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#include "msprovider.h"
#include "msreaders/msreader.h"
#include <aocommon/logger.h>
#include <casacore/ms/MeasurementSets/MeasurementSet.h>
#include <casacore/tables/DataMan/DataManager.h>
#include <casacore/tables/Tables/ScalarColumn.h>
#include <casacore/tables/Tables/ArrColDesc.h>
#include "../structures/msselection.h"
using aocommon::Logger;
using schaapcommon::reordering::MSSelection;
using schaapcommon::reordering::StorageManagerType;
namespace wsclean {
namespace {
void FillModelColumn(const casacore::ArrayColumn<casacore::Complex>& dataColumn,
casacore::ArrayColumn<casacore::Complex>& modelColumn) {
casacore::Array<casacore::Complex> zeroArray;
for (size_t row = 0; row != dataColumn.nrow(); ++row) {
zeroArray.resize(dataColumn.shape(row));
zeroArray = casacore::Complex(0.0, 0.0);
modelColumn.put(row, zeroArray);
}
}
} // namespace
MSProvider::~MSProvider() {}
void MSProvider::GetRowRange(casacore::MeasurementSet& ms,
const MSSelection& selection, size_t& startRow,
size_t& endRow) {
startRow = 0;
endRow = ms.nrow();
if (selection.HasInterval()) {
Logger::Info << "Determining first and last row index... ";
Logger::Info.Flush();
casacore::ROScalarColumn<double> timeColumn(
ms, casacore::MS::columnName(casacore::MSMainEnums::TIME));
double time = timeColumn(0);
size_t timestepIndex = 0;
for (size_t row = 0; row != ms.nrow(); ++row) {
if (time != timeColumn(row)) {
++timestepIndex;
if (timestepIndex == selection.IntervalStart()) startRow = row;
if (timestepIndex == selection.IntervalEnd()) {
endRow = row;
break;
}
time = timeColumn(row);
}
}
Logger::Info << "DONE (" << startRow << '-' << endRow << ")\n";
}
}
void MSProvider::GetRowRangeAndIDMap(casacore::MeasurementSet& ms,
const MSSelection& selection,
size_t& startRow, size_t& endRow,
const std::set<size_t>& dataDescIds,
std::vector<size_t>& idToMSRow) {
startRow = 0;
endRow = ms.nrow();
Logger::Info << "Mapping measurement set rows... ";
Logger::Info.Flush();
casacore::ArrayColumn<double> uvwColumn(
ms, casacore::MS::columnName(casacore::MSMainEnums::UVW));
casacore::ScalarColumn<int> antenna1Column(
ms, casacore::MS::columnName(casacore::MSMainEnums::ANTENNA1));
casacore::ScalarColumn<int> antenna2Column(
ms, casacore::MS::columnName(casacore::MSMainEnums::ANTENNA2));
casacore::ScalarColumn<int> fieldIdColumn(
ms, casacore::MS::columnName(casacore::MSMainEnums::FIELD_ID));
casacore::ScalarColumn<double> timeColumn(
ms, casacore::MS::columnName(casacore::MSMainEnums::TIME));
casacore::ScalarColumn<int> dataDescIdColumn(
ms, ms.columnName(casacore::MSMainEnums::DATA_DESC_ID));
double time = timeColumn(0);
size_t timestepIndex = 0;
bool timeStepSelected =
!selection.HasInterval() || timestepIndex == selection.IntervalStart();
for (size_t row = 0; row != ms.nrow(); ++row) {
if (time != timeColumn(row)) {
++timestepIndex;
if (selection.HasInterval() &&
timestepIndex == selection.IntervalStart()) {
startRow = row;
timeStepSelected = true;
}
if (timestepIndex == selection.IntervalEnd()) {
if (selection.HasInterval()) endRow = row;
break;
}
time = timeColumn(row);
}
if (timeStepSelected) {
const int a1 = antenna1Column(row), a2 = antenna2Column(row),
fieldId = fieldIdColumn(row),
dataDescId = dataDescIdColumn(row);
casacore::Vector<double> uvw = uvwColumn(row);
std::set<size_t>::const_iterator dataDescIdIter =
dataDescIds.find(dataDescId);
if (selection.IsSelected(fieldId, timestepIndex, a1, a2, uvw.data()) &&
dataDescIdIter != dataDescIds.end())
idToMSRow.push_back(row);
}
}
Logger::Info << "DONE (" << startRow << '-' << endRow << "; "
<< idToMSRow.size() << " rows)\n";
}
void MSProvider::InitializeModelColumn(casacore::MeasurementSet& ms,
const std::string& model_column_name,
StorageManagerType type) {
casacore::ArrayColumn<casacore::Complex> data_column(
ms, casacore::MS::columnName(casacore::MSMainEnums::DATA));
ms.reopenRW();
if (ms.tableDesc().isColumn(model_column_name)) {
casacore::ArrayColumn<casacore::Complex> model_column(ms,
model_column_name);
const bool is_defined = model_column.isDefined(0);
bool is_same_shape = false;
if (is_defined) {
casacore::IPosition model_shape = model_column.shape(0);
casacore::IPosition data_shape = data_column.shape(0);
is_same_shape = model_shape == data_shape;
}
if (!is_defined || !is_same_shape) {
Logger::Warn << "WARNING: Your model column does not have the same shape "
"as your data column: resetting MODEL column.\n";
FillModelColumn(data_column, model_column);
