uint64_t File::readiOrder() {
uint64_t v;
H5::Group group(openGroup( "dark" ));
H5::Attribute a(group.openAttribute("iOrder"));
a.read( H5::PredType::NATIVE_UINT64, &v );
return v;
}
bool XMLBase::isVector(const char* elementName)
{
openGroup();
// Open dataset and throw if it does not exist
xml_node dataset = _groupOpened.node().find_child_by_attribute(_nodeDset.c_str(), _attrName.c_str(), elementName);
if (!dataset)
{
std::ostringstream oss;
oss << "Dataset '" << elementName << "' does not exist!";
throw CadetException(oss.str());
}
// Read text and attributes
size_t rank = dataset.attribute(_attrRank.c_str()).as_int();
std::string dims_str = dataset.attribute(_attrDims.c_str()).value();
// Get dims and compute buffer size
std::vector<std::string> dims_vec = split(dims_str, _dimsSeparator.c_str());
int items = 1;
for (size_t i = 0; i < rank; ++i)
{
int j;
std::stringstream ss(dims_vec.at(i));
ss >> j;
items *= j;
}
closeGroup();
return items > 1;
}
bool XMLBase::exists(const char* elementName)
{
openGroup();
bool exists = _groupOpened.node().child(elementName);
closeGroup();
return exists;
}
void File::writeAttribute( const std::string &name, double v ) {
H5::Group group(openGroup( "parameters" ));
hsize_t dataSize = 1;
H5::DataSpace spaceParameters(1,&dataSize,&dataSize);
H5::Attribute a(group.createAttribute(name,H5::PredType::NATIVE_DOUBLE,
spaceParameters));
a.write( H5::PredType::NATIVE_DOUBLE, &v );
}
void File::readClasses() {
hsize_t dims;
m_iOrder = readiOrder();
H5::Group group(openGroup( "dark" ));
H5::DataSet classes(group.openDataSet("classes"));
assert( classes.getSpace().getSimpleExtentNdims() == 1 );
classes.getSpace().getSimpleExtentDims (&dims);
m_classes.insert(m_classes.end(),dims,classEntry());
classes.read( &(m_classes[0]), m_classType );
}
uint64_t File::getDarkCount() const {
hsize_t dims[2];
H5::Group group(openGroup( "dark" ));
H5::DataSet pos(group.openDataSet("position"));
assert( pos.getSpace().getSimpleExtentNdims() == 2 );
pos.getSpace().getSimpleExtentDims (dims);
assert( dims[1] == 3 );
return dims[0];
}
void File::writeClasses() {
H5::Group group(openGroup( "dark" ));
H5::DataSet classes(group.openDataSet("classes"));
assert( classes.getSpace().getSimpleExtentNdims() == 1 );
hsize_t dataSize = m_classes.size();
hsize_t Zero = 0;
H5::DataSpace spaceDisk(1,&dataSize);
H5::DataSpace spaceMem(1,&dataSize);
classes.extend(&dataSize);
spaceDisk.selectHyperslab(H5S_SELECT_SET,&dataSize,&Zero);
spaceMem.selectHyperslab(H5S_SELECT_SET,&dataSize,&Zero);
classes.write( &(m_classes[0]), m_classType, spaceMem, spaceDisk );
//classes.flush(H5F_SCOPE_LOCAL);
}
//--------------------------------------------------------------------------
// Function: CommonFG::openGroup
///\brief This is an overloaded member function, provided for convenience.
/// It differs from the above function in that it takes an
/// \c H5std_string for \a name.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group CommonFG::openGroup( const H5std_string& name ) const
{
return( openGroup( name.c_str() ));
}
/** Goes thoguh a histogram NXS file and counts the number of pixels.
