinear = false;
} else {
Geometry::IComponent_const_sptr sample =
inputWS->getInstrument()->getSample();
secondaryFlightpath.resize(nHist);
// Loop over the spectra
for (size_t i = 0; i < nHist; i++) {
Geometry::IDetector_const_sptr spDet;
try {
spDet = inputWS->getDetector(i);
} catch (Kernel::Exception::NotFoundError &) {
continue;
}
// Check that we aren't writing a monitor...
if (spDet->isMonitor())
continue;
/// this is the only value, which is not defined in phx file, so we
/// calculate it
secondaryFlightpath[i] = spDet->getDistance(*sample);
}
}
}
/** Converts X axis to theta representation
* @param progress :: Progress indicator
* @param targetUnit :: Target conversion unit
* @param inputWS :: Input Workspace
* @param nHist :: Stores the number of histograms
*/
void ConvertSpectrumAxis2::createThetaMap(API::Progress &progress,
const std::string &targetUnit,
API::MatrixWorkspace_sptr &inputWS,
size_t nHist) {
// Set up binding to member funtion. Avoids condition as part of loop over
// nHistograms.
boost::function<double(const IDetector &)> thetaFunction;
if (targetUnit.compare("signed_theta") == 0 ||
targetUnit.compare("SignedTheta") == 0) {
thetaFunction =
boost::bind(&MatrixWorkspace::detectorSignedTwoTheta, inputWS, _1);
} else if (targetUnit == "theta" || targetUnit == "Theta") {
thetaFunction =
boost::bind(&MatrixWorkspace::detectorTwoTheta, inputWS, _1);
}
bool warningGiven = false;
for (size_t i = 0; i < nHist; ++i) {
try {
IDetector_const_sptr det = inputWS->getDetector(i);
// Invoke relevant member function.
m_indexMap.emplace(thetaFunction(*det) * rad2deg, i);
} catch (Exception::NotFoundError &) {
if (!warningGiven)
g_log.warning("The instrument definition is incomplete - spectra "
"dropped from output");
warningGiven = true;
}
progress.report("Converting to theta...");
}
}
double RadiusSum::getMinBinSizeForInstrument(API::MatrixWorkspace_sptr inWS) {
// Assumption made: the detectors are placed one after the other, so the
// minimum
// reasonalbe size for the bin is the width of one detector.
double width;
size_t i = 0;
while (true) {
i++;
// this should never happen because it was done in
// getBoundariesOfInstrument,
// but it is here to avoid risk of infiniti loop
if (i >= inWS->getNumberHistograms())
throw std::invalid_argument(
"Did not find any non monitor detector position");
auto det = inWS->getDetector(i);
if (det->isMonitor())
continue;
Geometry::BoundingBox bbox;
det->getBoundingBox(bbox);
width = bbox.width().norm();
break;
}
return width;
}
double LoadHelper::getL2(const API::MatrixWorkspace_sptr& workspace, int detId)
{
// Get a pointer to the instrument contained in the workspace
Geometry::Instrument_const_sptr instrument = workspace->getInstrument();
// Get the distance between the source and the sample (assume in metres)
Geometry::IComponent_const_sptr sample = instrument->getSample();
// Get the sample-detector distance for this detector (in metres)
double l2 = workspace->getDetector(detId)->getPos().distance(sample->getPos());
return l2;
}
/** Extracts a single spectrum from a Workspace2D into a new workspaces. Uses CropWorkspace to do this.
* @param WS :: The workspace containing the spectrum to extract
* @param index :: The workspace index of the spectrum to extract
* @return A Workspace2D containing the extracted spectrum
*/
API::MatrixWorkspace_sptr CalculateTransmissionBeamSpreader::extractSpectrum(API::MatrixWorkspace_sptr WS, const size_t index)
{
// Check that given spectra are monitors
if ( !WS->getDetector(index)->isMonitor() )
{
g_log.information("The Incident Beam Monitor UDET provided is not marked as a monitor");
}
Algorithm_sptr childAlg = createSubAlgorithm("ExtractSingleSpectrum",0.0,0.4);
childAlg->setProperty<MatrixWorkspace_sptr>("InputWorkspace", WS);
childAlg->setProperty<int>("WorkspaceIndex", static_cast<int>(index));
childAlg->executeAsSubAlg();
return childAlg->getProperty("OutputWorkspace");
}
/**
* The main method to calculate the ring profile for workspaces based on
*instruments.
