//# VisibilityIterator.h: Step through the MeasurementEquation by visibility
//# Copyright (C) 1996,1997,1998,1999,2000,2001,2002,2003
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the Implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id: VisibilityIterator2.h,v 19.14 2006/02/28 04:48:58 mvoronko Exp $
#if ! defined (MSVIS_TransformingVi2_H_121115_0950)
#define MSVIS_TransformingVi2_H_121115_0950
#include <casacore/casa/aips.h>
#include <casacore/casa/Arrays/ArrayFwd.h>
#include <msvis/MSVis/ViImplementation2.h>
#include <map>
#include <vector>
#include <casacore/measures/Measures/Stokes.h>
namespace casa { //# NAMESPACE CASA - BEGIN
namespace vi {
//# forward decl
class VisBuffer2;
class ChannelSelector;
class ChannelSelectorCache;
typedef casacore::Vector<casacore::Vector <casacore::Slice> > ChannelSlicer;
class SpectralWindowChannelsCache;
class SpectralWindowChannels;
class SubtableColumns;
// <summary>
// VisibilityIterator2 iterates through one or more readonly MeasurementSets
// </summary>
// <use visibility=export>
// <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
// </reviewed>
// <prerequisite>
// <li> <linkto class="MSIter">MSIter</linkto>
// <li> <linkto class="casacore::MeasurementSet">casacore::MeasurementSet</linkto>
// <li> <linkto class="VisSet">VisSet</linkto>
// </prerequisite>
//
// <etymology>
// The VisibilityIterator2 is a readonly iterator returning visibilities
// </etymology>
//
// <synopsis>
// VisibilityIterator2 provides iteration with various sort orders
// for one or more MSs. It has member functions to retrieve the fields
// commonly needed in synthesis calibration and imaging.
//
// One should use <linkto class="VisBuffer">VisBuffer</linkto>
// to access chunks of data.
// </synopsis>
//
// <example>
// <code>
// //
// </code>
// </example>
//
// <motivation>
// For imaging and calibration you need to access an casacore::MS in some consistent
// order (by field, spectralwindow, time interval etc.). This class provides
// that access.
// </motivation>
//
// <thrown>
// <li>
// <li>
// </thrown>
//
// <todo asof="1997/05/30">
// <li> cleanup the currently dual interface for visibilities and flags
// <li> sort out what to do with weights when interpolating
// </todo>
class TransformingVi2 : public ViImplementation2 {
public:
// Destructor
virtual ~TransformingVi2 ();
// Report the the ViImplementation type
// (should be specialized in child classes)
virtual casacore::String ViiType() const override { return casacore::String("UnknownTrans( ")+getVii()->ViiType()+" )"; };
// +==================================+
// | |
// | Iteration Control and Monitoring |
// | |
// +==================================+
// Methods to control and monitor subchunk iteration
virtual void origin () override;
virtual casacore::Bool more () const override;
virtual void next () override;
virtual Subchunk getSubchunkId () const override;
// Methods to control chunk iterator
virtual void originChunks (casacore::Bool forceRewind = false) override;
virtual casacore::Bool moreChunks () const override;
virtual void nextChunk () override;
// Pass results accumulated throughout iteration
void result(casacore::Record& res) const;
// Report Name of slowest column that changes at end of current iteration
virtual casacore::String keyChange() const override { return getVii()->keyChange(); };
virtual casacore::Bool isWritable () const override;
// Return the time interval (in seconds) used for iteration.
// This is not the same as the INTERVAL column. Setting the
// the interval requires calling origin chunks before performing
// further iterator.
virtual double getInterval() const override;
virtual void setInterval (double timeInterval) override;
// Select the channels to be returned. Requires calling originChunks before
// performing additional iteration.
virtual void setFrequencySelections (const FrequencySelections & selection) override;
// Set the 'blocking' size for returning data.
