/** Do the initial copy of the data from the input to the output workspace for
* histogram workspaces.
* Takes out the bin width if necessary.
* @param inputWS The input workspace
* @param outputWS The output workspace
*/
void ConvertUnitsUsingDetectorTable::fillOutputHist(
const API::MatrixWorkspace_const_sptr inputWS,
const API::MatrixWorkspace_sptr outputWS) {
const int size = static_cast<int>(inputWS->blocksize());
// Loop over the histograms (detector spectra)
Progress prog(this, 0.0, 0.2, m_numberOfSpectra);
int64_t numberOfSpectra_i =
static_cast<int64_t>(m_numberOfSpectra); // cast to make openmp happy
PARALLEL_FOR2(inputWS, outputWS)
for (int64_t i = 0; i < numberOfSpectra_i; ++i) {
PARALLEL_START_INTERUPT_REGION
// Take the bin width dependency out of the Y & E data
if (m_distribution) {
for (int j = 0; j < size; ++j) {
const double width =
std::abs(inputWS->dataX(i)[j + 1] - inputWS->dataX(i)[j]);
outputWS->dataY(i)[j] = inputWS->dataY(i)[j] * width;
outputWS->dataE(i)[j] = inputWS->dataE(i)[j] * width;
}
} else {
// Just copy over
outputWS->dataY(i) = inputWS->readY(i);
outputWS->dataE(i) = inputWS->readE(i);
}
// Copy over the X data
outputWS->setX(i, inputWS->refX(i));
prog.report("Convert to " + m_outputUnit->unitID());
PARALLEL_END_INTERUPT_REGION
}
PARALLEL_CHECK_INTERUPT_REGION
}
/**
* The main method to calculate the ring profile for 2d image based workspace.
*
* 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 elements of the spectrum 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::processNumericImageRingProfile(
const API::MatrixWorkspace_sptr inputWS, std::vector<double> &output_bins) {
// allocate the bin positions vector
std::vector<int> bin_n(inputWS->dataY(0).size(), -1);
// consider that each spectrum is a row in the image
for (int i = 0; i < static_cast<int>(inputWS->getNumberHistograms()); i++) {
m_progress->report("Computing ring bins positions for pixels");
// get bin for the pixels inside this spectrum
// for each column of the image
getBinForPixel(inputWS, i, bin_n);
// accumulate the values from the spectrum to the target bin
// each column has it correspondend bin_position inside bin_n
const MantidVec &refY = inputWS->dataY(i);
for (size_t j = 0; j < bin_n.size(); j++) {
// is valid bin? No -> skip
if (bin_n[j] < 0)
continue;
// accumulate the values of this spectrum inside this bin
output_bins[bin_n[j]] += refY[j];
}
}
}
/**
* Perform a call to nxgetslab, via the NexusClasses wrapped methods for a given blocksize. The xbins are read along with
* each call to the data/error loading
* @param data :: The NXDataSet object of y values
* @param errors :: The NXDataSet object of error values
* @param xbins :: The xbin NXDataSet
* @param blocksize :: The blocksize to use
* @param nchannels :: The number of channels for the block
* @param hist :: The workspace index to start reading into
* @param wsIndex :: The workspace index to save data into
* @param local_workspace :: A pointer to the workspace
*/
void LoadNexusProcessed::loadBlock(NXDataSetTyped<double> & data, NXDataSetTyped<double> & errors, NXDouble & xbins,
int64_t blocksize, int64_t nchannels, int64_t &hist, int64_t& wsIndex,
API::MatrixWorkspace_sptr local_workspace)
{
data.load(static_cast<int>(blocksize),static_cast<int>(hist));
double *data_start = data();
double *data_end = data_start + nchannels;
errors.load(static_cast<int>(blocksize),static_cast<int>(hist));
double *err_start = errors();
double *err_end = err_start + nchannels;
xbins.load(static_cast<int>(blocksize),static_cast<int>(hist));
const int64_t nxbins(nchannels + 1);
double *xbin_start = xbins();
double *xbin_end = xbin_start + nxbins;
int64_t final(hist + blocksize);
while( hist < final )
{
MantidVec& Y = local_workspace->dataY(wsIndex);
Y.assign(data_start, data_end);
data_start += nchannels; data_end += nchannels;
MantidVec& E = local_workspace->dataE(wsIndex);
E.assign(err_start, err_end);
err_start += nchannels; err_end += nchannels;
MantidVec& X = local_workspace->dataX(wsIndex);
X.assign(xbin_start, xbin_end);
xbin_start += nxbins; xbin_end += nxbins;
++hist;
++wsIndex;
}
}
/** loadData
* Load the counts data from an NXInt into a workspace
*/
void LoadMuonNexus2::loadData(const Mantid::NeXus::NXInt &counts,
const std::vector<double> &timeBins, int wsIndex,
int period, int spec,
API::MatrixWorkspace_sptr localWorkspace) {
MantidVec &X = localWorkspace->dataX(wsIndex);
MantidVec &Y = localWorkspace->dataY(wsIndex);
MantidVec &E = localWorkspace->dataE(wsIndex);
X.assign(timeBins.begin(), timeBins.end());
int nBins = 0;
int *data = nullptr;
if (counts.rank() == 3) {
nBins = counts.dim2();
data = &counts(period, spec, 0);
} else if (counts.rank() == 2) {
nBins = counts.dim1();
data = &counts(spec, 0);
} else {
throw std::runtime_error("Data have unsupported dimansionality");
}
assert(nBins + 1 == static_cast<int>(timeBins.size()));
Y.assign(data, data + nBins);
typedef double (*uf)(double);
uf dblSqrt = std::sqrt;
std::transform(Y.begin(), Y.end(), E.begin(), dblSqrt);
}
/** Smoothing by zeroing.
* @param n :: The order of truncation
* @param unfilteredWS :: workspace for storing the unfiltered Fourier
* transform of the input spectrum
* @param filteredWS :: workspace for storing the filtered spectrum
*/
void FFTSmooth2::zero(int n, API::MatrixWorkspace_sptr &unfilteredWS,
API::MatrixWorkspace_sptr &filteredWS) {
int mx = static_cast<int>(unfilteredWS->readX(0).size());
int my = static_cast<int>(unfilteredWS->readY(0).size());
int ny = my / n;
if (ny == 0)
ny = 1;
filteredWS =
API::WorkspaceFactory::Instance().create(unfilteredWS, 2, mx, my);
const Mantid::MantidVec &Yr = unfilteredWS->readY(0);
const Mantid::MantidVec &Yi = unfilteredWS->readY(1);
const Mantid::MantidVec &X = unfilteredWS->readX(0);
Mantid::MantidVec &yr = filteredWS->dataY(0);
Mantid::MantidVec &yi = filteredWS->dataY(1);
Mantid::MantidVec &xr = filteredWS->dataX(0);
Mantid::MantidVec &xi = filteredWS->dataX(1);
xr.assign(X.begin(), X.end());
xi.assign(X.begin(), X.end());
yr.assign(Yr.size(), 0);
yi.assign(Yr.size(), 0);
for (int i = 0; i < ny; i++) {
yr[i] = Yr[i];
yi[i] = Yi[i];
}
}
void RadiusSum::setUpOutputWorkspace(std::vector<double> &values) {
g_log.debug() << "Output calculated, setting up the output workspace\n";
API::MatrixWorkspace_sptr outputWS = API::WorkspaceFactory::Instance().create(
inputWS, 1, values.size() + 1, values.size());
g_log.debug() << "Set the data\n";
MantidVec &refY = outputWS->dataY(0);
std::copy(values.begin(), values.end(), refY.begin());
g_log.debug() << "Set the bins limits\n";
MantidVec &refX = outputWS->dataX(0);
double bin_size = (max_radius - min_radius) / num_bins;
for (int i = 0; i < (static_cast<int>(refX.size())) - 1; i++)
refX[i] = min_radius + i * bin_size;
refX.back() = max_radius;
// configure the axis:
// for numeric images, the axis are the same as the input workspace, and are
// copied in the creation.
