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Hahn, Steven authoredHahn, Steven authored
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DiffractionEventCalibrateDetectors.cpp 21.29 KiB
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidAlgorithms/DiffractionEventCalibrateDetectors.h"
#include "MantidAlgorithms/GSLFunctions.h"
#include "MantidAPI/FileProperty.h"
#include "MantidAPI/IFunction.h"
#include "MantidAPI/InstrumentValidator.h"
#include "MantidAPI/MatrixWorkspace.h"
#include "MantidAPI/TableRow.h"
#include "MantidAPI/TextAxis.h"
#include "MantidDataObjects/EventList.h"
#include "MantidDataObjects/EventWorkspace.h"
#include "MantidDataObjects/GroupingWorkspace.h"
#include "MantidDataObjects/Workspace2D.h"
#include "MantidGeometry/Instrument/RectangularDetector.h"
#include "MantidKernel/ArrayProperty.h"
#include "MantidKernel/CPUTimer.h"
#include "MantidKernel/Exception.h"
#include "MantidKernel/UnitFactory.h"
#include "MantidKernel/BoundedValidator.h"
#include <Poco/File.h>
#include <cmath>
#include <numeric>
#include <fstream>
#include <sstream>
namespace Mantid {
namespace Algorithms {
// Register the class into the algorithm factory
DECLARE_ALGORITHM(DiffractionEventCalibrateDetectors)
using namespace Kernel;
using namespace API;
using namespace Geometry;
using namespace DataObjects;
/**
* The gsl_costFunction is optimized by GSL simplex
* @param v :: vector containing center position and rotations
* @param params :: names of detector, workspace, and instrument
*/
static double gsl_costFunction(const gsl_vector *v, void *params) {
double x, y, z, rotx, roty, rotz;
std::string detname, inname, outname, peakOpt, rb_param, groupWSName;
std::string *p = reinterpret_cast<std::string *>(params);
detname = p[0];
inname = p[1];
outname = p[2];
peakOpt = p[3];
rb_param = p[4];
groupWSName = p[5];
x = gsl_vector_get(v, 0);
y = gsl_vector_get(v, 1);
z = gsl_vector_get(v, 2);
rotx = gsl_vector_get(v, 3);
roty = gsl_vector_get(v, 4);
rotz = gsl_vector_get(v, 5);
Mantid::Algorithms::DiffractionEventCalibrateDetectors u;
return u.intensity(x, y, z, rotx, roty, rotz, detname, inname, outname,
peakOpt, rb_param, groupWSName);
}
/**
* The movedetector function changes detector position and angles
* @param x :: The shift along the X-axis
* @param y :: The shift along the Y-axis * @param z :: The shift along the Z-axis
* @param rotx :: The rotation around the X-axis
* @param roty :: The rotation around the Y-axis
* @param rotz :: The rotation around the Z-axis
* @param detname :: The detector name
* @param inputW :: The workspace
*/
void DiffractionEventCalibrateDetectors::movedetector(
double x, double y, double z, double rotx, double roty, double rotz,
std::string detname, EventWorkspace_sptr inputW) {
IAlgorithm_sptr alg1 = createChildAlgorithm("MoveInstrumentComponent");
alg1->setProperty<EventWorkspace_sptr>("Workspace", inputW);
alg1->setPropertyValue("ComponentName", detname);
// Move in cm for small shifts
alg1->setProperty("X", x * 0.01);
alg1->setProperty("Y", y * 0.01);
alg1->setProperty("Z", z * 0.01);
alg1->setPropertyValue("RelativePosition", "1");
alg1->executeAsChildAlg();
IAlgorithm_sptr algx = createChildAlgorithm("RotateInstrumentComponent");
algx->setProperty<EventWorkspace_sptr>("Workspace", inputW);