// With the default (0) only a single integration is returned at a time, this
// is what is currently required for the calibration software. With blocking
// set, up to nRows can be returned in one go. The chunk
// size determines the actual maximum.
casacore::rownr_t getRowBlocking() const;
virtual void setRowBlocking (casacore::rownr_t nRows) override;
virtual casacore::Bool existsColumn (VisBufferComponent2 id) const override;
virtual const SortColumns & getSortColumns() const override;
virtual casacore::Bool isNewArrayId () const override;
virtual casacore::Bool isNewFieldId () const override;
virtual casacore::Bool isNewMs () const override;
virtual casacore::Bool isNewSpectralWindow () const override;
// Return the number of rows in the current iteration
virtual casacore::rownr_t nRows () const override;
// Return the number of distinct array/cube shapes in the current iteration
virtual casacore::rownr_t nShapes () const override;
// Return the number of rows for each distinct array/cube shapes in the current iteration
virtual const casacore::Vector<casacore::rownr_t>& nRowsPerShape () const override;
// Return the number of channels for each distinct array/cube shapes in the current iteration
virtual const casacore::Vector<casacore::Int>& nChannelsPerShape () const override;
// Return the number of correlations for each distinct array/cube shapes in the current iteration
virtual const casacore::Vector<casacore::Int>& nCorrelationsPerShape () const override;
// Return the row ids as from the original root table. This is useful
// to find correspondance between a given row in this iteration to the
// original ms row
virtual void getRowIds (casacore::Vector<casacore::rownr_t> & rowids) const override;
virtual VisBuffer2 * getVisBuffer () const override {return vb_p;}
// +=========================+
// | |
// | Subchunk casacore::Data Accessors |
// | |
// +=========================+
// Return antenna1
virtual void antenna1 (casacore::Vector<casacore::Int> & ant1) const override;
// Return antenna2
virtual void antenna2 (casacore::Vector<casacore::Int> & ant2) const override;
// Return the correlation type (returns casacore::Stokes enums)
virtual void corrType (casacore::Vector<casacore::Int> & corrTypes) const override;
// Return current DataDescription Id
virtual casacore::Int dataDescriptionId () const override;
// Return actual time interval
virtual void exposure (casacore::Vector<double> & expo) const override;
// Return feed1
virtual void feed1 (casacore::Vector<casacore::Int> & fd1) const override;
// Return feed2
virtual void feed2 (casacore::Vector<casacore::Int> & fd2) const override;
// Return the current FieldId
virtual void fieldIds (casacore::Vector<casacore::Int>&) const override;
// Return the current ArrayId
virtual void arrayIds (casacore::Vector<casacore::Int>&) const override;
// Return the current Field Name
virtual casacore::String fieldName () const override;
// Return flag for each polarization, channel and row
virtual void flag (casacore::Cube<casacore::Bool> & flags) const override;
// Return flag for each polarization, channel and row
virtual void flag (casacore::Vector<casacore::Cube<casacore::Bool>> & flags) const override;
// Return flag for each channel & row
virtual void flag (casacore::Matrix<casacore::Bool> & flags) const override;
// Determine whether FLAG_CATEGORY is valid.
virtual casacore::Bool flagCategoryExists () const override;
// Return flags for each polarization, channel, category, and row.