// for instrument related, the axis Y (1) continues to be the same.
// it is necessary to change only the axis X. We have to change it to radius.
if (inputWorkspaceHasInstrumentAssociated(inputWS)) {
API::Axis *const horizontal = new API::NumericAxis(refX.size());
auto labelX = UnitFactory::Instance().create("Label");
boost::dynamic_pointer_cast<Units::Label>(labelX)->setLabel("Radius");
horizontal->unit() = labelX;
outputWS->replaceAxis(0, horizontal);
}
setProperty("OutputWorkspace", outputWS);
}
/** Smoothing using Butterworth filter.
* @param n :: The cutoff frequency control parameter.
* Cutoff frequency = my/n where my is the
* number of sample points in the data.
* As with the "Zeroing" case, the cutoff
* frequency is truncated to an integer value
* and set to 1 if the truncated value was zero.
* @param order :: The order of the Butterworth filter, 1, 2, etc.
* This must be a positive integer.
* @param unfilteredWS :: workspace for storing the unfiltered Fourier
* transform of the input spectrum
* @param filteredWS :: workspace for storing the filtered spectrum
*/
void FFTSmooth2::Butterworth(int n, int order,
API::MatrixWorkspace_sptr &unfilteredWS,
API::MatrixWorkspace_sptr &filteredWS) {
int mx = static_cast<int>(unfilteredWS->readX(0).size());
int my = static_cast<int>(unfilteredWS->readY(0).size());
int ny = my / n;
if (ny == 0)
ny = 1;
filteredWS =
API::WorkspaceFactory::Instance().create(unfilteredWS, 2, mx, my);
const Mantid::MantidVec &Yr = unfilteredWS->readY(0);
const Mantid::MantidVec &Yi = unfilteredWS->readY(1);
const Mantid::MantidVec &X = unfilteredWS->readX(0);
Mantid::MantidVec &yr = filteredWS->dataY(0);
Mantid::MantidVec &yi = filteredWS->dataY(1);
Mantid::MantidVec &xr = filteredWS->dataX(0);
Mantid::MantidVec &xi = filteredWS->dataX(1);
xr.assign(X.begin(), X.end());
xi.assign(X.begin(), X.end());
yr.assign(Yr.size(), 0);
yi.assign(Yr.size(), 0);
double cutoff = ny;
for (int i = 0; i < my; i++) {
double scale = 1.0 / (1.0 + pow(i / cutoff, 2 * order));
yr[i] = scale * Yr[i];
yi[i] = scale * Yi[i];
}
}
/**
* Read spectra from the DAE
* @param period :: Current period index
* @param index :: First spectrum index
* @param count :: Number of spectra to read
* @param workspace :: Workspace to store the data
* @param workspaceIndex :: index in workspace to store data
*/
void ISISHistoDataListener::getData(int period, int index, int count,
API::MatrixWorkspace_sptr workspace,
size_t workspaceIndex) {
const int numberOfBins = m_numberOfBins[m_timeRegime];
const size_t bufferSize = count * (numberOfBins + 1) * sizeof(int);
std::vector<int> dataBuffer(bufferSize);
// Read in spectra from DAE
int ndims = 2, dims[2];
dims[0] = count;
dims[1] = numberOfBins + 1;
int spectrumIndex = index + period * (m_totalNumberOfSpectra + 1);
if (IDCgetdat(m_daeHandle, spectrumIndex, count, dataBuffer.data(), dims,
&ndims) != 0) {
g_log.error("Unable to read DATA from DAE " + m_daeName);
throw Kernel::Exception::FileError("Unable to read DATA from DAE ",
m_daeName);
}
for (size_t i = 0; i < static_cast<size_t>(count); ++i) {
size_t wi = workspaceIndex + i;
workspace->setX(wi, m_bins[m_timeRegime]);
MantidVec &y = workspace->dataY(wi);
MantidVec &e = workspace->dataE(wi);
workspace->getSpectrum(wi)->setSpectrumNo(index + static_cast<specid_t>(i));
size_t shift = i * (numberOfBins + 1) + 1;
y.assign(dataBuffer.begin() + shift, dataBuffer.begin() + shift + y.size());
std::transform(y.begin(), y.end(), e.begin(), dblSqrt);
}
}
void ConvertEmptyToTof::setTofInWS(const std::vector<double> &tofAxis,
API::MatrixWorkspace_sptr outputWS) {
const size_t numberOfSpectra = m_inputWS->getNumberHistograms();
int64_t numberOfSpectraInt64 =
static_cast<int64_t>(numberOfSpectra); // cast to make openmp happy
g_log.debug() << "Setting the TOF X Axis for numberOfSpectra="
<< numberOfSpectra << '\n';
Progress prog(this, 0.0, 0.2, numberOfSpectra);
PARALLEL_FOR2(m_inputWS, outputWS)
for (int64_t i = 0; i < numberOfSpectraInt64; ++i) {
PARALLEL_START_INTERUPT_REGION
// Just copy over
outputWS->dataY(i) = m_inputWS->readY(i);
outputWS->dataE(i) = m_inputWS->readE(i);
// copy
outputWS->setX(i, tofAxis);
prog.report();
PARALLEL_END_INTERUPT_REGION
} // end for i
PARALLEL_CHECK_INTERUPT_REGION
outputWS->getAxis(0)->unit() = UnitFactory::Instance().create("TOF");
}
/** Execute the algorithm.