algx->setPropertyValue("ComponentName", detname);
algx->setProperty("X", 1.0);
algx->setProperty("Y", 0.0);
algx->setProperty("Z", 0.0);
algx->setProperty("Angle", rotx);
algx->setPropertyValue("RelativeRotation", "1");
algx->executeAsChildAlg();
IAlgorithm_sptr algy = createChildAlgorithm("RotateInstrumentComponent");
algy->setProperty<EventWorkspace_sptr>("Workspace", inputW);
algy->setPropertyValue("ComponentName", detname);
algy->setProperty("X", 0.0);
algy->setProperty("Y", 1.0);
algy->setProperty("Z", 0.0);
algy->setProperty("Angle", roty);
algy->setPropertyValue("RelativeRotation", "1");
algy->executeAsChildAlg();
IAlgorithm_sptr algz = createChildAlgorithm("RotateInstrumentComponent");
algz->setProperty<EventWorkspace_sptr>("Workspace", inputW);
algz->setPropertyValue("ComponentName", detname);
algz->setProperty("X", 0.0);
algz->setProperty("Y", 0.0);
algz->setProperty("Z", 1.0);
algz->setProperty("Angle", rotz);
algz->setPropertyValue("RelativeRotation", "1");
algz->executeAsChildAlg();
}
/**
* The intensity function calculates the intensity as a function of detector
* position and angles
* @param x :: The shift along the X-axis
* @param y :: The shift along the Y-axis
* @param z :: The shift along the Z-axis
* @param rotx :: The rotation around the X-axis
* @param roty :: The rotation around the Y-axis
* @param rotz :: The rotation around the Z-axis
* @param detname :: The detector name
* @param inname :: The workspace name
* @param outname :: The workspace name
* @param peakOpt :: Location of optimized peak
* @param rb_param :: Bin boundary string
* @param groupWSName :: GroupingWorkspace for this detector only.
* */
double DiffractionEventCalibrateDetectors::intensity( double x, double y, double z, double rotx, double roty, double rotz,
std::string detname, std::string inname, std::string outname,
std::string peakOpt, std::string rb_param, std::string groupWSName) {
EventWorkspace_sptr inputW = boost::dynamic_pointer_cast<EventWorkspace>(
AnalysisDataService::Instance().retrieve(inname));
bool debug = true;
CPUTimer tim;
movedetector(x, y, z, rotx, roty, rotz, detname, inputW);
if (debug)
std::cout << tim << " to movedetector()\n";
IAlgorithm_sptr alg3 = createChildAlgorithm("ConvertUnits");
alg3->setProperty<EventWorkspace_sptr>("InputWorkspace", inputW);
alg3->setPropertyValue("OutputWorkspace", outname);
alg3->setPropertyValue("Target", "dSpacing");
alg3->executeAsChildAlg();
MatrixWorkspace_sptr outputW = alg3->getProperty("OutputWorkspace");
if (debug)
std::cout << tim << " to ConvertUnits\n";
IAlgorithm_sptr alg4 = createChildAlgorithm("DiffractionFocussing");
alg4->setProperty<MatrixWorkspace_sptr>("InputWorkspace", outputW);
alg4->setProperty<MatrixWorkspace_sptr>("OutputWorkspace", outputW);
alg4->setPropertyValue("GroupingFileName", "");
alg4->setPropertyValue("GroupingWorkspace", groupWSName);
alg4->executeAsChildAlg();
outputW = alg4->getProperty("OutputWorkspace");
// Remove file
if (debug)
std::cout << tim << " to DiffractionFocussing\n";
IAlgorithm_sptr alg5 = createChildAlgorithm("Rebin");
alg5->setProperty<MatrixWorkspace_sptr>("InputWorkspace", outputW);
alg5->setProperty<MatrixWorkspace_sptr>("OutputWorkspace", outputW);
alg5->setPropertyValue("Params", rb_param);
alg5->executeAsChildAlg();