*
* It will iterate over all the spectrum inside the workspace.
* For each spectrum, it will use the RingProfile::getBinForPixel method to
*identify
* where, in the output_bins, the sum of all the spectrum values should be
*placed in.
*
* @param inputWS: pointer to the input workspace
* @param output_bins: the reference to the vector to be filled with the
*integration values
*/
void RingProfile::processInstrumentRingProfile(
const API::MatrixWorkspace_sptr inputWS, std::vector<double> &output_bins) {
for (int i = 0; i < static_cast<int>(inputWS->getNumberHistograms()); i++) {
m_progress->report("Computing ring bins positions for detectors");
// for the detector based, the positions will be taken from the detector
// itself.
try {
Mantid::Geometry::IDetector_const_sptr det = inputWS->getDetector(i);
// skip monitors
if (det->isMonitor()) {
continue;
}
// this part will be executed if the instrument is attached to the
// workspace
// get the bin position
int bin_n = getBinForPixel(det);
if (bin_n < 0) // -1 is the agreement for an invalid bin, or outside the
// ring being integrated
continue;
g_log.debug() << "Bin for the index " << i << " = " << bin_n
<< " Pos = " << det->getPos() << std::endl;
// get the reference to the spectrum
auto spectrum_pt = inputWS->getSpectrum(i);
const MantidVec &refY = spectrum_pt->dataY();
// accumulate the values of this spectrum inside this bin
for (size_t sp_ind = 0; sp_ind < inputWS->blocksize(); sp_ind++)
output_bins[bin_n] += refY[sp_ind];
} catch (Kernel::Exception::NotFoundError &ex) {
g_log.information() << "It found that detector for " << i
<< " is not valid. " << ex.what() << std::endl;
continue;
}
}
}
/** Convert X axis to Elastic Q representation
* @param progress :: Progress indicator
* @param targetUnit :: Target conversion unit
* @param inputWS :: Input workspace
* @param nHist :: Stores the number of histograms
*/
void ConvertSpectrumAxis2::createElasticQMap(API::Progress &progress,
const std::string &targetUnit,
API::MatrixWorkspace_sptr &inputWS,
size_t nHist) {
IComponent_const_sptr source = inputWS->getInstrument()->getSource();
IComponent_const_sptr sample = inputWS->getInstrument()->getSample();
const std::string emodeStr = getProperty("EMode");
int emode = 0;
if (emodeStr == "Direct")
emode = 1;
else if (emodeStr == "Indirect")
emode = 2;
for (size_t i = 0; i < nHist; i++) {
IDetector_const_sptr detector = inputWS->getDetector(i);
double twoTheta(0.0), efixed(0.0);
if (!detector->isMonitor()) {
twoTheta = 0.5 * inputWS->detectorTwoTheta(*detector);
efixed = getEfixed(detector, inputWS, emode); // get efixed
} else {
twoTheta = 0.0;
efixed = DBL_MIN;
}
// Convert to MomentumTransfer
double elasticQInAngstroms = Kernel::UnitConversion::run(twoTheta, efixed);
if (targetUnit == "ElasticQ") {
m_indexMap.emplace(elasticQInAngstroms, i);
} else if (targetUnit == "ElasticQSquared") {
// The QSquared value.
double elasticQSquaredInAngstroms =
elasticQInAngstroms * elasticQInAngstroms;
m_indexMap.emplace(elasticQSquaredInAngstroms, i);
}
progress.report("Converting to Elastic Q...");
}
}
/**
* Validation of the inputs of the RingProfile algorithm.
*
* Inside this method, the Workspace is considered an instrument based
*instrument. Each spectrum
* has a detector associated which has a position in the 3D space.
*
* The main validation are:
* - the centre of the ring is inside the image it self.
