void CalculateDIFC::calculate() {
Instrument_const_sptr instrument = m_inputWS->getInstrument();
SpecialWorkspace2D_sptr localWS =
boost::dynamic_pointer_cast<SpecialWorkspace2D>(m_outputWS);
double l1;
Kernel::V3D beamline, samplePos;
double beamline_norm;
instrument->getInstrumentParameters(l1, beamline, beamline_norm, samplePos);
// To get all the detector ID's
detid2det_map allDetectors;
instrument->getDetectors(allDetectors);
// Now go through all
detid2det_map::const_iterator it = allDetectors.begin();
for (; it != allDetectors.end(); ++it) {
Geometry::IDetector_const_sptr det = it->second;
if ((!det->isMasked()) && (!det->isMonitor())) {
const detid_t detID = it->first;
double offset = 0.;
if (m_offsetsWS)
offset = m_offsetsWS->getValue(detID, 0.);
double difc = Geometry::Instrument::calcConversion(
l1, beamline, beamline_norm, samplePos, det, offset);
difc = 1. / difc; // calcConversion gives 1/DIFC
localWS->setValue(detID, difc);
}
}
}
/**
* Make a map of the conversion factors between tof and D-spacing
* for all pixel IDs in a workspace.
*
* @param DFileName name of dspacemap file
* @param offsetsWS :: OffsetsWorkspace with instrument and offsets
*/
void SaveDspacemap::CalculateDspaceFromCal(Mantid::DataObjects::OffsetsWorkspace_sptr offsetsWS,
std::string DFileName)
{
const char * filename = DFileName.c_str();
// Get a pointer to the instrument contained in the workspace
Instrument_const_sptr instrument = offsetsWS->getInstrument();
double l1;
Kernel::V3D beamline,samplePos;
double beamline_norm;
instrument->getInstrumentParameters(l1,beamline,beamline_norm, samplePos);
//To get all the detector ID's
detid2det_map allDetectors;
instrument->getDetectors(allDetectors);
detid2det_map::const_iterator it;
detid_t maxdetID = 0;
for (it = allDetectors.begin(); it != allDetectors.end(); it++)
{
detid_t detectorID = it->first;
if(detectorID > maxdetID) maxdetID = detectorID;
}
detid_t paddetID = detid_t(getProperty("PadDetID"));
if (maxdetID < paddetID)maxdetID = paddetID;
// Now write the POWGEN-style Dspace mapping file
std::ofstream fout(filename, std::ios_base::out|std::ios_base::binary);
Progress prog(this,0.0,1.0,maxdetID);
for (detid_t i = 0; i != maxdetID; i++)
{
//Compute the factor
double factor;
Geometry::IDetector_const_sptr det;
// Find the detector with that detector id
it = allDetectors.find(i);
if (it != allDetectors.end())
{
det = it->second;
factor = Instrument::calcConversion(l1, beamline, beamline_norm, samplePos, det, offsetsWS->getValue(i, 0.0));
//Factor of 10 between ISAW and Mantid
factor *= 0.1 ;
if(factor<0)factor = 0.0;
fout.write( reinterpret_cast<char*>( &factor ), sizeof(double) );
}
else
{
factor = 0;
fout.write( reinterpret_cast<char*>( &factor ), sizeof(double) );
}
//Report progress
prog.report();
}
fout.close();
}
/**
* Make a map of the conversion factors between tof and D-spacing
* for all pixel IDs in a workspace.
*
* @param DFileName :: name of dspacemap file
* @param offsetsWS :: OffsetsWorkspace to be filled.
*/
void LoadDspacemap::CalculateOffsetsFromDSpacemapFile(
const std::string DFileName,
Mantid::DataObjects::OffsetsWorkspace_sptr offsetsWS) {
// Get a pointer to the instrument contained in the workspace
Instrument_const_sptr instrument = offsetsWS->getInstrument();
double l1;
Kernel::V3D beamline, samplePos;
double beamline_norm;
instrument->getInstrumentParameters(l1, beamline, beamline_norm, samplePos);
// To get all the detector ID's
detid2det_map allDetectors;
instrument->getDetectors(allDetectors);
// Read in the POWGEN-style Dspace mapping file
const char *filename = DFileName.c_str();
std::ifstream fin(filename, std::ios_base::in | std::ios_base::binary);
std::vector<double> dspace;
double read;
while (!fin.eof()) {
fin.read(reinterpret_cast<char *>(&read), sizeof read);
// Factor of 10 between ISAW and Mantid
read *= 10.;
dspace.push_back(read);
}
detid2det_map::const_iterator it;
for (it = allDetectors.begin(); it != allDetectors.end(); ++it) {
detid_t detectorID = it->first;
Geometry::IDetector_const_sptr det = it->second;
// Compute the factor
double offset = 0.0;
double factor = Instrument::calcConversion(l1, beamline, beamline_norm,
samplePos, det, offset);
offset = dspace[detectorID] / factor - 1.0;
// Save in the map
try {
offsetsWS->setValue(detectorID, offset);
} catch (std::invalid_argument &) {
}
}
}
/** Reads the calibration file.