*/
void DampSq::exec()
{
// TODO Auto-generated execute stub
// 1. Generate new workspace
API::MatrixWorkspace_const_sptr isqspace = getProperty("InputWorkspace");
API::MatrixWorkspace_sptr osqspace = WorkspaceFactory::Instance().create(isqspace, 1, isqspace->size(), isqspace->size());
int mode = getProperty("Mode");
double qmax = getProperty("QMax");
if (mode < 1 || mode > 4) {
g_log.error("Damp mode can only be 1, 2, 3, or 4");
return;
}
// 2. Get access to all
const MantidVec& iQVec = isqspace->dataX(0);
const MantidVec& iSVec = isqspace->dataY(0);
const MantidVec& iEVec = isqspace->dataE(0);
MantidVec& oQVec = osqspace->dataX(0);
MantidVec& oSVec = osqspace->dataY(0);
MantidVec& oEVec = osqspace->dataE(0);
// 3. Calculation
double dqmax = qmax - iQVec[0];
double damp;
for (unsigned int i = 0; i < iQVec.size(); i ++) {
// a) calculate damp coefficient
switch (mode) {
case 1:
damp = dampcoeff1(iQVec[i], qmax, dqmax);
break;
case 2:
damp = dampcoeff2(iQVec[i], qmax, dqmax);;
break;
case 3:
damp = dampcoeff3(iQVec[i], qmax, dqmax);;
break;
case 4:
damp = dampcoeff4(iQVec[i], qmax, dqmax);;
break;
default:
damp = 0;
break;
}
// b) calculate new S(q)
oQVec[i] = iQVec[i];
oSVec[i] = 1 + damp*(iSVec[i]-1);
oEVec[i] = damp*iEVec[i];
} // i
// 4. Over
setProperty("OutputWorkspace", osqspace);
return;
}
/** Performs the Holtzer transformation: IQ v Q
* @param ws The workspace to be transformed
*/
void IQTransform::holtzer(API::MatrixWorkspace_sptr ws)
{
MantidVec& X = ws->dataX(0);
MantidVec& Y = ws->dataY(0);
MantidVec& E = ws->dataE(0);
std::transform(Y.begin(),Y.end(),X.begin(),Y.begin(),std::multiplies<double>());
std::transform(E.begin(),E.end(),X.begin(),E.begin(),std::multiplies<double>());
ws->setYUnitLabel("I x Q");
}
/** Performs the Porod transformation: IQ^4 v Q
* @param ws The workspace to be transformed
*/
void IQTransform::porod(API::MatrixWorkspace_sptr ws)
{
MantidVec& X = ws->dataX(0);
MantidVec& Y = ws->dataY(0);
MantidVec& E = ws->dataE(0);
MantidVec Q4(X.size());
std::transform(X.begin(),X.end(),X.begin(),Q4.begin(),VectorHelper::TimesSquares<double>());
std::transform(Y.begin(),Y.end(),Q4.begin(),Y.begin(),std::multiplies<double>());
std::transform(E.begin(),E.end(),Q4.begin(),E.begin(),std::multiplies<double>());
ws->setYUnitLabel("I x Q^4");
}
/** Performs a log-log transformation: Ln(I) v Ln(Q)
* @param ws The workspace to be transformed
* @throw std::range_error if an attempt is made to take log of a negative number
*/
void IQTransform::logLog(API::MatrixWorkspace_sptr ws)
{
MantidVec& X = ws->dataX(0);
MantidVec& Y = ws->dataY(0);
MantidVec& E = ws->dataE(0);
std::transform(X.begin(),X.end(),X.begin(),VectorHelper::Log<double>());
std::transform(E.begin(),E.end(),Y.begin(),E.begin(),std::divides<double>());
std::transform(Y.begin(),Y.end(),Y.begin(),VectorHelper::LogNoThrow<double>());
ws->setYUnitLabel("Ln(I)");
m_label->setLabel("Ln(Q)");
}
/** Performs the Guinier (sheets) transformation: Ln(IQ^2) v Q^2
* @param ws The workspace to be transformed
* @throw std::range_error if an attempt is made to take log of a negative number
*/
void IQTransform::guinierSheets(API::MatrixWorkspace_sptr ws)
{
MantidVec& X = ws->dataX(0);
MantidVec& Y = ws->dataY(0);
MantidVec& E = ws->dataE(0);
std::transform(E.begin(),E.end(),Y.begin(),E.begin(),std::divides<double>());
std::transform(X.begin(),X.end(),X.begin(),VectorHelper::Squares<double>());
std::transform(Y.begin(),Y.end(),X.begin(),Y.begin(),std::multiplies<double>());
std::transform(Y.begin(),Y.end(),Y.begin(),VectorHelper::LogNoThrow<double>());
ws->setYUnitLabel("Ln(I x Q^2)");
m_label->setLabel("Q^2");
}
/** Remove background per pixel
* @brief ConvertCWSDExpToMomentum::removeBackground
* @param dataws
*/
void ConvertCWSDExpToMomentum::removeBackground(
API::MatrixWorkspace_sptr dataws) {
if (dataws->getNumberHistograms() != m_backgroundWS->getNumberHistograms())
throw std::runtime_error("Impossible to have this situation");
size_t numhist = dataws->getNumberHistograms();
for (size_t i = 0; i < numhist; ++i) {
double bkgd_y = m_backgroundWS->readY(i)[0];
if (fabs(bkgd_y) > 1.E-2) {
dataws->dataY(i)[0] -= bkgd_y;
dataws->dataE(i)[0] = std::sqrt(dataws->readY(i)[0]);
}
}
}
/** Unwraps the Y & E vectors of a spectrum according to the ranges found in
* unwrapX.
* @param tempWS :: A pointer to the temporary workspace in which the
* results are being stored
* @param spectrum :: The workspace index
* @param rangeBounds :: The upper and lower ranges for the unwrapping
*/
void UnwrapMonitor::unwrapYandE(const API::MatrixWorkspace_sptr &tempWS,
const int &spectrum,
const std::vector<int> &rangeBounds) {
// Copy over the relevant ranges of Y & E data
MantidVec &Y = tempWS->dataY(spectrum);
MantidVec &E = tempWS->dataE(spectrum);
// Get references to the input data
const MantidVec &YIn = m_inputWS->dataY(spectrum);
const MantidVec &EIn = m_inputWS->dataE(spectrum);
if (rangeBounds[2] != -1) {
// Copy in the upper range
Y.assign(YIn.begin() + rangeBounds[2], YIn.end());
E.assign(EIn.begin() + rangeBounds[2], EIn.end());
// Propagate masking, if necessary
if (m_inputWS->hasMaskedBins(spectrum)) {
const MatrixWorkspace::MaskList &inputMasks =
m_inputWS->maskedBins(spectrum);
MatrixWorkspace::MaskList::const_iterator it;
for (it = inputMasks.begin(); it != inputMasks.end(); ++it) {
if (static_cast<int>((*it).first) >= rangeBounds[2])
tempWS->flagMasked(spectrum, (*it).first - rangeBounds[2],
(*it).second);
}
}
} else {
// Y & E are references to existing vector. Assign above clears them, so
// need to explicitly here
Y.clear();
E.clear();
}
if (rangeBounds[0] != -1 && rangeBounds[1] > 0) {
// Now append the lower range
MantidVec::const_iterator YStart = YIn.begin();
MantidVec::const_iterator EStart = EIn.begin();
Y.insert(Y.end(), YStart + rangeBounds[0], YStart + rangeBounds[1]);
E.insert(E.end(), EStart + rangeBounds[0], EStart + rangeBounds[1]);
// Propagate masking, if necessary
if (m_inputWS->hasMaskedBins(spectrum)) {
const MatrixWorkspace::MaskList &inputMasks =
m_inputWS->maskedBins(spectrum);
MatrixWorkspace::MaskList::const_iterator it;
for (it = inputMasks.begin(); it != inputMasks.end(); ++it) {
const int maskIndex = static_cast<int>((*it).first);
if (maskIndex >= rangeBounds[0] && maskIndex < rangeBounds[1])
tempWS->flagMasked(spectrum, maskIndex - rangeBounds[0],
(*it).second);
}
}
}
}
/** Reads in the data corresponding to a single spectrum
* @param speFile :: The file handle
* @param workspace :: The output workspace
* @param index :: The index of the current spectrum
*/
void LoadSPE::readHistogram(FILE *speFile, API::MatrixWorkspace_sptr workspace,
size_t index) {
// First, there should be a comment line
char comment[100];
fgets(comment, 100, speFile);
if (comment[0] != '#')
reportFormatError(std::string(comment));
// Then it's the Y values
MantidVec &Y = workspace->dataY(index);
const size_t nbins = workspace->blocksize();
int retval;
for (size_t i = 0; i < nbins; ++i) {
retval = fscanf(speFile, "%10le", &Y[i]);
// g_log.error() << Y[i] << std::endl;
if (retval != 1) {
std::stringstream ss;
ss << "Reading data value" << i << " of histogram " << index;
reportFormatError(ss.str());
}
// -10^30 is the flag for not a number used in SPE files (from
// www.mantidproject.org/images/3/3d/Spe_file_format.pdf)
if (Y[i] == SaveSPE::MASK_FLAG) {
Y[i] = std::numeric_limits<double>::quiet_NaN();
}
}
// Read to EOL
fgets(comment, 100, speFile);
// Another comment line
fgets(comment, 100, speFile);
if (comment[0] != '#')
reportFormatError(std::string(comment));
// And then the error values
MantidVec &E = workspace->dataE(index);
for (size_t i = 0; i < nbins; ++i) {
retval = fscanf(speFile, "%10le", &E[i]);
if (retval != 1) {
std::stringstream ss;
ss << "Reading error value" << i << " of histogram " << index;
reportFormatError(ss.str());
}
}
// Read to EOL
fgets(comment, 100, speFile);
return;
}
/** Divide each bin by the width of its q bin.