* - The minimum ring is smaller than the limits of the image to allow
*
* @param inputWS: the input workspace
*/
void RingProfile::checkInputsForSpectraWorkspace(
const API::MatrixWorkspace_sptr inputWS) {
try {
// finding the limits of the instrument
double first_x, first_y, first_z;
size_t i = 0;
while (true) {
i++;
if (i >= inputWS->getNumberHistograms())
throw std::invalid_argument(
"Did not find any non monitor detector position");
auto det = inputWS->getDetector(i);
if (det->isMonitor())
continue;
first_x = det->getPos().X();
first_y = det->getPos().Y();
first_z = det->getPos().Z();
break;
}
double last_x, last_y, last_z;
i = inputWS->getNumberHistograms() - 1;
while (true) {
i--;
if (i == 0)
throw std::invalid_argument(
"There is no region defined for the instrument of this workspace");
auto det = inputWS->getDetector(i);
if (det->isMonitor())
continue;
last_x = det->getPos().X();
last_y = det->getPos().Y();
last_z = det->getPos().Z();
break;
}
double xMax, yMax, zMax;
double xMin, yMin, zMin;
xMax = std::max(first_x, last_x);
yMax = std::max(first_y, last_y);
zMax = std::max(first_z, last_z);
xMin = std::min(first_x, last_x);
yMin = std::min(first_y, last_y);
zMin = std::min(first_z, last_z);
std::stringstream limits_s;
limits_s << "([" << xMin << ", " << xMax << "], [" << yMin << ", " << yMax
<< "], [" << zMin << ", " << zMax << "])";
g_log.debug() << "The limits for the instrument is : " << limits_s.str()
<< std::endl;
int xOutside = 0, yOutside = 0, zOutside = 0;
if (centre_x < xMin || centre_x > xMax)
xOutside = 1;
if (centre_y < yMin || centre_y > yMax)
yOutside = 1;
if (centre_z < zMin || centre_z > zMax)
zOutside = 1;
int summed = xOutside + yOutside + zOutside;
// if at least 2 are outside, the centre is considered outside the box.
if (summed >= 2) {
std::stringstream s;
s << "The defined centre (" << centre_x << ", " << centre_y << ", "
<< centre_z
<< ") is outside the limits of the detectors inside this instrument: "
<< limits_s.str();
throw std::invalid_argument(s.str());
}
xOutside = yOutside = zOutside = 0;
if (centre_x - min_radius > xMax || centre_x + min_radius < xMin)
xOutside = 1;
if (centre_y - min_radius > yMax || centre_y + min_radius < yMin)
yOutside = 1;
if (centre_z - min_radius > zMax || centre_z + min_radius < zMin)
zOutside = 1;
summed = xOutside + yOutside + zOutside;
if (summed >= 2) {
std::stringstream s;
s << "The defined minRadius make the inner ring outside the limits of "
"the detectors inside this instrument: " << limits_s.str();
throw std::invalid_argument(s.str());
}
} catch (Kernel::Exception::NotFoundError &) {
throw std::invalid_argument("Invalid input workspace. This workspace does "
"not has detectors to get the positions "
"from. ");
}
}
/** Convert the workspace units using TOF as an intermediate step in the
* conversion
* @param fromUnit :: The unit of the input workspace
* @param outputWS :: The output workspace
*/
void ConvertUnitsUsingDetectorTable::convertViaTOF(
Kernel::Unit_const_sptr fromUnit, API::MatrixWorkspace_sptr outputWS) {
using namespace Geometry;
// Let's see if we are using a TableWorkspace to override parameters
TableWorkspace_sptr paramWS = getProperty("DetectorParameters");
// See if we have supplied a DetectorParameters Workspace
// TODO: Check if paramWS is NULL and if so throw an exception
// const std::string l1ColumnLabel("l1");
// Let's check all the columns exist and are readable
try {
auto spectraColumnTmp = paramWS->getColumn("spectra");
auto l1ColumnTmp = paramWS->getColumn("l1");
auto l2ColumnTmp = paramWS->getColumn("l2");
auto twoThetaColumnTmp = paramWS->getColumn("twotheta");
auto efixedColumnTmp = paramWS->getColumn("efixed");
auto emodeColumnTmp = paramWS->getColumn("emode");
} catch (...) {
throw Exception::InstrumentDefinitionError(
"DetectorParameter TableWorkspace is not defined correctly.");
}
// Now let's read them into some vectors.