*
* @param calFileName :: path to the old .cal file
* @param groupWS :: optional, GroupingWorkspace to save. Will be 0 if not specified.
* @param offsetsWS :: optional, OffsetsWorkspace to save. Will be 0.0 if not specified.
* @param maskWS :: optional, masking-type workspace to save. Will be 1 (selected) if not specified.
*/
void SaveCalFile::saveCalFile(const std::string& calFileName,
GroupingWorkspace_sptr groupWS, OffsetsWorkspace_sptr offsetsWS, MaskWorkspace_sptr maskWS)
{
Instrument_const_sptr inst;
bool doGroup = false;
if (groupWS)
{
doGroup = true;
inst = groupWS->getInstrument();
}
bool doOffsets = false;
if (offsetsWS) {
doOffsets = true;
inst = offsetsWS->getInstrument();
}
bool doMask = false;
if (maskWS)
{
doMask = true;
inst = maskWS->getInstrument();
if (!inst)
g_log.warning() << "Mask workspace " << maskWS->name() << " has no instrument associated with." << "\n";
}
g_log.information() << "Status: doGroup = " << doGroup << " doOffsets = " << doOffsets
<< " doMask = " << doMask << "\n";
if (!inst)
throw std::invalid_argument("You must give at least one of the grouping, offsets or masking workspaces.");
// Header of the file
std::ofstream fout(calFileName.c_str());
fout <<"# Calibration file for instrument " << inst->getName() << " written on "
<< DateAndTime::getCurrentTime().toISO8601String() << ".\n";
fout <<"# Format: number UDET offset select group\n";
// Get all the detectors
detid2det_map allDetectors;
inst->getDetectors(allDetectors);
int64_t number=0;
detid2det_map::const_iterator it;
for (it = allDetectors.begin(); it != allDetectors.end(); ++it)
{
detid_t detectorID = it->first;
// Geometry::IDetector_const_sptr det = it->second;
//Find the offset, if any
double offset = 0.0;
if (doOffsets)
offset = offsetsWS->getValue(detectorID, 0.0);
//Find the group, if any
int64_t group = 1;
if (doGroup)
group = static_cast<int64_t>(groupWS->getValue(detectorID, 0.0));
// Find the selection, if any
int selected = 1;
if (doMask && (maskWS->isMasked(detectorID)))
selected = 0;
//if(group > 0)
fout << std::fixed << std::setw(9) << number <<
std::fixed << std::setw(15) << detectorID <<
std::fixed << std::setprecision(7) << std::setw(15)<< offset <<
std::fixed << std::setw(8) << selected <<
std::fixed << std::setw(8) << group << "\n";
number++;
}
}
/**
* Make a map of the conversion factors between tof and D-spacing
* for all pixel IDs in a workspace.
* map vulcan should contain the module/module and stack/stack offset
*
* @param vulcan :: map between detector ID and vulcan correction factor.
* @param offsetsWS :: OffsetsWorkspace to be filled.
*/
void LoadDspacemap::CalculateOffsetsFromVulcanFactors(
std::map<detid_t, double> &vulcan,
Mantid::DataObjects::OffsetsWorkspace_sptr offsetsWS) {
// Get a pointer to the instrument contained in the workspace
// At this point, instrument VULCAN has been created?
Instrument_const_sptr instrument = offsetsWS->getInstrument();
g_log.notice() << "Name of instrument = " << instrument->getName()
<< std::endl;
g_log.notice() << "Input map (dict): size = " << vulcan.size() << std::endl;
// To get all the detector ID's
detid2det_map allDetectors;
instrument->getDetectors(allDetectors);
detid2det_map::const_iterator it;
int numfinds = 0;
g_log.notice() << "Input number of detectors = " << allDetectors.size()
<< std::endl;
// Get detector information
double l1, beamline_norm;
Kernel::V3D beamline, samplePos;
instrument->getInstrumentParameters(l1, beamline, beamline_norm, samplePos);
/*** A survey of parent detector
std::map<detid_t, bool> parents;
for (it = allDetectors.begin(); it != allDetectors.end(); it++){
int32_t detid = it->first;
// def boost::shared_ptr<const Mantid::Geometry::IDetector>
IDetector_const_sptr;
std::string parentname =
it->second->getParent()->getComponentID()->getName();
g_log.notice() << "Name = " << parentname << std::endl;
// parents.insert(parentid, true);
}
***/
/*** Here some special configuration for VULCAN is hard-coded here!