* @param outputWS :: The output workspace
* @param qAxis :: A vector of the q bin boundaries
*/
void SofQWCentre::makeDistribution(API::MatrixWorkspace_sptr outputWS,
const std::vector<double> qAxis) {
std::vector<double> widths(qAxis.size());
std::adjacent_difference(qAxis.begin(), qAxis.end(), widths.begin());
const size_t numQBins = outputWS->getNumberHistograms();
for (size_t i = 0; i < numQBins; ++i) {
MantidVec &Y = outputWS->dataY(i);
MantidVec &E = outputWS->dataE(i);
std::transform(Y.begin(), Y.end(), Y.begin(),
std::bind2nd(std::divides<double>(), widths[i + 1]));
std::transform(E.begin(), E.end(), E.begin(),
std::bind2nd(std::divides<double>(), widths[i + 1]));
}
}
/**
* Here is the main logic to perform the transformation, to calculate the bin
*position in degree for each spectrum.
*
* The first part of the method is to check if the pixel position is inside the
*ring defined as minRadio and maxRadio.
*
* To do this, it deducts the pixel position. This deduction follows the
*followin assumption:
*
* - the spectrum_index == row number
* - the position in the 'Y' direction is given by getAxis(1)[spectrum_index]
* - the position in the 'X' direction is the central point of the bin
*(dataX[column] + dataX[column+1])/2
*
* Having the position of the pixel, as defined above, if the distance is
*outside the ring defined by minRadio, maxRadio,
* it defines the bin position as -1.
*
* If the pixel is inside the ring, it calculates the angle of the pixel and
*calls fromAngleToBin to define the bin
* position.
* @param ws: pointer to the workspace
* @param spectrum_index: index of the spectrum
* @param bins_pos: bin positions (for each column inside the spectrum, the
*correspondent bin_pos)
*/
void RingProfile::getBinForPixel(const API::MatrixWorkspace_sptr ws,
int spectrum_index,
std::vector<int> &bins_pos) {
if (bins_pos.size() != ws->dataY(spectrum_index).size())
throw std::runtime_error("Invalid bin positions vector");
API::NumericAxis *oldAxis2 = dynamic_cast<API::NumericAxis *>(ws->getAxis(1));
// assumption y position is the ws->getAxis(1)(spectrum_index)
if (!oldAxis2) {
throw std::logic_error("Failed to cast workspace axis to NumericAxis");
}
// calculate ypos, the difference of y - centre and the square of this
// difference
double ypos = (*oldAxis2)(spectrum_index);
double diffy = ypos - centre_y;
double diffy_quad = pow(diffy, 2.0);
// the reference to X bins (the limits for each pixel in the horizontal
// direction)
auto xvec = ws->dataX(spectrum_index);
// for each pixel inside this row
for (size_t i = 0; i < xvec.size() - 1; i++) {
double xpos = (xvec[i] + xvec[i + 1]) /
2.0; // the x position is the centre of the bins boundaries
double diffx = xpos - centre_x;
// calculate the distance => norm of pixel position - centre
double distance = sqrt(pow(diffx, 2.0) + diffy_quad);
// check if the distance is inside the ring
if (distance < min_radius || distance > max_radius || distance == 0) {
bins_pos[i] = -1;
continue;
}
double angle = atan2(diffy, diffx);
// call fromAngleToBin (radians)
bins_pos[i] = fromAngleToBin(angle, false);
}
}
/** Performs a transformation of the form: Q^A x I^B x Ln(Q^C x I^D x E) v Q^F x
* I^G x Ln(Q^H x I^I x J).
* Uses the 'GeneralFunctionConstants' property where A-J are the 10 (ordered)
* input constants.
* @param ws The workspace to be transformed
* @throw std::range_error if an attempt is made to take log of a negative
* number
*/
void IQTransform::general(API::MatrixWorkspace_sptr ws) {
MantidVec &X = ws->dataX(0);
MantidVec &Y = ws->dataY(0);
MantidVec &E = ws->dataE(0);
const std::vector<double> C = getProperty("GeneralFunctionConstants");
// Check for the correct number of elements
if (C.size() != 10) {
std::string mess(
"The General transformation requires 10 values to be provided.");
g_log.error(mess);
throw std::invalid_argument(mess);
}
for (size_t i = 0; i < Y.size(); ++i) {
double tmpX = std::pow(X[i], C[7]) * std::pow(Y[i], C[8]) * C[9];
if (tmpX <= 0.0)
throw std::range_error(
"Attempt to take log of a zero or negative number.");
tmpX = std::pow(X[i], C[5]) * std::pow(Y[i], C[6]) * std::log(tmpX);
const double tmpY = std::pow(X[i], C[2]) * std::pow(Y[i], C[3]) * C[4];
if (tmpY <= 0.0)
throw std::range_error(
"Attempt to take log of a zero or negative number.");
const double newY =
std::pow(X[i], C[0]) * std::pow(Y[i], C[1]) * std::log(tmpY);
E[i] *= std::pow(X[i], C[0]) *
(C[1] * std::pow(Y[i], C[1] - 1) * std::log(tmpY) +
((std::pow(Y[i], C[1]) * std::pow(X[i], C[2]) * C[4] * C[3] *
std::pow(Y[i], C[3] - 1)) /
tmpY));
X[i] = tmpX;
Y[i] = newY;
}
std::stringstream ylabel;
ylabel << "Q^" << C[0] << " x I^" << C[1] << " x Ln( Q^" << C[2] << " x I^"
<< C[3] << " x " << C[4] << ")";
ws->setYUnitLabel(ylabel.str());
std::stringstream xlabel;
xlabel << "Q^" << C[5] << " x I^" << C[6] << " x Ln( Q^" << C[7] << " x I^"
<< C[8] << " x " << C[9] << ")";
m_label->setLabel(xlabel.str());
}
/** Performs the Debye-Bueche transformation: 1/sqrt(I) v Q^2
* The output is set to zero for negative input Y values
* @param ws The workspace to be transformed
*/
void IQTransform::debyeBueche(API::MatrixWorkspace_sptr ws) {
MantidVec &X = ws->dataX(0);
MantidVec &Y = ws->dataY(0);
MantidVec &E = ws->dataE(0);
std::transform(X.begin(), X.end(), X.begin(),
VectorHelper::Squares<double>());
for (size_t i = 0; i < Y.size(); ++i) {
if (Y[i] > 0.0) {
Y[i] = 1.0 / std::sqrt(Y[i]);
E[i] *= std::pow(Y[i], 3);
} else {
Y[i] = 0.0;
E[i] = 0.0;
}
}
ws->setYUnitLabel("1/sqrt(I)");
m_label->setLabel("Q^2");
}
/** Zeroes all data points outside the X values given
* @param outputWorkspace :: The output workspace - data has already been
* copied
* @param inIndex :: The workspace index of the spectrum in the input
* workspace
* @param outIndex :: The workspace index of the spectrum in the output
* workspace
*/
void ExtractSpectra::cropRagged(API::MatrixWorkspace_sptr outputWorkspace,
int inIndex, int outIndex) {
MantidVec &Y = outputWorkspace->dataY(outIndex);
MantidVec &E = outputWorkspace->dataE(outIndex);
const size_t size = Y.size();
size_t startX = this->getXMin(inIndex);
if (startX > size)
startX = size;
for (size_t i = 0; i < startX; ++i) {
Y[i] = 0.0;
E[i] = 0.0;
}
size_t endX = this->getXMax(inIndex);
if (endX > 0)
endX -= m_histogram;
for (size_t i = endX; i < size; ++i) {
Y[i] = 0.0;
E[i] = 0.0;
}
}
/**
* Perform a call to nxgetslab, via the NexusClasses wrapped methods for a given blocksize. This assumes that the