outputW = alg5->getProperty("OutputWorkspace");
if (debug)
std::cout << tim << " to Rebin\n";
// Find point of peak centre
const MantidVec &yValues = outputW->readY(0);
auto it = std::max_element(yValues.begin(), yValues.end());
double peakHeight = *it;
if (peakHeight == 0)
return -0.000;
double peakLoc = outputW->readX(0)[it - yValues.begin()];
IAlgorithm_sptr fit_alg;
try {
// set the ChildAlgorithm no to log as this will be run once per spectra
fit_alg = createChildAlgorithm("Fit", -1, -1, false);
} catch (Exception::NotFoundError &) {
g_log.error("Can't locate Fit algorithm");
throw;
}
std::ostringstream fun_str;
fun_str << "name=Gaussian,Height=" << peakHeight
<< ",Sigma=0.01,PeakCentre=" << peakLoc;
fit_alg->setProperty("Function", fun_str.str());
fit_alg->setProperty("InputWorkspace", outputW);
fit_alg->setProperty("WorkspaceIndex", 0);
fit_alg->setProperty("StartX", outputW->readX(0)[0]);
fit_alg->setProperty("EndX", outputW->readX(0)[outputW->blocksize()]); fit_alg->setProperty("MaxIterations", 200);
fit_alg->setProperty("Output", "fit");
fit_alg->executeAsChildAlg();
if (debug)
std::cout << tim << " to Fit\n";
std::vector<double> params; // = fit_alg->getProperty("Parameters");
Mantid::API::IFunction_sptr fun_res = fit_alg->getProperty("Function");
for (size_t i = 0; i < fun_res->nParams(); ++i) {
params.push_back(fun_res->getParameter(i));
}
peakHeight = params[0];
peakLoc = params[1];
movedetector(-x, -y, -z, -rotx, -roty, -rotz, detname, inputW);
if (debug)
std::cout << tim << " to movedetector()\n";
// Optimize C/peakheight + |peakLoc-peakOpt| where C is scaled by number of
// events
EventWorkspace_const_sptr inputE =
boost::dynamic_pointer_cast<const EventWorkspace>(inputW);
return (static_cast<int>(inputE->getNumberEvents()) / 1.e6) / peakHeight +
std::fabs(peakLoc - boost::lexical_cast<double>(peakOpt));
}
/** Initialisation method
*/
void DiffractionEventCalibrateDetectors::init() {
declareProperty(make_unique<WorkspaceProperty<EventWorkspace>>(
"InputWorkspace", "", Direction::Input,
boost::make_shared<InstrumentValidator>()),
"The workspace containing the geometry to be calibrated.");
declareProperty("Params", "",
"A comma separated list of first bin boundary, width, last "
"bin boundary. Optionally "
"this can be followed by a comma and more widths and last "
"boundary pairs. "
"Use bin boundaries close to peak you wish to maximize. "
"Negative width values indicate logarithmic binning.");
auto mustBePositive = boost::make_shared<BoundedValidator<int>>();
declareProperty(
"MaxIterations", 10, mustBePositive,
"Stop after this number of iterations if a good fit is not found");
auto dblmustBePositive = boost::make_shared<BoundedValidator<double>>();
declareProperty("LocationOfPeakToOptimize", 2.0308, dblmustBePositive,
"Optimize this location of peak by moving detectors");
declareProperty(make_unique<API::FileProperty>(
"DetCalFilename", "", API::FileProperty::Save, ".DetCal"),
"The output filename of the ISAW DetCal file");
declareProperty(
make_unique<PropertyWithValue<std::string>>("BankName", "",
Direction::Input),
"Optional: To only calibrate one bank. Any bank whose name does not "
"match the given string will have no events.");
// Disable default gsl error handler (which is to call abort!)