virtual void flagCategory (casacore::Array<casacore::Bool> & flagCategories) const override;
// Return row flag
virtual void flagRow (casacore::Vector<casacore::Bool> & rowflags) const override;
// Return the OBSERVATION_IDs
virtual void observationId (casacore::Vector<casacore::Int> & obsids) const override;
// Return current Polarization Id
virtual casacore::Int polarizationId () const override;
// Return the PROCESSOR_IDs
virtual void processorId (casacore::Vector<casacore::Int> & procids) const override;
// Return scan number
virtual void scan (casacore::Vector<casacore::Int> & scans) const override;
// Return the current Source Name
virtual casacore::String sourceName () const override;
// Return the STATE_IDs
virtual void stateId (casacore::Vector<casacore::Int> & stateids) const override;
// Return feed configuration matrix for specified antenna
virtual void jonesC (casacore::Vector<casacore::SquareMatrix<casacore::Complex, 2> > & cjones) const override;
// Return frame for polarization (returns PolFrame enum)
virtual casacore::Int polFrame () const override;
// Return sigma
virtual void sigma (casacore::Matrix<casacore::Float> & sigmat) const override;
virtual void sigma (casacore::Vector<casacore::Matrix<casacore::Float>> & sigmat) const override;
// Return all the spectral windows ids for each row of the current buffer
virtual void spectralWindows (casacore::Vector<casacore::Int> & spws) const override;
// Return all the polarizations Ids for each row of the current buffer
virtual void polarizationIds (casacore::Vector<casacore::Int> & polIds) const override;
// Return MJD midpoint of interval.
virtual void time (casacore::Vector<double> & t) const override;
// Return MJD centroid of interval.
virtual void timeCentroid (casacore::Vector<double> & t) const override;
// Return nominal time interval
virtual void timeInterval (casacore::Vector<double> & ti) const override;
// Return u,v and w (in meters)
virtual void uvw (casacore::Matrix<double> & uvwmat) const override;
// Return the visibilities as found in the casacore::MS, casacore::Cube (npol,nchan,nrow).
virtual void visibilityCorrected (casacore::Cube<casacore::Complex> & vis) const override;
virtual void visibilityCorrected (casacore::Vector<casacore::Cube<casacore::Complex>> & vis) const override;
virtual void visibilityModel (casacore::Cube<casacore::Complex> & vis) const override;
virtual void visibilityModel (casacore::Vector<casacore::Cube<casacore::Complex>> & vis) const override;
virtual void visibilityObserved (casacore::Cube<casacore::Complex> & vis) const override;
virtual void visibilityObserved (casacore::Vector<casacore::Cube<casacore::Complex>> & vis) const override;
// Return FLOAT_DATA as a casacore::Cube (npol, nchan, nrow) if found in the MS.
virtual void floatData (casacore::Cube<casacore::Float> & fcube) const override;
virtual void floatData (casacore::Vector<casacore::Cube<casacore::Float>> & fcube) const override;
// Return the visibility 4-vector of polarizations for each channel.
// If the casacore::MS doesn't contain all polarizations, it is assumed it
// contains one or two parallel hand polarizations.
// virtual void visibilityCorrected (casacore::Matrix<CStokesVector> & vis) const;
// virtual void visibilityModel (casacore::Matrix<CStokesVector> & vis) const;
// virtual void visibilityObserved (casacore::Matrix<CStokesVector> & vis) const;
// Return the shape of the visibility Cube
virtual casacore::IPosition visibilityShape () const override;
// Return weight
virtual void weight (casacore::Matrix<casacore::Float> & wtmat) const override;
virtual void weight (casacore::Vector<casacore::Matrix<casacore::Float>> & wtmat) const override;
// Determine whether WEIGHT_SPECTRUM exists.