* xbins have alread been cached
* @param data :: The NXDataSet object of y values
* @param errors :: The NXDataSet object of error values
* @param blocksize :: The blocksize to use
* @param nchannels :: The number of channels for the block
* @param hist :: The workspace index to start reading into
* @param local_workspace :: A pointer to the workspace
*/
void LoadNexusProcessed::loadBlock(NXDataSetTyped<double> & data, NXDataSetTyped<double> & errors,
int64_t blocksize, int64_t nchannels, int64_t &hist,
API::MatrixWorkspace_sptr local_workspace)
{
data.load(static_cast<int>(blocksize),static_cast<int>(hist));
errors.load(static_cast<int>(blocksize),static_cast<int>(hist));
double *data_start = data();
double *data_end = data_start + nchannels;
double *err_start = errors();
double *err_end = err_start + nchannels;
int64_t final(hist + blocksize);
while( hist < final )
{
MantidVec& Y = local_workspace->dataY(hist);
Y.assign(data_start, data_end);
data_start += nchannels; data_end += nchannels;
MantidVec& E = local_workspace->dataE(hist);
E.assign(err_start, err_end);
err_start += nchannels; err_end += nchannels;
local_workspace->setX(hist, m_xbins);
++hist;
}
}
/** Carries out the bin-by-bin normalisation
* @param inputWorkspace The input workspace
* @param outputWorkspace The result workspace
*/
void NormaliseToMonitor::normaliseBinByBin(API::MatrixWorkspace_sptr inputWorkspace,
API::MatrixWorkspace_sptr& outputWorkspace)
{
EventWorkspace_sptr inputEvent = boost::dynamic_pointer_cast<EventWorkspace>(inputWorkspace);
EventWorkspace_sptr outputEvent;
// Only create output workspace if different to input one
if (outputWorkspace != inputWorkspace )
{
if (inputEvent)
{
//Make a brand new EventWorkspace
outputEvent = boost::dynamic_pointer_cast<EventWorkspace>(
API::WorkspaceFactory::Instance().create("EventWorkspace", inputEvent->getNumberHistograms(), 2, 1));
//Copy geometry and data
API::WorkspaceFactory::Instance().initializeFromParent(inputEvent, outputEvent, false);
outputEvent->copyDataFrom( (*inputEvent) );
outputWorkspace = boost::dynamic_pointer_cast<MatrixWorkspace>(outputEvent);
}
else
outputWorkspace = WorkspaceFactory::Instance().create(inputWorkspace);
}
// Get hold of the monitor spectrum
const MantidVec& monX = m_monitor->readX(0);
MantidVec& monY = m_monitor->dataY(0);
MantidVec& monE = m_monitor->dataE(0);
// Calculate the overall normalisation just the once if bins are all matching
if (m_commonBins) this->normalisationFactor(m_monitor->readX(0),&monY,&monE);
const size_t numHists = inputWorkspace->getNumberHistograms();
MantidVec::size_type specLength = inputWorkspace->blocksize();
Progress prog(this,0.0,1.0,numHists);
// Loop over spectra
PARALLEL_FOR3(inputWorkspace,outputWorkspace,m_monitor)
for (int64_t i = 0; i < int64_t(numHists); ++i)
{
PARALLEL_START_INTERUPT_REGION
prog.report();
const MantidVec& X = inputWorkspace->readX(i);
// If not rebinning, just point to our monitor spectra, otherwise create new vectors
MantidVec* Y = ( m_commonBins ? &monY : new MantidVec(specLength) );
MantidVec* E = ( m_commonBins ? &monE : new MantidVec(specLength) );
if (!m_commonBins)
{
// ConvertUnits can give X vectors of all zeroes - skip these, they cause problems
if (X.back() == 0.0 && X.front() == 0.0) continue;
// Rebin the monitor spectrum to match the binning of the current data spectrum
VectorHelper::rebinHistogram(monX,monY,monE,X,*Y,*E,false);
// Recalculate the overall normalisation factor
this->normalisationFactor(X,Y,E);
}
if (inputEvent)
{
// ----------------------------------- EventWorkspace ---------------------------------------
EventList & outEL = outputEvent->getEventList(i);
outEL.divide(X, *Y, *E);
}
else
{
// ----------------------------------- Workspace2D ---------------------------------------
const MantidVec& inY = inputWorkspace->readY(i);
const MantidVec& inE = inputWorkspace->readE(i);
MantidVec& YOut = outputWorkspace->dataY(i);
MantidVec& EOut = outputWorkspace->dataE(i);
outputWorkspace->dataX(i) = inputWorkspace->readX(i);
// The code below comes more or less straight out of Divide.cpp
for (MantidVec::size_type k = 0; k < specLength; ++k)
{
// Get references to the input Y's
const double& leftY = inY[k];
const double& rightY = (*Y)[k];
// Calculate result and store in local variable to avoid overwriting original data if
// output workspace is same as one of the input ones
const double newY = leftY/rightY;
if (fabs(rightY)>1.0e-12 && fabs(newY)>1.0e-12)
{
const double lhsFactor = (inE[k]<1.0e-12|| fabs(leftY)<1.0e-12) ? 0.0 : pow((inE[k]/leftY),2);
const double rhsFactor = (*E)[k]<1.0e-12 ? 0.0 : pow(((*E)[k]/rightY),2);
EOut[k] = std::abs(newY) * sqrt(lhsFactor+rhsFactor);
}
// Now store the result
YOut[k] = newY;
} // end Workspace2D case
} // end loop over current spectrum
if (!m_commonBins) { delete Y; delete E; }
PARALLEL_END_INTERUPT_REGION
} // end loop over spectra
PARALLEL_CHECK_INTERUPT_REGION
}
/** Executes the rebin algorithm
*
* @throw runtime_error Thrown if
*/
void Rebunch::exec()
{
// retrieve the properties
int n_bunch=getProperty("NBunch");
// Get the input workspace
MatrixWorkspace_const_sptr inputW = getProperty("InputWorkspace");
bool dist = inputW->isDistribution();
// workspace independent determination of length
int histnumber = static_cast<int>(inputW->size()/inputW->blocksize());
/*
const std::vector<double>& Xold = inputW->readX(0);
const std::vector<double>& Yold = inputW->readY(0);
int size_x=Xold.size();
int size_y=Yold.size();
*/
int size_x = static_cast<int>(inputW->readX(0).size());
int size_y = static_cast<int>(inputW->readY(0).size());
//signal is the same length for histogram and point data
int ny=(size_y/n_bunch);
if(size_y%n_bunch >0)ny+=1;
// default is for hist
int nx=ny+1;
bool point=false;
if (size_x==size_y)
{
point=true;
nx=ny;
}
// make output Workspace the same type is the input, but with new length of signal array
API::MatrixWorkspace_sptr outputW = API::WorkspaceFactory::Instance().create(inputW,histnumber,nx,ny);
int progress_step = histnumber / 100;
if (progress_step == 0) progress_step = 1;
PARALLEL_FOR2(inputW,outputW)
for (int hist=0; hist < histnumber;hist++)
{
PARALLEL_START_INTERUPT_REGION
// Ensure that axis information are copied to the output workspace if the axis exists
try
{
outputW->getAxis(1)->spectraNo(hist)=inputW->getAxis(1)->spectraNo(hist);
}
catch( Exception::IndexError& )
{
// Not a Workspace2D
}