auto l1Column = paramWS->getColVector<double>("l1");
auto l2Column = paramWS->getColVector<double>("l2");
auto twoThetaColumn = paramWS->getColVector<double>("twotheta");
auto efixedColumn = paramWS->getColVector<double>("efixed");
auto emodeColumn = paramWS->getColVector<int>("emode");
auto spectraColumn = paramWS->getColVector<int>("spectra");
EventWorkspace_sptr eventWS =
boost::dynamic_pointer_cast<EventWorkspace>(outputWS);
assert(static_cast<bool>(eventWS) == m_inputEvents); // Sanity check
Progress prog(this, 0.2, 1.0, m_numberOfSpectra);
int64_t numberOfSpectra_i =
static_cast<int64_t>(m_numberOfSpectra); // cast to make openmp happy
// Get the unit object for each workspace
Kernel::Unit_const_sptr outputUnit = outputWS->getAxis(0)->unit();
std::vector<double> emptyVec;
int failedDetectorCount = 0;
// ConstColumnVector<int> spectraNumber = paramWS->getVector("spectra");
// TODO: Check why this parallel stuff breaks
// Loop over the histograms (detector spectra)
// PARALLEL_FOR1(outputWS)
for (int64_t i = 0; i < numberOfSpectra_i; ++i) {
// Lets find what row this spectrum ID appears in our detector table.
// PARALLEL_START_INTERUPT_REGION
std::size_t wsid = i;
try {
double deg2rad = M_PI / 180.;
auto det = outputWS->getDetector(i);
int specid = det->getID();
// int spectraNumber = static_cast<int>(spectraColumn->toDouble(i));
// wsid = outputWS->getIndexFromSpectrumNumber(spectraNumber);
g_log.debug() << "###### Spectra #" << specid
<< " ==> Workspace ID:" << wsid << std::endl;
// Now we need to find the row that contains this spectrum
std::vector<int>::iterator specIter;
specIter = std::find(spectraColumn.begin(), spectraColumn.end(), specid);
if (specIter != spectraColumn.end()) {
size_t detectorRow = std::distance(spectraColumn.begin(), specIter);
double l1 = l1Column[detectorRow];
double l2 = l2Column[detectorRow];
double twoTheta = twoThetaColumn[detectorRow] * deg2rad;
double efixed = efixedColumn[detectorRow];
int emode = emodeColumn[detectorRow];
g_log.debug() << "specId from detector table = "
<< spectraColumn[detectorRow] << std::endl;
// l1 = l1Column->toDouble(detectorRow);
// l2 = l2Column->toDouble(detectorRow);
// twoTheta = deg2rad * twoThetaColumn->toDouble(detectorRow);
// efixed = efixedColumn->toDouble(detectorRow);
// emode = static_cast<int>(emodeColumn->toDouble(detectorRow));
g_log.debug() << "###### Spectra #" << specid
<< " ==> Det Table Row:" << detectorRow << std::endl;
g_log.debug() << "\tL1=" << l1 << ",L2=" << l2 << ",TT=" << twoTheta
<< ",EF=" << efixed << ",EM=" << emode << std::endl;
// Make local copies of the units. This allows running the loop in
// parallel
Unit *localFromUnit = fromUnit->clone();
Unit *localOutputUnit = outputUnit->clone();
/// @todo Don't yet consider hold-off (delta)
const double delta = 0.0;
// Convert the input unit to time-of-flight
localFromUnit->toTOF(outputWS->dataX(wsid), emptyVec, l1, l2, twoTheta,
emode, efixed, delta);
// Convert from time-of-flight to the desired unit
localOutputUnit->fromTOF(outputWS->dataX(wsid), emptyVec, l1, l2,
twoTheta, emode, efixed, delta);
// EventWorkspace part, modifying the EventLists.