gsl_set_error_handler_off();
}
/** Executes the algorithm
*
* @throw runtime_error Thrown if algorithm cannot execute*/
void DiffractionEventCalibrateDetectors::exec() {
// Try to retrieve optional properties
const int maxIterations = getProperty("MaxIterations");
const double peakOpt = getProperty("LocationOfPeakToOptimize");
// Get the input workspace
EventWorkspace_sptr inputW = getProperty("InputWorkspace");
// retrieve the properties
const std::string rb_params = getProperty("Params");
// Get some stuff from the input workspace
Instrument_const_sptr inst = inputW->getInstrument();
// Build a list of Rectangular Detectors
std::vector<boost::shared_ptr<RectangularDetector>> detList;
// --------- Loading only one bank ----------------------------------
std::string onebank = getProperty("BankName");
bool doOneBank = (onebank != "");
for (int i = 0; i < inst->nelements(); i++) {
boost::shared_ptr<RectangularDetector> det;
boost::shared_ptr<ICompAssembly> assem;
boost::shared_ptr<ICompAssembly> assem2;
det = boost::dynamic_pointer_cast<RectangularDetector>((*inst)[i]);
if (det) {
if (det->getName().compare(onebank) == 0)
detList.push_back(det);
if (!doOneBank)
detList.push_back(det);
} else {
// Also, look in the first sub-level for RectangularDetectors (e.g. PG3).
// We are not doing a full recursive search since that will be very long
// for lots of pixels.
assem = boost::dynamic_pointer_cast<ICompAssembly>((*inst)[i]);
if (assem) {
for (int j = 0; j < assem->nelements(); j++) {
det = boost::dynamic_pointer_cast<RectangularDetector>((*assem)[j]);
if (det) {
if (det->getName().compare(onebank) == 0)
detList.push_back(det);
if (!doOneBank)
detList.push_back(det);
} else {
// Also, look in the second sub-level for RectangularDetectors (e.g.
// PG3).
// We are not doing a full recursive search since that will be very
// long for lots of pixels.
assem2 = boost::dynamic_pointer_cast<ICompAssembly>((*assem)[j]);
if (assem2) {
for (int k = 0; k < assem2->nelements(); k++) {
det = boost::dynamic_pointer_cast<RectangularDetector>(
(*assem2)[k]);
if (det) {
if (det->getName().compare(onebank) == 0)
detList.push_back(det);
if (!doOneBank)
detList.push_back(det);
}
}
}
}
}
}
}
}
// set-up minimizer
std::string inname = getProperty("InputWorkspace");
std::string outname = inname + "2"; // getProperty("OutputWorkspace");
IAlgorithm_sptr algS = createChildAlgorithm("SortEvents");
algS->setProperty("InputWorkspace", inputW);
algS->setPropertyValue("SortBy", "X Value");
algS->executeAsChildAlg();
// Write DetCal File
std::string filename = getProperty("DetCalFilename");
std::fstream outfile;
outfile.open(filename.c_str(), std::ios::out);
if (detList.size() > 1) {
outfile << "#\n";
outfile << "# Mantid Optimized .DetCal file for SNAP with TWO detector "
"panels\n";
outfile << "# Old Panel, nominal size and distance at -90 degrees.\n";
outfile << "# New Panel, nominal size and distance at +90 degrees.\n";
outfile << "#\n";
outfile << "# Lengths are in centimeters.\n";
outfile << "# Base and up give directions of unit vectors for a local\n";
outfile << "# x,y coordinate system on the face of the detector.\n";