// get const references to input Workspace arrays (no copying)
const MantidVec& XValues = inputW->readX(hist);
const MantidVec& YValues = inputW->readY(hist);
const MantidVec& YErrors = inputW->readE(hist);
//get references to output workspace data (no copying)
MantidVec& XValues_new=outputW->dataX(hist);
MantidVec& YValues_new=outputW->dataY(hist);
MantidVec& YErrors_new=outputW->dataE(hist);
// output data arrays are implicitly filled by function
if(point)
{
rebunch_point(XValues,YValues,YErrors,XValues_new,YValues_new,YErrors_new,n_bunch);
}
else
{
rebunch_hist(XValues,YValues,YErrors,XValues_new,YValues_new,YErrors_new,n_bunch, dist);
}
if (hist % progress_step == 0)
{
progress(double(hist)/histnumber);
interruption_point();
}
PARALLEL_END_INTERUPT_REGION
}
PARALLEL_CHECK_INTERUPT_REGION
outputW->isDistribution(dist);
// Copy units
if (outputW->getAxis(0)->unit().get())
outputW->getAxis(0)->unit() = inputW->getAxis(0)->unit();
try
{
if (inputW->getAxis(1)->unit().get())
outputW->getAxis(1)->unit() = inputW->getAxis(1)->unit();
}
catch(Exception::IndexError&) {
// OK, so this isn't a Workspace2D
}
// Assign it to the output workspace property
setProperty("OutputWorkspace",outputW);
return;
}
/**
* Move the user selected spectra in the input workspace into groups in the output workspace
* @param inputWS :: user selected input workspace for the algorithm
* @param outputWS :: user selected output workspace for the algorithm
* @param prog4Copy :: the amount of algorithm progress to attribute to moving a single spectra
* @return number of new grouped spectra
*/
size_t GroupDetectors2::formGroupsEvent( DataObjects::EventWorkspace_const_sptr inputWS, DataObjects::EventWorkspace_sptr outputWS,
const double prog4Copy)
{
// get "Behaviour" string
const std::string behaviour = getProperty("Behaviour");
int bhv = 0;
if ( behaviour == "Average" ) bhv = 1;
API::MatrixWorkspace_sptr beh = API::WorkspaceFactory::Instance().create(
"Workspace2D", static_cast<int>(m_GroupSpecInds.size()), 1, 1);
g_log.debug() << name() << ": Preparing to group spectra into " << m_GroupSpecInds.size() << " groups\n";
// where we are copying spectra to, we start copying to the start of the output workspace
size_t outIndex = 0;
// Only used for averaging behaviour. We may have a 1:1 map where a Divide would be waste as it would be just dividing by 1
bool requireDivide(false);
for ( storage_map::const_iterator it = m_GroupSpecInds.begin(); it != m_GroupSpecInds.end() ; ++it )
{
// This is the grouped spectrum
EventList & outEL = outputWS->getEventList(outIndex);
// The spectrum number of the group is the key
outEL.setSpectrumNo(it->first);
// Start fresh with no detector IDs
outEL.clearDetectorIDs();
// the Y values and errors from spectra being grouped are combined in the output spectrum
// Keep track of number of detectors required for masking
size_t nonMaskedSpectra(0);
beh->dataX(outIndex)[0] = 0.0;
beh->dataE(outIndex)[0] = 0.0;
for( std::vector<size_t>::const_iterator wsIter = it->second.begin(); wsIter != it->second.end(); ++wsIter)
{
const size_t originalWI = *wsIter;
const EventList & fromEL=inputWS->getEventList(originalWI);
//Add the event lists with the operator
outEL += fromEL;
// detectors to add to the output spectrum
outEL.addDetectorIDs(fromEL.getDetectorIDs() );
try
{
Geometry::IDetector_const_sptr det = inputWS->getDetector(originalWI);
if( !det->isMasked() ) ++nonMaskedSpectra;
}
catch(Exception::NotFoundError&)
{
// If a detector cannot be found, it cannot be masked
++nonMaskedSpectra;
}
}
if( nonMaskedSpectra == 0 ) ++nonMaskedSpectra; // Avoid possible divide by zero
if(!requireDivide) requireDivide = (nonMaskedSpectra > 1);
beh->dataY(outIndex)[0] = static_cast<double>(nonMaskedSpectra);
// make regular progress reports and check for cancelling the algorithm
if ( outIndex % INTERVAL == 0 )
{
m_FracCompl += INTERVAL*prog4Copy;
if ( m_FracCompl > 1.0 )
m_FracCompl = 1.0;
progress(m_FracCompl);
interruption_point();
}
outIndex ++;
}
// Refresh the spectraDetectorMap
outputWS->doneAddingEventLists();
if ( bhv == 1 && requireDivide )
{
g_log.debug() << "Running Divide algorithm to perform averaging.\n";
Mantid::API::IAlgorithm_sptr divide = createChildAlgorithm("Divide");
divide->initialize();
divide->setProperty<API::MatrixWorkspace_sptr>("LHSWorkspace", outputWS);
divide->setProperty<API::MatrixWorkspace_sptr>("RHSWorkspace", beh);
divide->setProperty<API::MatrixWorkspace_sptr>("OutputWorkspace", outputWS);
divide->execute();
}
g_log.debug() << name() << " created " << outIndex << " new grouped spectra\n";
return outIndex;
}
/**
* Move the user selected spectra in the input workspace into groups in the output workspace
* @param inputWS :: user selected input workspace for the algorithm
* @param outputWS :: user selected output workspace for the algorithm
* @param prog4Copy :: the amount of algorithm progress to attribute to moving a single spectra
* @return number of new grouped spectra
*/
size_t GroupDetectors2::formGroups( API::MatrixWorkspace_const_sptr inputWS, API::MatrixWorkspace_sptr outputWS,
const double prog4Copy)
{
// get "Behaviour" string
const std::string behaviour = getProperty("Behaviour");
int bhv = 0;
if ( behaviour == "Average" ) bhv = 1;
API::MatrixWorkspace_sptr beh = API::WorkspaceFactory::Instance().create(
"Workspace2D", static_cast<int>(m_GroupSpecInds.size()), 1, 1);
g_log.debug() << name() << ": Preparing to group spectra into " << m_GroupSpecInds.size() << " groups\n";
// where we are copying spectra to, we start copying to the start of the output workspace
size_t outIndex = 0;
// Only used for averaging behaviour. We may have a 1:1 map where a Divide would be waste as it would be just dividing by 1
bool requireDivide(false);
for ( storage_map::const_iterator it = m_GroupSpecInds.begin(); it != m_GroupSpecInds.end() ; ++it )
{
// This is the grouped spectrum
ISpectrum * outSpec = outputWS->getSpectrum(outIndex);
// The spectrum number of the group is the key
outSpec->setSpectrumNo(it->first);
// Start fresh with no detector IDs
outSpec->clearDetectorIDs();
// Copy over X data from first spectrum, the bin boundaries for all spectra are assumed to be the same here
outSpec->dataX() = inputWS->readX(0);
// the Y values and errors from spectra being grouped are combined in the output spectrum
// Keep track of number of detectors required for masking
size_t nonMaskedSpectra(0);
beh->dataX(outIndex)[0] = 0.0;
beh->dataE(outIndex)[0] = 0.0;
