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#include "directbaselinereader.h"
#include "msselection.h"
#include "../structures/timefrequencydata.h"
#include "../util/logger.h"
#include "../util/stopwatch.h"
#include <casacore/tables/DataMan/TiledStManAccessor.h>
#include <casacore/ms/MeasurementSets/MeasurementSet.h>
#include <vector>
#include <set>
#include <stdexcept>
DirectBaselineReader::DirectBaselineReader(const std::string &msFile) :
BaselineReader(msFile),
_ms(OpenMS())
{
}
DirectBaselineReader::~DirectBaselineReader()
{
ShowStatistics();
}
void DirectBaselineReader::initBaselineCache()
{
// Pass one time through the entire measurement set and store the rownumbers of
// the baselines.
Logger::Debug << "Determining sequence positions within file for direct baseline reader...\n";
std::vector<size_t> dataIdToSpw;
MetaData().GetDataDescToBandVector(dataIdToSpw);
casacore::ScalarColumn<int> antenna1Column(_ms, "ANTENNA1");
casacore::ScalarColumn<int> antenna2Column(_ms, "ANTENNA2");
casacore::ScalarColumn<int> dataDescIdColumn(_ms, "DATA_DESC_ID");
DummyProgressListener progress; // TODO
MSSelection msSelection(_ms, ObservationTimesPerSequence(), progress);
msSelection.Process(
[&](size_t rowIndex, size_t sequenceId, size_t /*timeIndexInSequence*/)
{
int
antenna1 = antenna1Column(rowIndex),
antenna2 = antenna2Column(rowIndex),
dataDescId = dataDescIdColumn(rowIndex);
int spectralWindow = dataIdToSpw[dataDescId];
addRowToBaselineCache(antenna1, antenna2, spectralWindow, sequenceId, rowIndex);
});
}
void DirectBaselineReader::addRowToBaselineCache(int antenna1, int antenna2, int spectralWindow, int sequenceId, size_t row)
{
BaselineCacheIndex searchItem;
searchItem.antenna1 = antenna1;
searchItem.antenna2 = antenna2;
searchItem.spectralWindow = spectralWindow;
searchItem.sequenceId = sequenceId;
std::map<BaselineCacheIndex,BaselineCacheValue>::iterator cacheItemIter = _baselineCache.find(searchItem);
if(cacheItemIter == _baselineCache.end())
{
BaselineCacheValue cacheValue;
cacheValue.rows.push_back(row);
_baselineCache.insert(std::make_pair(searchItem, cacheValue));
} else {
cacheItemIter->second.rows.push_back(row);
}
}
void DirectBaselineReader::addRequestRows(ReadRequest request, size_t requestIndex, std::vector<std::pair<size_t, size_t> > &rows)
{
BaselineCacheIndex searchItem;
searchItem.antenna1 = request.antenna1;
searchItem.antenna2 = request.antenna2;
searchItem.spectralWindow = request.spectralWindow;
searchItem.sequenceId = request.sequenceId;
std::map<BaselineCacheIndex,BaselineCacheValue>::iterator cacheItemIter = _baselineCache.find(searchItem);
if(cacheItemIter != _baselineCache.end())
{
const std::vector<size_t> &cacheRows = cacheItemIter->second.rows;
for(std::vector<size_t>::const_iterator j=cacheRows.begin(); j!=cacheRows.end(); ++j)
rows.push_back(std::pair<size_t, size_t>(*j, requestIndex));
}
}
void DirectBaselineReader::addRequestRows(FlagWriteRequest request, size_t requestIndex, std::vector<std::pair<size_t, size_t> > &rows)
{
BaselineCacheIndex searchItem;
searchItem.antenna1 = request.antenna1;
searchItem.antenna2 = request.antenna2;
searchItem.spectralWindow = request.spectralWindow;
searchItem.sequenceId = request.sequenceId;
std::map<BaselineCacheIndex,BaselineCacheValue>::iterator cacheItemIter = _baselineCache.find(searchItem);
if(cacheItemIter != _baselineCache.end())
{
const std::vector<size_t> &cacheRows = cacheItemIter->second.rows;
for(std::vector<size_t>::const_iterator j=cacheRows.begin();j!=cacheRows.end();++j)
rows.push_back(std::pair<size_t, size_t>(*j, requestIndex));
}
}
void DirectBaselineReader::PerformReadRequests(class ProgressListener& progress)
{
progress.OnStartTask("Reading measurement set");
Stopwatch stopwatch(true);
initializeMeta();
if(_baselineCache.empty())
initBaselineCache();
// Each element contains (row number, corresponding request index)
std::vector<std::pair<size_t, size_t> > rows;
for(size_t i=0;i!=_readRequests.size();++i)
addRequestRows(_readRequests[i], i, rows);
std::sort(rows.begin(), rows.end());
_results.resize(_readRequests.size());
for(size_t reqIndex=0; reqIndex!=_readRequests.size(); ++reqIndex)
{
const ReadRequest& request = _readRequests[reqIndex];
Result& result = _results[reqIndex];
size_t
startIndex = request.startIndex,
endIndex = request.endIndex,
band = request.spectralWindow,
channelCount = MetaData().FrequencyCount(band);
size_t width = endIndex-startIndex;
for(size_t p=0;p<Polarizations().size();++p)
{
if(ReadData()) {
result._realImages.emplace_back(Image2D::CreateZeroImagePtr(width, channelCount));
result._imaginaryImages.emplace_back(Image2D::CreateZeroImagePtr(width, channelCount));
}
if(ReadFlags()) {
// The flags should be initialized to true, as a baseline might
// miss some time scans that other baselines do have, and these
// should be flagged.