virtual casacore::Bool weightSpectrumExists () const override;
virtual casacore::Bool sigmaSpectrumExists () const override;
// Return weightspectrum (a weight for each channel)
virtual void weightSpectrum (casacore::Cube<casacore::Float> & wtsp) const override;
virtual void weightSpectrum (casacore::Vector<casacore::Cube<casacore::Float>> & wtsp) const override;
virtual void sigmaSpectrum (casacore::Cube<casacore::Float> & sigsp) const override;
virtual void sigmaSpectrum (casacore::Vector<casacore::Cube<casacore::Float>> & sigsp) const override;
// Return the number of sub-intervals in the current chunk
// +------------------------+
// | |
// | Angular casacore::Data Providers |
// | |
// +------------------------+
// true if all elements of the cube returned by getBeamOffsets are zero
virtual casacore::Bool allBeamOffsetsZero () const override;
virtual std::pair<bool, casacore::MDirection> getPointingAngle (int antenna, double time) const override;
// Return the antenna AZ/EL casacore::Vector (nant)
virtual casacore::MDirection azel0 (double time) const override;
// static void azel0Calculate (double time, MSDerivedValues & msd,
// MDirection & azel0, const MEpoch & mEpoch0);
virtual const casacore::Vector<casacore::MDirection> & azel (double time) const override;
// static void azelCalculate (double time, MSDerivedValues & msd, Vector<MDirection> & azel,
// Int nAnt, const MEpoch & mEpoch0);
// Return feed parallactic angles casacore::Vector (nant) (1 feed/ant)
virtual const casacore::Vector<casacore::Float> & feed_pa (double time) const override;
// static Vector<Float> feed_paCalculate (double time, MSDerivedValues & msd,
// Int nAntennas, const MEpoch & mEpoch0,
// const Vector<Float> & receptor0Angle);
// Return a cube containing pairs of coordinate offsets for each
// receptor of each feed (values are in radians, coordinate system is fixed
// with antenna and is the same one as used to define the BEAM_OFFSET
// parameter in the feed table). The cube axes are receptor, antenna, feed.
virtual const casacore::Cube<casacore::RigidVector<double, 2> > & getBeamOffsets () const override;
// Return the hour angle for the specified time
virtual double hourang (double time) const override;
static double hourangCalculate (double time, casacore::MSDerivedValues & msd, const casacore::MEpoch & mEpoch0);
// Return nominal parallactic angle at specified time
// (does not include feed position angle offset--see feed_pa)
// A global value for all antennas (e.g., small array)
virtual const casacore::Float & parang0 (double time) const override;
static casacore::Float parang0Calculate (double time, casacore::MSDerivedValues & msd, const casacore::MEpoch & epoch0);
// Per antenna:
virtual const casacore::Vector<casacore::Float> & parang (double time) const override;
static casacore::Vector<casacore::Float> parangCalculate (double time, casacore::MSDerivedValues & msd,
int nAntennas, const casacore::MEpoch mEpoch0);
// Return the current phase center as an MDirection
virtual const casacore::MDirection & phaseCenter () const override;
// Return receptor angles for all antennae and feeds
// First axis of the cube is a receptor number,
// 2nd is antennaId, 3rd is feedId
// Note: the method is intended to provide an access to MSIter::receptorAngles
// for VisBuffer in the multi-feed case. It may be worth to change the
// interface of feed_pa to return the information for all feeds.
virtual const casacore::Cube<double> & receptorAngles () const override;
// +=========================+
// | |
// | Chunk and casacore::MS Level casacore::Data |
// | |
// +=========================+
// return a string mount identifier for each antenna
virtual const casacore::Vector<casacore::String> & antennaMounts () const override;
virtual casacore::MEpoch getEpoch () const override;
// Return imaging weight (a weight for each channel)
// virtual casacore::Matrix<casacore::Float> & imagingWeight (casacore::Matrix<casacore::Float> & wt) const;
virtual const VisImagingWeight & getImagingWeightGenerator () const override;
virtual casacore::MFrequency::Types getObservatoryFrequencyType () const override; //???