* Including (1) Super-Parent Information
***/
Kernel::V3D referencePos;
detid_t anydetinrefmodule = 21 * 1250 + 5;
std::map<detid_t, Geometry::IDetector_const_sptr>::iterator det_iter =
allDetectors.find(anydetinrefmodule);
if (det_iter == allDetectors.end()) {
throw std::invalid_argument("Any Detector ID is Instrument's detector");
}
referencePos = det_iter->second->getParent()->getPos();
double refl2 = referencePos.norm();
double halfcosTwoThetaRef =
referencePos.scalar_prod(beamline) / (refl2 * beamline_norm);
double sinThetaRef = sqrt(0.5 - halfcosTwoThetaRef);
double difcRef = sinThetaRef * (l1 + refl2) / CONSTANT;
// Loop over all detectors in instrument to find the offset
for (it = allDetectors.begin(); it != allDetectors.end(); ++it) {
int detectorID = it->first;
Geometry::IDetector_const_sptr det = it->second;
double offset = 0.0;
// Find the vulcan factor;
double vulcan_factor = 0.0;
std::map<detid_t, double>::const_iterator vulcan_iter =
vulcan.find(detectorID);
if (vulcan_iter != vulcan.end()) {
vulcan_factor = vulcan_iter->second;
numfinds++;
}
// g_log.notice() << "Selected Detector with ID = " << detectorID << " ID2
// = " << id2 << std::endl; proved to be same
double intermoduleoffset = 0;
double interstackoffset = 0;
detid_t intermoduleid = detid_t(detectorID / 1250) * 1250 + 1250 - 2;
vulcan_iter = vulcan.find(intermoduleid);
if (vulcan_iter == vulcan.end()) {
g_log.error() << "Cannot find inter-module offset ID = " << intermoduleid
<< std::endl;
} else {
intermoduleoffset = vulcan_iter->second;
}
detid_t interstackid = detid_t(detectorID / 1250) * 1250 + 1250 - 1;
vulcan_iter = vulcan.find(interstackid);
if (vulcan_iter == vulcan.end()) {
g_log.error() << "Cannot find inter-module offset ID = " << intermoduleid
<< std::endl;
} else {
interstackoffset = vulcan_iter->second;
}
/*** This is the previous way to correct upon DIFC[module center pixel]
// The actual factor is 10^(-value_in_the_file)
vulcan_factor = pow(10.0,-vulcan_factor);
// At this point, tof_corrected = vulcan_factor * tof_input
// So this is the offset
offset = vulcan_factor - 1.0;
***/
/*** New approach to correct based on DIFC of each pixel
* Equation: offset = DIFC^(pixel)/DIFC^(parent)*(1+vulcan_offset)-1
* offset should be close to 0
***/
// 1. calculate DIFC
Kernel::V3D detPos;
detPos = det->getPos();
// Now detPos will be set with respect to samplePos
detPos -= samplePos;
double l2 = detPos.norm();
double halfcosTwoTheta =
detPos.scalar_prod(beamline) / (l2 * beamline_norm);
double sinTheta = sqrt(0.5 - halfcosTwoTheta);
double difc_pixel = sinTheta * (l1 + l2) / CONSTANT;
// Kernel::V3D parentPos = det->getParent()->getPos();
// parentPos -= samplePos;
// double l2parent = parentPos.norm();
// double halfcosTwoThetaParent = parentPos.scalar_prod(beamline)/(l2 *
// beamline_norm);
// double sinThetaParent = sqrt(0.5 - halfcosTwoThetaParent);
// double difc_parent = sinThetaParent*(l1+l2parent)/CONSTANT;
/*** Offset Replicate Previous Result
offset = difc_pixel/difc_parent*(pow(10.0, -vulcan_factor))-1.0;
***/
offset =
difc_pixel / difcRef * (pow(10.0, -(vulcan_factor + intermoduleoffset +
interstackoffset))) -
1.0;
// Save in the map
try {
offsetsWS->setValue(detectorID, offset);
if (intermoduleid != 27498 && intermoduleid != 28748 &&
intermoduleid != 29998 && intermoduleid != 33748 &&
intermoduleid != 34998 && intermoduleid != 36248) {
g_log.error() << "Detector ID = " << detectorID
<< " Inter-Module ID = " << intermoduleid << std::endl;
throw std::invalid_argument("Indexing error!");
}
} catch (std::invalid_argument &) {
g_log.notice() << "Misses Detector ID = " << detectorID << std::endl;
}
} // for
g_log.notice() << "Number of matched detectors =" << numfinds << std::endl;
}