* It also determines the name of the data field and axis to load
*
* @param nexusfilename :: nxs file path
* @param entry_name :: name of the entry
* @param bankNames :: returns the list of bank names
*/
void LoadTOFRawNexus::countPixels(const std::string &nexusfilename,
const std::string &entry_name,
std::vector<std::string> &bankNames) {
m_numPixels = 0;
m_numBins = 0;
m_dataField = "";
m_axisField = "";
bankNames.clear();
// Create the root Nexus class
auto file = new ::NeXus::File(nexusfilename);
// Open the default data group 'entry'
file->openGroup(entry_name, "NXentry");
// Also pop into the instrument
file->openGroup("instrument", "NXinstrument");
// Look for all the banks
std::map<std::string, std::string> entries = file->getEntries();
std::map<std::string, std::string>::iterator it;
for (it = entries.begin(); it != entries.end(); ++it) {
std::string name = it->first;
if (name.size() > 4) {
if (name.substr(0, 4) == "bank") {
// OK, this is some bank data
file->openGroup(name, it->second);
// -------------- Find the data field name ----------------------------
if (m_dataField.empty()) {
std::map<std::string, std::string> entries = file->getEntries();
std::map<std::string, std::string>::iterator it;
for (it = entries.begin(); it != entries.end(); ++it) {
if (it->second == "SDS") {
file->openData(it->first);
if (file->hasAttr("signal")) {
int signal = 0;
file->getAttr("signal", signal);
if (signal == m_signalNo) {
// That's the right signal!
m_dataField = it->first;
// Find the corresponding X axis
std::string axes;
m_assumeOldFile = false;
if (!file->hasAttr("axes")) {
if (1 != m_signalNo) {
throw std::runtime_error(
"Your chosen signal number, " +
Strings::toString(m_signalNo) +
", corresponds to the data field '" + m_dataField +
"' has no 'axes' attribute specifying.");
} else {
m_assumeOldFile = true;
axes = "x_pixel_offset,y_pixel_offset,time_of_flight";
}
}
if (!m_assumeOldFile) {
file->getAttr("axes", axes);
}
std::vector<std::string> allAxes;
boost::split(allAxes, axes,
boost::algorithm::detail::is_any_ofF<char>(","));
if (allAxes.size() != 3)
throw std::runtime_error(
"Your chosen signal number, " +
Strings::toString(m_signalNo) +
", corresponds to the data field '" + m_dataField +
"' which has only " +
Strings::toString(allAxes.size()) +
" dimension. Expected 3 dimensions.");
m_axisField = allAxes.back();
g_log.information() << "Loading signal " << m_signalNo << ", "
<< m_dataField << " with axis "
<< m_axisField << std::endl;
file->closeData();
break;
} // Data has a 'signal' attribute
} // Yes, it is a data field
file->closeData();
} // each entry in the group
}
}
file->closeGroup();
} // bankX name
}
} // each entry
if (m_dataField.empty())
throw std::runtime_error("Your chosen signal number, " +
Strings::toString(m_signalNo) +
", was not found in any of the data fields of any "
"'bankX' group. Cannot load file.");
for (it = entries.begin(); it != entries.end(); ++it) {
std::string name = it->first;
if (name.size() > 4) {
if (name.substr(0, 4) == "bank") {
// OK, this is some bank data
file->openGroup(name, it->second);
std::map<std::string, std::string> entries = file->getEntries();
if (entries.find("pixel_id") != entries.end()) {
bankNames.push_back(name);
// Count how many pixels in the bank
file->openData("pixel_id");
std::vector<int64_t> dims = file->getInfo().dims;
file->closeData();
if (!dims.empty()) {
size_t newPixels = 1;
for (auto dim : dims)
newPixels *= dim;
m_numPixels += newPixels;
}
} else {
bankNames.push_back(name);
// Get the number of pixels from the offsets arrays
file->openData("x_pixel_offset");
std::vector<int64_t> xdim = file->getInfo().dims;