outfile << "#\n";
outfile << "# " << DateAndTime::getCurrentTime().toFormattedString("%c")
<< "\n";
outfile << "#\n";
outfile << "6 L1 T0_SHIFT\n";
IComponent_const_sptr source = inst->getSource();
IComponent_const_sptr sample = inst->getSample();
outfile << "7 " << source->getDistance(*sample) * 100 << " 0\n";
outfile << "4 DETNUM NROWS NCOLS WIDTH HEIGHT DEPTH DETD "
"CenterX CenterY CenterZ BaseX BaseY BaseZ "
"UpX UpY UpZ\n";
}
Progress prog(this, 0.0, 1.0, detList.size());
for (int det = 0; det < static_cast<int>(detList.size()); det++) {
std::string par[6];
par[0] = detList[det]->getName();
par[1] = inname;
par[2] = outname;
std::ostringstream strpeakOpt;
strpeakOpt << peakOpt;
par[3] = strpeakOpt.str();
par[4] = rb_params;
// --- Create a GroupingWorkspace for this detector name ------
CPUTimer tim;
IAlgorithm_sptr alg2 =
AlgorithmFactory::Instance().create("CreateGroupingWorkspace", 1);
alg2->initialize();
alg2->setProperty("InputWorkspace", inputW);
alg2->setPropertyValue("GroupNames", detList[det]->getName());
std::string groupWSName = "group_" + detList[det]->getName();
alg2->setPropertyValue("OutputWorkspace", groupWSName);
alg2->executeAsChildAlg();
par[5] = groupWSName;
std::cout << tim << " to CreateGroupingWorkspace\n";
const gsl_multimin_fminimizer_type *T = gsl_multimin_fminimizer_nmsimplex;
gsl_multimin_fminimizer *s = nullptr;
gsl_vector *ss, *x;
gsl_multimin_function minex_func;
// finally do the fitting
int nopt = 6;
int iter = 0; int status = 0;
/* Starting point */
x = gsl_vector_alloc(nopt);
gsl_vector_set(x, 0, 0.0);
gsl_vector_set(x, 1, 0.0);
gsl_vector_set(x, 2, 0.0);
gsl_vector_set(x, 3, 0.0);
gsl_vector_set(x, 4, 0.0);
gsl_vector_set(x, 5, 0.0);
/* Set initial step sizes to 0.1 */
ss = gsl_vector_alloc(nopt);
gsl_vector_set_all(ss, 0.1);
/* Initialize method and iterate */
minex_func.n = nopt;
minex_func.f = &Mantid::Algorithms::gsl_costFunction;
minex_func.params = ∥
s = gsl_multimin_fminimizer_alloc(T, nopt);
gsl_multimin_fminimizer_set(s, &minex_func, x, ss);
do {
iter++;
status = gsl_multimin_fminimizer_iterate(s);
if (status)
break;
double size = gsl_multimin_fminimizer_size(s);
status = gsl_multimin_test_size(size, 1e-2);
} while (status == GSL_CONTINUE && iter < maxIterations &&
s->fval != -0.000);
// Output summary to log file
if (s->fval != -0.000)
movedetector(gsl_vector_get(s->x, 0), gsl_vector_get(s->x, 1),
gsl_vector_get(s->x, 2), gsl_vector_get(s->x, 3),
gsl_vector_get(s->x, 4), gsl_vector_get(s->x, 5), par[0],
getProperty("InputWorkspace"));
else {
gsl_vector_set(s->x, 0, 0.0);
gsl_vector_set(s->x, 1, 0.0);
gsl_vector_set(s->x, 2, 0.0);
gsl_vector_set(s->x, 3, 0.0);
gsl_vector_set(s->x, 4, 0.0);
gsl_vector_set(s->x, 5, 0.0);
}
std::string reportOfDiffractionEventCalibrateDetectors =
gsl_strerror(status);
if (s->fval == -0.000)
reportOfDiffractionEventCalibrateDetectors = "No events";
g_log.information() << "Detector = " << det << "\n"
<< "Method used = "
<< "Simplex"
<< "\n"
<< "Iteration = " << iter << "\n"
<< "Status = "
<< reportOfDiffractionEventCalibrateDetectors << "\n"
<< "Minimize PeakLoc-" << peakOpt << " = " << s->fval