virtual casacore::MPosition getObservatoryPosition () const override;
virtual casacore::Vector<casacore::Float> getReceptor0Angle () override;
virtual casacore::Int getReportingFrameOfReference () const override;
virtual void setReportingFrameOfReference (casacore::Int frame) override;
virtual casacore::Vector<casacore::Int> getChannels (double time, casacore::Int frameOfReference,
casacore::Int spectralWindowId, casacore::Int msId) const override;
virtual casacore::Vector<casacore::Int> getCorrelations () const override;
virtual casacore::Vector<casacore::Stokes::StokesTypes> getCorrelationTypesDefined () const override;
virtual casacore::Vector<casacore::Stokes::StokesTypes> getCorrelationTypesSelected () const override;
virtual casacore::Vector<double> getFrequencies (double time, casacore::Int frameOfReference,
casacore::Int spectralWindowId, casacore::Int msId) const override;
virtual casacore::Vector<double> getChanWidths (double time, casacore::Int frameOfReference,
casacore::Int spectralWindowId, casacore::Int msId) const override;
virtual void dataDescriptionIds(casacore::Vector<casacore::Int> &) const override;
//reference to actual ms in interator
virtual casacore::Int msId () const override; // zero-based index of current casacore::MS in set of MSs
virtual const casacore::MeasurementSet & ms () const override;
virtual casacore::Int getNMs () const override;
// Name of nominal MS (will typically be beneath several layers)
virtual casacore::String msName () const override;
// Call to use the slurp i/o method for all scalar columns. This
// will set the casacore::BucketCache cache size to the full column length
// and cause the full column to be cached in memory, if
// any value of the column is used. In case of out-of-memory,
// it will automatically fall-back on the smaller cache size.
// Slurping the column is to be considered as a work-around for the
// casacore::Table i/o code, which uses casacore::BucketCache and performs extremely bad
// for random access. Slurping is useful when iterating non-sequentially
// an casacore::MS or parts of an casacore::MS, it is not tested with multiple MSs.
virtual void slurp () const override;
// Access the current casacore::MSColumns object in MSIter
virtual const vi::SubtableColumns & subtableColumns () const override;
// get back the selected spectral windows and spectral channels for
// current ms
virtual const SpectralWindowChannels & getSpectralWindowChannels (casacore::Int msId, casacore::Int spectralWindowId) const override;
//assign a VisImagingWeight object to this iterator
virtual void useImagingWeight (const VisImagingWeight & imWgt) override;
// Return number of antennasm spws, polids, ddids
virtual casacore::Int nAntennas () const override;
virtual casacore::Int nDataDescriptionIds () const override;
virtual casacore::Int nPolarizationIds () const override;
virtual casacore::rownr_t nRowsInChunk () const override; // number rows in current chunk
virtual casacore::rownr_t nRowsViWillSweep () const override; // number of rows in all selected ms's
virtual casacore::Int nSpectralWindows () const override;
virtual casacore::Int nTimes() const override;
// +-------------------+
// | |
// | Writeback Methods |
// | |
// +-------------------+
// This method writes back any changed (dirty) components of the provided
// VisBuffer and is the preferred method for writing data out.
virtual void writeBackChanges (VisBuffer2 * vb) override;
// Write/modify the flags in the data.
// This will flag all channels in the original data that contributed to
// the output channel in the case of channel averaging.
// All polarizations have the same flag value.
virtual void writeFlag (const casacore::Matrix<casacore::Bool> & flag);
// Write/modify the flags in the data.
// This writes the flags as found in the casacore::MS, casacore::Cube (npol,nchan,nrow),
// where nrow is the number of rows in the current iteration (given by
// nRow ()).
virtual void writeFlag (const casacore::Cube<casacore::Bool> & flag) override;
// Write/modify the flag row column; dimension casacore::Vector (nrow)
virtual void writeFlagRow (const casacore::Vector<casacore::Bool> & rowflags) override;
virtual void writeFlagCategory(const casacore::Array<casacore::Bool>& fc) override;
// Write/modify the visibilities.
// This is possibly only for a 'reference' casacore::MS which has a new DATA column.
// The first axis of the matrix should equal the selected number of channels
// in the original MS.
// If the casacore::MS does not contain all polarizations, only the parallel
// hand polarizations are used.