file->closeData();
file->openData("y_pixel_offset");
std::vector<int64_t> ydim = file->getInfo().dims;
file->closeData();
if (!xdim.empty() && !ydim.empty()) {
m_numPixels += (xdim[0] * ydim[0]);
}
}
if (entries.find(m_axisField) != entries.end()) {
// Get the size of the X vector
file->openData(m_axisField);
std::vector<int64_t> dims = file->getInfo().dims;
// Find the units, if available
if (file->hasAttr("units"))
file->getAttr("units", m_xUnits);
else
m_xUnits = "microsecond"; // use default
file->closeData();
if (!dims.empty())
m_numBins = dims[0] - 1;
}
file->closeGroup();
} // bankX name
}
} // each entry
file->close();
delete file;
}
/** Load a single bank into the workspace
*
* @param nexusfilename :: file to open
* @param entry_name :: NXentry name
* @param bankName :: NXdata bank name
* @param WS :: workspace to modify
* @param id_to_wi :: det ID to workspace index mapping
*/
void LoadTOFRawNexus::loadBank(const std::string &nexusfilename,
const std::string &entry_name,
const std::string &bankName,
API::MatrixWorkspace_sptr WS,
const detid2index_map &id_to_wi) {
g_log.debug() << "Loading bank " << bankName << std::endl;
// To avoid segfaults on RHEL5/6 and Fedora
m_fileMutex.lock();
// Navigate to the point in the file
auto file = new ::NeXus::File(nexusfilename);
file->openGroup(entry_name, "NXentry");
file->openGroup("instrument", "NXinstrument");
file->openGroup(bankName, "NXdetector");
size_t m_numPixels = 0;
std::vector<uint32_t> pixel_id;
if (!m_assumeOldFile) {
// Load the pixel IDs
file->readData("pixel_id", pixel_id);
m_numPixels = pixel_id.size();
if (m_numPixels == 0) {
file->close();
m_fileMutex.unlock();
g_log.warning() << "Invalid pixel_id data in " << bankName << std::endl;
return;
}
} else {
// Load the x and y pixel offsets
std::vector<float> xoffsets;
std::vector<float> yoffsets;
file->readData("x_pixel_offset", xoffsets);
file->readData("y_pixel_offset", yoffsets);
m_numPixels = xoffsets.size() * yoffsets.size();
if (0 == m_numPixels) {
file->close();
m_fileMutex.unlock();
g_log.warning() << "Invalid (x,y) offsets in " << bankName << std::endl;
return;
}
size_t bankNum = 0;
if (bankName.size() > 4) {
if (bankName.substr(0, 4) == "bank") {
bankNum = boost::lexical_cast<size_t>(bankName.substr(4));
bankNum--;
} else {
file->close();
m_fileMutex.unlock();
g_log.warning() << "Invalid bank number for " << bankName << std::endl;
return;
}
}
// All good, so construct the pixel ID listing
size_t numX = xoffsets.size();
size_t numY = yoffsets.size();
for (size_t i = 0; i < numX; i++) {
for (size_t j = 0; j < numY; j++) {
pixel_id.push_back(
static_cast<uint32_t>(j + numY * (i + numX * bankNum)));
}
}
}
size_t iPart = 0;
if (m_spec_max != Mantid::EMPTY_INT()) {
uint32_t ifirst = pixel_id[0];
range_check out_range(m_spec_min, m_spec_max, id_to_wi);
auto newEnd = std::remove_if(pixel_id.begin(), pixel_id.end(), out_range);
pixel_id.erase(newEnd, pixel_id.end());
// check if beginning or end of array was erased
if (ifirst != pixel_id[0])
iPart = m_numPixels - pixel_id.size();
m_numPixels = pixel_id.size();
if (m_numPixels == 0) {
file->close();
m_fileMutex.unlock();
g_log.warning() << "No pixels from " << bankName << std::endl;
return;
};
}
// Load the TOF vector
std::vector<float> tof;
file->readData(m_axisField, tof);
size_t m_numBins = tof.size() - 1;
if (tof.size() <= 1) {
file->close();
m_fileMutex.unlock();
g_log.warning() << "Invalid " << m_axisField << " data in " << bankName
<< std::endl;
return;
}
// Make a shared pointer
MantidVecPtr Xptr;
MantidVec &X = Xptr.access();
X.resize(tof.size(), 0);
X.assign(tof.begin(), tof.end());
// Load the data. Coerce ints into double.