<< "\n";
// Move in cm for small shifts
g_log.information() << "Move (X) = " << gsl_vector_get(s->x, 0) * 0.01
<< " \n";
g_log.information() << "Move (Y) = " << gsl_vector_get(s->x, 1) * 0.01
<< " \n"; g_log.information() << "Move (Z) = " << gsl_vector_get(s->x, 2) * 0.01
<< " \n";
g_log.information() << "Rotate (X) = " << gsl_vector_get(s->x, 3) << " \n";
g_log.information() << "Rotate (Y) = " << gsl_vector_get(s->x, 4) << " \n";
g_log.information() << "Rotate (Z) = " << gsl_vector_get(s->x, 5) << " \n";
Kernel::V3D CalCenter =
V3D(gsl_vector_get(s->x, 0) * 0.01, gsl_vector_get(s->x, 1) * 0.01,
gsl_vector_get(s->x, 2) * 0.01);
Kernel::V3D Center = detList[det]->getPos() + CalCenter;
int pixmax = detList[det]->xpixels() - 1;
int pixmid = (detList[det]->ypixels() - 1) / 2;
BoundingBox box;
detList[det]->getAtXY(pixmax, pixmid)->getBoundingBox(box);
double baseX = box.xMax();
double baseY = box.yMax();
double baseZ = box.zMax();
Kernel::V3D Base = V3D(baseX, baseY, baseZ) + CalCenter;
pixmid = (detList[det]->xpixels() - 1) / 2;
pixmax = detList[det]->ypixels() - 1;
detList[det]->getAtXY(pixmid, pixmax)->getBoundingBox(box);
double upX = box.xMax();
double upY = box.yMax();
double upZ = box.zMax();
Kernel::V3D Up = V3D(upX, upY, upZ) + CalCenter;
Base -= Center;
Up -= Center;
// Rotate around x
baseX = Base[0];
baseY = Base[1];
baseZ = Base[2];
double deg2rad = M_PI / 180.0;
double angle = gsl_vector_get(s->x, 3) * deg2rad;
Base = V3D(baseX, baseY * cos(angle) - baseZ * sin(angle),
baseY * sin(angle) + baseZ * cos(angle));
upX = Up[0];
upY = Up[1];
upZ = Up[2];
Up = V3D(upX, upY * cos(angle) - upZ * sin(angle),
upY * sin(angle) + upZ * cos(angle));
// Rotate around y
baseX = Base[0];
baseY = Base[1];
baseZ = Base[2];
angle = gsl_vector_get(s->x, 4) * deg2rad;
Base = V3D(baseZ * sin(angle) + baseX * cos(angle), baseY,
baseZ * cos(angle) - baseX * sin(angle));
upX = Up[0];
upY = Up[1];
upZ = Up[2];
Up = V3D(upZ * cos(angle) - upX * sin(angle), upY,
upZ * sin(angle) + upX * cos(angle));
// Rotate around z
baseX = Base[0];
baseY = Base[1];
baseZ = Base[2];
angle = gsl_vector_get(s->x, 5) * deg2rad;
Base = V3D(baseX * cos(angle) - baseY * sin(angle),
baseX * sin(angle) + baseY * cos(angle), baseZ);
upX = Up[0];
upY = Up[1];
upZ = Up[2];
Up = V3D(upX * cos(angle) - upY * sin(angle),
upX * sin(angle) + upY * cos(angle), upZ);
Base.normalize();
Up.normalize();
Center *= 100.0;
// << det+1 << " "
outfile << "5 " << detList[det]->getName().substr(4) << " "
<< detList[det]->xpixels() << " " << detList[det]->ypixels() << " " << 100.0 * detList[det]->xsize() << " "
<< 100.0 * detList[det]->ysize() << " "
<< "0.2000"
<< " " << Center.norm() << " ";
Center.write(outfile);
outfile << " ";
Base.write(outfile);
outfile << " ";
Up.write(outfile);
outfile << "\n";
// clean up dynamically allocated gsl stuff
gsl_vector_free(x);
gsl_vector_free(ss);
gsl_multimin_fminimizer_free(s);
// Remove the now-unneeded grouping workspace
AnalysisDataService::Instance().remove(groupWSName);
prog.report(detList[det]->getName());
}
// Closing
outfile.close();
}
} // namespace Algorithm
} // namespace Mantid