for( std::vector<size_t>::const_iterator wsIter = it->second.begin(); wsIter != it->second.end(); ++wsIter)
{
const size_t originalWI = *wsIter;
// detectors to add to firstSpecNum
const ISpectrum * fromSpectrum = inputWS->getSpectrum(originalWI);
// Add up all the Y spectra and store the result in the first one
// Need to keep the next 3 lines inside loop for now until ManagedWorkspace mru-list works properly
MantidVec &firstY = outSpec->dataY();
MantidVec::iterator fYit;
MantidVec::iterator fEit = outSpec->dataE().begin();
MantidVec::const_iterator Yit = fromSpectrum->dataY().begin();
MantidVec::const_iterator Eit = fromSpectrum->dataE().begin();
for (fYit = firstY.begin(); fYit != firstY.end(); ++fYit, ++fEit, ++Yit, ++Eit)
{
*fYit += *Yit;
// Assume 'normal' (i.e. Gaussian) combination of errors
*fEit = std::sqrt( (*fEit)*(*fEit) + (*Eit)*(*Eit) );
}
// detectors to add to the output spectrum
outSpec->addDetectorIDs(fromSpectrum->getDetectorIDs() );
try
{
Geometry::IDetector_const_sptr det = inputWS->getDetector(originalWI);
if( !det->isMasked() ) ++nonMaskedSpectra;
}
catch(Exception::NotFoundError&)
{
// If a detector cannot be found, it cannot be masked
++nonMaskedSpectra;
}
}
if( nonMaskedSpectra == 0 ) ++nonMaskedSpectra; // Avoid possible divide by zero
if(!requireDivide) requireDivide = (nonMaskedSpectra > 1);
beh->dataY(outIndex)[0] = static_cast<double>(nonMaskedSpectra);
// make regular progress reports and check for cancelling the algorithm
if ( outIndex % INTERVAL == 0 )
{
m_FracCompl += INTERVAL*prog4Copy;
if ( m_FracCompl > 1.0 )
m_FracCompl = 1.0;
progress(m_FracCompl);
interruption_point();
}
outIndex ++;
}
// Refresh the spectraDetectorMap
outputWS->generateSpectraMap();
if ( bhv == 1 && requireDivide )
{
g_log.debug() << "Running Divide algorithm to perform averaging.\n";
Mantid::API::IAlgorithm_sptr divide = createChildAlgorithm("Divide");
divide->initialize();
divide->setProperty<API::MatrixWorkspace_sptr>("LHSWorkspace", outputWS);
divide->setProperty<API::MatrixWorkspace_sptr>("RHSWorkspace", beh);
divide->setProperty<API::MatrixWorkspace_sptr>("OutputWorkspace", outputWS);
divide->execute();
}
g_log.debug() << name() << " created " << outIndex << " new grouped spectra\n";
return outIndex;
}
/**
* Takes a single valued histogram workspace and assesses which histograms are within the limits.
* Those that are not are masked on the input workspace.
* @param countsWS :: Input/Output Integrated workspace to diagnose.
* @param medianvec The median value calculated from the current counts.
* @param indexmap Index map.
* @param maskWS :: A mask workspace to apply.
* @return The number of detectors that failed the tests, not including those skipped.
*/
int MedianDetectorTest::doDetectorTests(const API::MatrixWorkspace_sptr countsWS, const std::vector<double> medianvec,
std::vector<std::vector<size_t> > indexmap, API::MatrixWorkspace_sptr maskWS)
{
g_log.debug("Applying the criteria to find failing detectors");
// A spectra can't fail if the statistics show its value is consistent with the mean value,
// check the error and how many errorbars we are away
const double minSigma = getProperty("SignificanceTest");
// prepare to report progress
const int numSpec(m_maxSpec - m_minSpec);
const int progStep = static_cast<int>(ceil(numSpec/30.0));
int steps(0);
const double deadValue(1.0);
int numFailed(0);
bool checkForMask = false;
Geometry::Instrument_const_sptr instrument = countsWS->getInstrument();
if (instrument != NULL)
{
checkForMask = ((instrument->getSource() != NULL) && (instrument->getSample() != NULL));
}
PARALLEL_FOR2(countsWS, maskWS)
for (int j=0;j<static_cast<int>(indexmap.size());++j)
{
std::vector<size_t> hists=indexmap.at(j);
double median=medianvec.at(j);
const size_t nhist = hists.size();
g_log.debug() << "new component with " <<nhist <<" spectra.\n";
for (size_t i = 0; i < nhist; ++i)
{
g_log.debug() << "Counts workspace index=" << i
<< ", Mask workspace index=" << hists.at(i) << std::endl;
PARALLEL_START_INTERUPT_REGION
++steps;
// update the progressbar information
if (steps % progStep == 0)
{
progress(advanceProgress(progStep*static_cast<double>(RTMarkDetects)/numSpec));
}
if (checkForMask)
{
const std::set<detid_t>& detids = countsWS->getSpectrum(i)->getDetectorIDs();
if (instrument->isDetectorMasked(detids))
{
maskWS->dataY(hists.at(i))[0] = deadValue;
continue;
}
if (instrument->isMonitor(detids))
{
// Don't include in calculation but don't mask it
continue;
}
}
const double signal = countsWS->dataY(hists.at(i))[0];
// Mask out NaN and infinite
if( boost::math::isinf(signal) || boost::math::isnan(signal) )
{
maskWS->dataY(hists.at(i))[0] = deadValue;
PARALLEL_ATOMIC
++numFailed;
continue;
}
const double error = minSigma*countsWS->readE(hists.at(i))[0];
if( (signal < median*m_loFrac && (signal-median < -error)) ||
(signal > median*m_hiFrac && (signal-median > error)) )
{
maskWS->dataY(hists.at(i))[0] = deadValue;
PARALLEL_ATOMIC
++numFailed;
}
PARALLEL_END_INTERUPT_REGION
}
PARALLEL_CHECK_INTERUPT_REGION
// Log finds
g_log.information() << numFailed << " spectra failed the median tests.\n";
}
return numFailed;
}
/** Generate peaks in the given output workspace
* @param functionmap :: map to contain the list of functions with key as their spectra
* @param dataWS :: output matrix workspace
*/
void GeneratePeaks::generatePeaks(const std::map<specid_t, std::vector<std::pair<double, API::IFunction_sptr> > >& functionmap,
API::MatrixWorkspace_sptr dataWS)
{
// Calcualte function
std::map<specid_t, std::vector<std::pair<double, API::IFunction_sptr> > >::const_iterator mapiter;
for (mapiter = functionmap.begin(); mapiter != functionmap.end(); ++mapiter)
{
// Get spec id and translated to wsindex in the output workspace
specid_t specid = mapiter->first;
specid_t wsindex;
if (m_newWSFromParent) wsindex = specid;
else wsindex = m_SpectrumMap[specid];
const std::vector<std::pair<double, API::IFunction_sptr> >& vec_centrefunc = mapiter->second;
size_t numpeaksinspec = mapiter->second.size();
for (size_t ipeak = 0; ipeak < numpeaksinspec; ++ipeak)
{
const std::pair<double, API::IFunction_sptr>& centrefunc = vec_centrefunc[ipeak];
// Determine boundary
API::IPeakFunction_sptr thispeak = getPeakFunction(centrefunc.second);
double centre = centrefunc.first;
double fwhm = thispeak->fwhm();
//
const MantidVec& X = dataWS->dataX(wsindex);
double leftbound = centre - m_numPeakWidth*fwhm;
if (ipeak > 0)
{
// Not left most peak.