result._flags.emplace_back(Mask2D::CreateSetMaskPtr<true>(width, channelCount));
}
}
result._uvw.resize(width);
}
casacore::ScalarColumn<double> timeColumn(_ms, "TIME");
casacore::ArrayColumn<float> weightColumn(_ms, "WEIGHT");
casacore::ArrayColumn<double> uvwColumn(_ms, "UVW");
casacore::ArrayColumn<bool> flagColumn(_ms, "FLAG");
std::unique_ptr<casacore::ArrayColumn<casacore::Complex>> modelColumn, dataColumn;
if(ReadData())
dataColumn.reset( new casacore::ArrayColumn<casacore::Complex>(_ms, DataColumnName()) );
if(SubtractModel())
modelColumn.reset( new casacore::ArrayColumn<casacore::Complex>(_ms, "MODEL_DATA") );
for(size_t i=0; i!=rows.size(); ++i)
{
progress.OnProgress(i, rows.size());
std::pair<size_t, size_t> p = rows[i];
size_t rowIndex = p.first;
size_t requestIndex = p.second;
double time = timeColumn(rowIndex);
const ReadRequest &request = _readRequests[requestIndex];
size_t
timeIndex = ObservationTimes(request.sequenceId).find(time)->second,
startIndex = request.startIndex,
endIndex = request.endIndex,
band = request.spectralWindow;
bool timeIsSelected = timeIndex>=startIndex && timeIndex<endIndex;
if(ReadData() && timeIsSelected)
{
//if(BaselineReader::DataKind() == WeightData)
// readWeights(requestIndex, timeIndex-startIndex, MetaData().FrequencyCount(band), weightColumn(rowIndex));
//else
if(modelColumn == nullptr)
readTimeData(requestIndex, timeIndex-startIndex, MetaData().FrequencyCount(band), (*dataColumn)(rowIndex), 0);
else {
const casacore::Array<casacore::Complex> model = (*modelColumn)(rowIndex);
readTimeData(requestIndex, timeIndex-startIndex, MetaData().FrequencyCount(band), (*dataColumn)(rowIndex), &model);
}
}
if(ReadFlags() && timeIsSelected) {
readTimeFlags(requestIndex, timeIndex-startIndex, MetaData().FrequencyCount(band), flagColumn(rowIndex));
}
if(timeIsSelected) {
casacore::Array<double> arr = uvwColumn(rowIndex);
casacore::Array<double>::const_iterator i = arr.begin();
_results[requestIndex]._uvw[timeIndex-startIndex].u = *i;
++i;
_results[requestIndex]._uvw[timeIndex-startIndex].v = *i;
++i;
_results[requestIndex]._uvw[timeIndex-startIndex].w = *i;
}
}
_readRequests.clear();
progress.OnFinish();
}
std::vector<UVW> DirectBaselineReader::ReadUVW(unsigned antenna1, unsigned antenna2, unsigned spectralWindow, unsigned sequenceId)
{
Stopwatch stopwatch(true);
initializeMeta();
if(_baselineCache.empty())
initBaselineCache();
const std::map<double, size_t> &observationTimes = ObservationTimes(sequenceId);
// Each element contains (row number, corresponding request index)
std::vector<std::pair<size_t, size_t> > rows;
ReadRequest request;
request.antenna1 = antenna1;
request.antenna2 = antenna2;
request.spectralWindow = spectralWindow;
request.sequenceId = sequenceId;
request.startIndex = 0;
request.endIndex = observationTimes.size();
addRequestRows(request, 0, rows);
std::sort(rows.begin(), rows.end());
size_t width = observationTimes.size();
casacore::ScalarColumn<double> timeColumn(_ms, "TIME");
casacore::ArrayColumn<double> uvwColumn(_ms, "UVW");
std::vector<UVW> uvws;
uvws.resize(width);
for(std::vector<std::pair<size_t, size_t> >::const_iterator i=rows.begin();i!=rows.end();++i) {
size_t rowIndex = i->first;
double time = timeColumn(rowIndex);
size_t
timeIndex = observationTimes.find(time)->second;
casacore::Array<double> arr = uvwColumn(rowIndex);
casacore::Array<double>::const_iterator j = arr.begin();
UVW &uvw = uvws[timeIndex];
uvw.u = *j;
++j;
uvw.v = *j;
++j;
uvw.w = *j;
}
Logger::Debug << "Read of UVW took: " << stopwatch.ToString() << '\n';
return uvws;
}
void DirectBaselineReader::PerformFlagWriteRequests()
{
Stopwatch stopwatch(true);
initializeMeta();
if(_baselineCache.empty())
initBaselineCache();
// Each element contains (row number, corresponding request index)
std::vector<std::pair<size_t, size_t> > rows;
for(size_t i=0;i!=_writeRequests.size();++i)
addRequestRows(_writeRequests[i], i, rows);