if (m_inputEvents) {
eventWS->getEventList(wsid)
.convertUnitsViaTof(localFromUnit, localOutputUnit);
}
// Clear unit memory
delete localFromUnit;
delete localOutputUnit;
} else {
// Not found
g_log.debug() << "Spectrum " << specid << " not found!" << std::endl;
failedDetectorCount++;
outputWS->maskWorkspaceIndex(wsid);
}
} catch (Exception::NotFoundError &) {
// Get to here if exception thrown when calculating distance to detector
failedDetectorCount++;
// Since you usually (always?) get to here when there's no attached
// detectors, this call is
// the same as just zeroing out the data (calling clearData on the
// spectrum)
outputWS->maskWorkspaceIndex(i);
}
prog.report("Convert to " + m_outputUnit->unitID());
// PARALLEL_END_INTERUPT_REGION
} // loop over spectra
// PARALLEL_CHECK_INTERUPT_REGION
if (failedDetectorCount != 0) {
g_log.information() << "Something went wrong for " << failedDetectorCount
<< " spectra. Masking spectrum." << std::endl;
}
if (m_inputEvents)
eventWS->clearMRU();
}
/** Assuming that the workspace has an instrument associated with it from which
*the pixel positions has to be taken,
* this function extracts the position of the first and last valid pixel
*(detector) and return a list of values
* giving the boundaries of the instrument.
*
* @param inWS Input Workspace
* @return a list of values that defines the limits of the image in this order:
*Xmin, Xmax, Ymin, Ymax, Zmin, Zmax
*/
std::vector<double>
RadiusSum::getBoundariesOfInstrument(API::MatrixWorkspace_sptr inWS) {
// This function is implemented based in the following assumption:
// - The workspace is composed by spectrum with associated spectrum No which
// is associated to one detector or monitor
// - The first spectrum No (non monitor) is associated with one detector
// while the last spectrum No (non monitor)
// is associated with one detector.
// - They are in complete oposite direction.
//
// Consider the following 'image' (where the ID is the number and the
// position is where it is displayed)
//
// 1 2 3
// 4 5 6
// 7 8 9
// 10 11 12
//
// In this image, the assumption is true, because, we can derive the
// boundaries of the image looking just to the
// ids 1 and 12.
//
// But the following image:
//
// 1 2 3 6 5 4
// 6 5 4 1 2 3
// 7 8 9 12 11 10
// 12 11 12 7 8 9
//
// Although valid 'IDF' instrument, fail the assumption, and will return
// wrong values.
// Bear in mind these words if you face problems with the return of the
// boundaries of one instrument
//
double first_x, first_y, first_z;
size_t i = 0;
while (true) {
i++;
if (i >= inWS->getNumberHistograms())
throw std::invalid_argument("Did not find any non monitor detector. "
"Failed to identify the boundaries of this "
"instrument.");
auto det = inWS->getDetector(i);
if (det->isMonitor())
continue;
// get the position of the first valid (non-monitor) detector.
first_x = det->getPos().X();
first_y = det->getPos().Y();
first_z = det->getPos().Z();
break;
}
double last_x, last_y, last_z;
i = inWS->getNumberHistograms() - 1;
while (true) {
i--;
if (i == 0)
throw std::invalid_argument("There is no region defined for the "
"instrument of this workspace. Failed to "
"identify the boundaries of this instrument");
auto det = inWS->getDetector(i);
if (det->isMonitor())
continue;
// get the last valid detector position
last_x = det->getPos().X();
last_y = det->getPos().Y();
last_z = det->getPos().Z();
break;
}
// order the values
double xMax, yMax, zMax;
double xMin, yMin, zMin;
xMax = std::max(first_x, last_x);
yMax = std::max(first_y, last_y);
zMax = std::max(first_z, last_z);
xMin = std::min(first_x, last_x);
yMin = std::min(first_y, last_y);
zMin = std::min(first_z, last_z);
std::vector<double> output(6); // output = {xMin, xMax, yMin, yMax, zMin,
// zMax }; not supported in all compilers
output[0] = xMin;
output[1] = xMax;
output[2] = yMin;
output[3] = yMax;
output[4] = zMin;
output[5] = zMax;
return output;
}