std::string errorsField = "";
std::vector<double> data;
file->openData(m_dataField);
file->getDataCoerce(data);
if (file->hasAttr("errors"))
file->getAttr("errors", errorsField);
file->closeData();
// Load the errors
bool hasErrors = !errorsField.empty();
std::vector<double> errors;
if (hasErrors) {
try {
file->openData(errorsField);
file->getDataCoerce(errors);
file->closeData();
} catch (...) {
g_log.information() << "Error loading the errors field, '" << errorsField
<< "' for bank " << bankName
<< ". Will use sqrt(counts). " << std::endl;
hasErrors = false;
}
}
/*if (data.size() != m_numBins * m_numPixels)
{ file->close(); m_fileMutex.unlock(); g_log.warning() << "Invalid size of '"
<< m_dataField << "' data in " << bankName << std::endl; return; }
if (hasErrors && (errors.size() != m_numBins * m_numPixels))
{ file->close(); m_fileMutex.unlock(); g_log.warning() << "Invalid size of '"
<< errorsField << "' errors in " << bankName << std::endl; return; }
*/
// Have all the data I need
m_fileMutex.unlock();
file->close();
for (size_t i = iPart; i < iPart + m_numPixels; i++) {
// Find the workspace index for this detector
detid_t pixelID = pixel_id[i - iPart];
size_t wi = id_to_wi.find(pixelID)->second;
// Set the basic info of that spectrum
ISpectrum *spec = WS->getSpectrum(wi);
spec->setSpectrumNo(specid_t(wi + 1));
spec->setDetectorID(pixel_id[i - iPart]);
// Set the shared X pointer
spec->setX(X);
// Extract the Y
MantidVec &Y = spec->dataY();
Y.assign(data.begin() + i * m_numBins, data.begin() + (i + 1) * m_numBins);
MantidVec &E = spec->dataE();
if (hasErrors) {
// Copy the errors from the loaded document
E.assign(errors.begin() + i * m_numBins,
errors.begin() + (i + 1) * m_numBins);
} else {
// Now take the sqrt(Y) to give E
E = Y;
std::transform(E.begin(), E.end(), E.begin(), (double (*)(double))sqrt);
}
}
// Done!
}
void File::copyData( const File &src ) {
uint64_t N = src.getDarkCount();
uint64_t O = src.m_iOrder;
uint64_t i;
hsize_t n;
hsize_t off[2], Dims[2];
std::cout << "Copying data from " << src.m_name << std::endl;
H5::Group dstGroup(openGroup( "dark" ));
H5::Group srcGroup(src.openGroup( "dark" ));
H5::DataSet dst_pos( dstGroup.openDataSet("position") );
H5::DataSet dst_vel( dstGroup.openDataSet("velocity") );
//H5::DataSet dst_cls( dstGroup.openDataSet("class") );
H5::DataSet src_pos( srcGroup.openDataSet("position") );
H5::DataSet src_vel( srcGroup.openDataSet("velocity") );
//H5::DataSet src_cls( srcGroup.openDataSet("class") );
double *buffer = new double[3*CHUNK_SIZE];
src_pos.getSpace().getSimpleExtentDims(Dims);
H5::DataSpace src_spaceDisk(2,Dims);
dst_pos.getSpace().getSimpleExtentDims(Dims);
H5::DataSpace dst_spaceDisk(2,Dims);
for ( i=0; i<N; i+=n ) {
n = N-i > CHUNK_SIZE ? CHUNK_SIZE : N-i;
Dims[0] = n; Dims[1] = 3;
H5::DataSpace spaceMem(2,Dims);
Dims[0] = n; Dims[1] = 3;
off[0] = off[1] = 0;
spaceMem.selectHyperslab(H5S_SELECT_SET,Dims,off);
off[0] = i; off[1] = 0;
src_spaceDisk.selectHyperslab(H5S_SELECT_SET,Dims,off);
src_pos.read( buffer, H5::PredType::NATIVE_DOUBLE,
spaceMem, src_spaceDisk );
off[0] = i+O; off[1] = 0;
dst_spaceDisk.selectHyperslab(H5S_SELECT_SET,Dims,off);
dst_pos.write( buffer, H5::PredType::NATIVE_DOUBLE,
spaceMem, dst_spaceDisk );
off[0] = i; off[1] = 0;
src_spaceDisk.selectHyperslab(H5S_SELECT_SET,Dims,off);
src_vel.read( buffer, H5::PredType::NATIVE_DOUBLE,
spaceMem, src_spaceDisk );
off[0] = i+O; off[1] = 0;
dst_spaceDisk.selectHyperslab(H5S_SELECT_SET,Dims,off);
dst_vel.write( buffer, H5::PredType::NATIVE_DOUBLE,
spaceMem, dst_spaceDisk );
}
delete [] buffer;
}
void File::readAttribute( const std::string &name, double &v ) {
H5::Group group(openGroup( "parameters" ));
H5::Attribute a(group.openAttribute(name));
a.read( H5::PredType::NATIVE_DOUBLE, &v );
}
void File::copyAttributes( const File *src ) {
H5::Group gdst(openGroup( "parameters" ));
H5::Group gsrc(src->openGroup( "parameters" ));
gsrc.iterateAttrs(doAddAttribute, NULL, (void *)&gdst);
}