std::sort(rows.begin(), rows.end());
_ms.reopenRW();
casacore::ScalarColumn<double> timeColumn(_ms, "TIME");
casacore::ArrayColumn<bool> flagColumn(_ms, "FLAG");
for(std::vector<FlagWriteRequest>::iterator i=_writeRequests.begin();i!=_writeRequests.end();++i)
{
size_t band = i->spectralWindow;
if(MetaData().FrequencyCount(band) != i->flags[0]->Height())
{
std::cerr << "The frequency count in the measurement set (" << MetaData().FrequencyCount(band) << ") does not match the image!" << std::endl;
}
if(i->endIndex - i->startIndex != i->flags[0]->Width())
{
std::cerr << "The number of time scans to write in the measurement set (" << (i->endIndex - i->startIndex) << ") does not match the image (" << i->flags[0]->Width() << ") !" << std::endl;
}
}
size_t rowsWritten = 0;
for(std::vector<std::pair<size_t, size_t> >::const_iterator i=rows.begin();i!=rows.end();++i)
{
size_t rowIndex = i->first;
FlagWriteRequest &request = _writeRequests[i->second];
double time = timeColumn(rowIndex);
size_t timeIndex = ObservationTimes(request.sequenceId).find(time)->second;
if(timeIndex >= request.startIndex + request.leftBorder && timeIndex < request.endIndex - request.rightBorder)
{
casacore::Array<bool> flag = flagColumn(rowIndex);
casacore::Array<bool>::iterator j = flag.begin();
for(size_t f=0;f<(size_t) MetaData().FrequencyCount(request.spectralWindow);++f) {
for(size_t p=0;p<Polarizations().size();++p)
{
*j = request.flags[p]->Value(timeIndex - request.startIndex, f);
++j;
}
}
flagColumn.basePut(rowIndex, flag);
++rowsWritten;
}
}
_writeRequests.clear();
Logger::Debug << rowsWritten << "/" << rows.size() << " rows written in " << stopwatch.ToString() << '\n';
}
void DirectBaselineReader::readTimeData(size_t requestIndex, size_t xOffset, int frequencyCount, const casacore::Array<casacore::Complex> data, const casacore::Array<casacore::Complex> *model)
{
casacore::Array<casacore::Complex>::const_iterator i = data.begin();
casacore::Array<casacore::Complex>::const_iterator m;
if(DataKind() == ResidualData)
m = model->begin();
size_t polarizationCount = Polarizations().size();
for(size_t f=0;f<(size_t) frequencyCount;++f) {
num_t rv,iv;
for(size_t p=0;p<polarizationCount;++p)
{
if(DataKind() == ResidualData)
{
const casacore::Complex &iData = *i;
const casacore::Complex &iModel = *m;
++i; ++m;
rv = iData.real() - iModel.real();
iv = iData.imag() - iModel.imag();
} else {
const casacore::Complex &complex = *i;
++i;
rv = complex.real();
iv = complex.imag();
}
_results[requestIndex]._realImages[p]->SetValue(xOffset, f, rv);
_results[requestIndex]._imaginaryImages[p]->SetValue(xOffset, f, iv);
}
}
}
void DirectBaselineReader::readTimeFlags(size_t requestIndex, size_t xOffset, int frequencyCount, const casacore::Array<bool> flag)
{
size_t polarizationCount = Polarizations().size();
casacore::Array<bool>::const_iterator j = flag.begin();
for(size_t f=0;f<(size_t) frequencyCount;++f) {
for(size_t p=0;p<polarizationCount;++p)
{
bool v = *j;
++j;
_results[requestIndex]._flags[p]->SetValue(xOffset, f, v);
}
}
}
void DirectBaselineReader::readWeights(size_t requestIndex, size_t xOffset, int frequencyCount, const casacore::Array<float> weight)
{
size_t polarizationCount = Polarizations().size();
casacore::Array<float>::const_iterator j = weight.begin();
std::vector<float> values(polarizationCount);
for(size_t p=0;p<polarizationCount;++p) {
values[p] = *j;
++j;
}
for(size_t f=0;f<(size_t) frequencyCount;++f) {
for(size_t p=0;p<polarizationCount;++p)
{
_results[requestIndex]._realImages[p]->SetValue(xOffset, f, values[p]);
_results[requestIndex]._imaginaryImages[p]->SetValue(xOffset, f, 0.0);
}
}
}
void DirectBaselineReader::ShowStatistics()
{
try {
casacore::ROTiledStManAccessor accessor(_ms, "LofarStMan");
std::stringstream s;
accessor.showCacheStatistics(s);
Logger::Debug << s.str();
} catch(std::exception &e)
{
}
}
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