API::IPeakFunction_sptr leftPeak = getPeakFunction(vec_centrefunc[ipeak-1].second);
double middle = 0.5*(centre + leftPeak->centre());
if (leftbound < middle)
leftbound = middle;
}
std::vector<double>::const_iterator left = std::lower_bound(X.begin(), X.end(), leftbound);
if (left == X.end())
left = X.begin();
double rightbound = centre + m_numPeakWidth*fwhm;
if (ipeak != numpeaksinspec-1)
{
// Not the rightmost peak
IPeakFunction_sptr rightPeak = getPeakFunction(vec_centrefunc[ipeak+1].second);
double middle = 0.5*(centre + rightPeak->centre());
if (rightbound > middle)
rightbound = middle;
}
std::vector<double>::const_iterator right = std::lower_bound(left + 1, X.end(), rightbound);
// Build domain & function
API::FunctionDomain1DVector domain(left, right); //dataWS->dataX(wsindex));
// Evaluate the function
API::FunctionValues values(domain);
centrefunc.second->function(domain, values);
// Put to output
std::size_t offset = (left-X.begin());
std::size_t numY = values.size();
for (std::size_t i = 0; i < numY; i ++)
{
dataWS->dataY(wsindex)[i + offset] += values[i];
}
} // ENDFOR(ipeak)
}
return;
}
/** Executes the algorithm
*
*/
void SplineBackground::exec()
{
API::MatrixWorkspace_sptr inWS = getProperty("InputWorkspace");
int spec = getProperty("WorkspaceIndex");
if (spec > static_cast<int>(inWS->getNumberHistograms()))
throw std::out_of_range("WorkspaceIndex is out of range.");
const MantidVec& X = inWS->readX(spec);
const MantidVec& Y = inWS->readY(spec);
const MantidVec& E = inWS->readE(spec);
const bool isHistogram = inWS->isHistogramData();
const int ncoeffs = getProperty("NCoeff");
const int k = 4; // order of the spline + 1 (cubic)
const int nbreak = ncoeffs - (k - 2);
if (nbreak <= 0)
throw std::out_of_range("Too low NCoeff");
gsl_bspline_workspace *bw;
gsl_vector *B;
gsl_vector *c, *w, *x, *y;
gsl_matrix *Z, *cov;
gsl_multifit_linear_workspace *mw;
double chisq;
int n = static_cast<int>(Y.size());
bool isMasked = inWS->hasMaskedBins(spec);
std::vector<int> masked(Y.size());
if (isMasked)
{
for(API::MatrixWorkspace::MaskList::const_iterator it=inWS->maskedBins(spec).begin();it!=inWS->maskedBins(spec).end();++it)
masked[it->first] = 1;
n -= static_cast<int>(inWS->maskedBins(spec).size());
}
if (n < ncoeffs)
{
g_log.error("Too many basis functions (NCoeff)");
throw std::out_of_range("Too many basis functions (NCoeff)");
}
/* allocate a cubic bspline workspace (k = 4) */
bw = gsl_bspline_alloc(k, nbreak);
B = gsl_vector_alloc(ncoeffs);
x = gsl_vector_alloc(n);
y = gsl_vector_alloc(n);
Z = gsl_matrix_alloc(n, ncoeffs);
c = gsl_vector_alloc(ncoeffs);
w = gsl_vector_alloc(n);
cov = gsl_matrix_alloc(ncoeffs, ncoeffs);
mw = gsl_multifit_linear_alloc(n, ncoeffs);
/* this is the data to be fitted */
int j = 0;
for (MantidVec::size_type i = 0; i < Y.size(); ++i)
{
if (isMasked && masked[i]) continue;
gsl_vector_set(x, j, (isHistogram ? (0.5*(X[i]+X[i+1])) : X[i])); // Middle of the bins, if a histogram
gsl_vector_set(y, j, Y[i]);
gsl_vector_set(w, j, E[i]>0.?1./(E[i]*E[i]):0.);
++j;
}
if (n != j)
{
gsl_bspline_free(bw);
gsl_vector_free(B);
gsl_vector_free(x);
gsl_vector_free(y);
gsl_matrix_free(Z);
gsl_vector_free(c);
gsl_vector_free(w);
gsl_matrix_free(cov);
gsl_multifit_linear_free(mw);
throw std::runtime_error("Assertion failed: n != j");
}
double xStart = X.front();
double xEnd = X.back();
/* use uniform breakpoints */
gsl_bspline_knots_uniform(xStart, xEnd, bw);
/* construct the fit matrix X */
for (int i = 0; i < n; ++i)
{
double xi=gsl_vector_get(x, i);
/* compute B_j(xi) for all j */
gsl_bspline_eval(xi, B, bw);
/* fill in row i of X */
for (j = 0; j < ncoeffs; ++j)
{
double Bj = gsl_vector_get(B, j);
gsl_matrix_set(Z, i, j, Bj);
}
}
/* do the fit */
gsl_multifit_wlinear(Z, w, y, c, cov, &chisq, mw);
/* output the smoothed curve */
API::MatrixWorkspace_sptr outWS = WorkspaceFactory::Instance().create(inWS,1,X.size(),Y.size());
{
outWS->getAxis(1)->setValue(0, inWS->getAxis(1)->spectraNo(spec));
double xi, yi, yerr;
for (MantidVec::size_type i=0;i<Y.size();i++)
{
xi = X[i];
gsl_bspline_eval(xi, B, bw);
gsl_multifit_linear_est(B, c, cov, &yi, &yerr);
outWS->dataY(0)[i] = yi;
outWS->dataE(0)[i] = yerr;
}
outWS->dataX(0) = X;
}
gsl_bspline_free(bw);
gsl_vector_free(B);
gsl_vector_free(x);
gsl_vector_free(y);
gsl_matrix_free(Z);
gsl_vector_free(c);
gsl_vector_free(w);
gsl_matrix_free(cov);
gsl_multifit_linear_free(mw);
setProperty("OutputWorkspace",outWS);
}