}
} else { // No column exists with the given model_column_name
Logger::Info << "Adding model data column " << model_column_name << "... ";
Logger::Info.Flush();
std::string st_man_name = "StandardStMan";
bool use_direct_column = false;
switch (type) {
case StorageManagerType::Default:
break;
case StorageManagerType::StokesI:
st_man_name = "StokesIStMan";
use_direct_column = true;
}
casacore::DataManagerCtor constructor =
casacore::DataManager::getCtor(st_man_name);
std::unique_ptr<casacore::DataManager> st_man(
constructor(model_column_name + "_dm", casacore::Record()));
if (!st_man)
throw std::runtime_error(
st_man_name +
" storage manager requested, but it is not available in "
"casacore");
casacore::ArrayColumnDesc<casacore::Complex> model_column_desc(
model_column_name);
if (use_direct_column) {
model_column_desc.setShape(data_column.shape(0));
model_column_desc.setOptions(casacore::ColumnDesc::Direct |
casacore::ColumnDesc::FixedShape);
}
casacore::TableDesc table_desc;
table_desc.addColumn(model_column_desc, model_column_name);
ms.addColumn(table_desc, *st_man, true);
casacore::ArrayColumn<casacore::Complex> model_column(ms,
model_column_name);
FillModelColumn(data_column, model_column);
Logger::Info << "DONE\n";
}
}
casacore::ArrayColumn<float> MSProvider::InitializeImagingWeightColumn(
casacore::MeasurementSet& ms) {
ms.reopenRW();
casacore::ArrayColumn<casacore::Complex> dataColumn(
ms, casacore::MS::columnName(casacore::MSMainEnums::DATA));
if (ms.tableDesc().isColumn("IMAGING_WEIGHT_SPECTRUM")) {
return casacore::ArrayColumn<float>(ms, "IMAGING_WEIGHT_SPECTRUM");
} else {
Logger::Info << "Adding imaging weight spectrum column... ";
Logger::Info.Flush();
casacore::IPosition shape = dataColumn.shape(0);
casacore::ArrayColumnDesc<float> modelColumnDesc("IMAGING_WEIGHT_SPECTRUM",
shape);
try {
ms.addColumn(modelColumnDesc, "StandardStMan", true, true);
} catch (std::exception& e) {
ms.addColumn(modelColumnDesc, "StandardStMan", false, true);
}
casacore::Array<float> zeroArray(shape);
for (casacore::Array<float>::contiter i = zeroArray.cbegin();
i != zeroArray.cend(); ++i)
*i = 0.0;
casacore::ArrayColumn<float> imgWColumn(ms, "IMAGING_WEIGHT_SPECTRUM");
for (size_t row = 0; row != ms.nrow(); ++row)
imgWColumn.put(row, zeroArray);
Logger::Info << "DONE\n";
return imgWColumn;
}
}
std::set<aocommon::PolarizationEnum> MSProvider::GetMSPolarizations(
size_t data_desc_id, const casacore::MeasurementSet& ms) {
// First get the polarization index corresponding with the data desc id
casacore::MSDataDescription data_description_table = ms.dataDescription();
casacore::ScalarColumn<int> polarization_index_column(
data_description_table,
casacore::MSDataDescription::columnName(
casacore::MSDataDescription::POLARIZATION_ID));
const size_t polarization_index = polarization_index_column(data_desc_id);
casacore::MSPolarization pol_table = ms.polarization();
std::set<aocommon::PolarizationEnum> pols;
casacore::ArrayColumn<int> corr_type_column(
pol_table, casacore::MSPolarization::columnName(
casacore::MSPolarizationEnums::CORR_TYPE));
// Now get the information corresponding with the polarization index
casacore::Array<int> corr_type_vec(corr_type_column(polarization_index));
for (casacore::Array<int>::const_contiter p = corr_type_vec.cbegin();
p != corr_type_vec.cend(); ++p) {
pols.emplace(aocommon::Polarization::AipsIndexToEnum(*p));
}
return pols;
}
void MSProvider::ResetModelColumn() {
std::unique_ptr<MSReader> msReader = MakeReader();
const std::vector<std::complex<float>> buffer(NChannels() * NPolarizations(),
{0.0f, 0.0f});
while (msReader->CurrentRowAvailable()) {
// Always overwrite
const bool addToMS = false;
WriteModel(buffer.data(), addToMS);
NextOutputRow();
msReader->NextInputRow();
}
}
bool MSProvider::OpenWeightSpectrumColumn(
const casacore::MeasurementSet& ms,
std::unique_ptr<casacore::ArrayColumn<float>>& weightColumn) {
bool isWeightDefined;
if (ms.isColumn(casacore::MSMainEnums::WEIGHT_SPECTRUM)) {
weightColumn.reset(new casacore::ArrayColumn<float>(
ms, casacore::MS::columnName(casacore::MSMainEnums::WEIGHT_SPECTRUM)));
isWeightDefined = weightColumn->isDefined(0);
} else {
isWeightDefined = false;
}
if (!isWeightDefined) {
Logger::Warn
<< "WARNING: This measurement set has no or an invalid WEIGHT_SPECTRUM "
"column; will use less informative WEIGHT column.\n";
weightColumn.reset();
}
return isWeightDefined;
}
} // namespace wsclean
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