// virtual void writeVisCorrected (const casacore::Matrix<CStokesVector> & visibilityStokes);
// virtual void writeVisModel (const casacore::Matrix<CStokesVector> & visibilityStokes);
// virtual void writeVisObserved (const casacore::Matrix<CStokesVector> & visibilityStokes);
// Write/modify the visibilities
// This writes the data as found in the casacore::MS, casacore::Cube (npol,nchan,nrow).
virtual void writeVisCorrected (const casacore::Cube<casacore::Complex> & vis) override;
virtual void writeVisModel (const casacore::Cube<casacore::Complex> & vis) override;
virtual void writeVisObserved (const casacore::Cube<casacore::Complex> & vis) override;
// Write/modify the weights
virtual void writeWeight (const casacore::Matrix<casacore::Float> & wt) override;
// Write/modify the weightMat
//virtual void writeWeightMat (const casacore::Matrix<casacore::Float> & wtmat);
// Write/modify the weightSpectrum
virtual void writeWeightSpectrum (const casacore::Cube<casacore::Float> & wtsp) override;
virtual void writeSigmaSpectrum (const casacore::Cube<casacore::Float> & sigsp) override;
// Write/modify the Sigma
virtual void writeSigma (const casacore::Matrix<casacore::Float> & sig) override;
// Write/modify the ncorr x nrow SigmaMat.
//virtual void writeSigmaMat (const casacore::Matrix<casacore::Float> & sigmat);
// Write the information needed to generate on-the-fly model visibilities.
virtual void writeModel(const casacore::RecordInterface& rec, casacore::Bool iscomponentlist=true,
casacore::Bool incremental=false) override;
virtual void setWeightScaling (casacore::CountedPtr <WeightScaling> weightscaling) override;
virtual casacore::Bool hasWeightScaling () const override;
virtual casacore::CountedPtr<WeightScaling> getWeightScaling () const override;
// Library of static transformations available for all TVIs
static void calculateFlagRowFromFlagCube (const casacore::Cube<casacore::Bool> &flagCube, casacore::Vector<casacore::Bool> &flagRow);
//**********************************************************************
// Methods to access the subtables.
//**********************************************************************
// Access to antenna subtable
const casacore::MSAntennaColumns& antennaSubtablecols() const override;
// Access to dataDescription subtable
const casacore::MSDataDescColumns& dataDescriptionSubtablecols() const override;
// Access to feed subtable
const casacore::MSFeedColumns& feedSubtablecols() const override;
// Access to field subtable
const casacore::MSFieldColumns& fieldSubtablecols() const override;
// Access to flagCmd subtable
const casacore::MSFlagCmdColumns& flagCmdSubtablecols() const override;
// Access to history subtable
const casacore::MSHistoryColumns& historySubtablecols() const override;
// Access to observation subtable
const casacore::MSObservationColumns& observationSubtablecols() const override;
// Access to pointing subtable
const casacore::MSPointingColumns& pointingSubtablecols() const override;
// Access to polarization subtable
const casacore::MSPolarizationColumns& polarizationSubtablecols() const override;
// Access to processor subtable
const casacore::MSProcessorColumns& processorSubtablecols() const override;
// Access to spectralWindow subtable
const casacore::MSSpWindowColumns& spectralWindowSubtablecols() const override;
// Access to state subtable
const casacore::MSStateColumns& stateSubtablecols() const override;
// Access to doppler subtable
const casacore::MSDopplerColumns& dopplerSubtablecols() const override;
// Access to freqOffset subtable
const casacore::MSFreqOffsetColumns& freqOffsetSubtablecols() const override;
// Access to source subtable
const casacore::MSSourceColumns& sourceSubtablecols() const override;
// Access to sysCal subtable
const casacore::MSSysCalColumns& sysCalSubtablecols() const override;
// Access to weather subtable
const casacore::MSWeatherColumns& weatherSubtablecols() const override;
protected:
TransformingVi2 (ViImplementation2 * inputVi);
void configureNewSubchunk ();
void configureNewSubchunk (casacore::Int msId, const casacore::String & msName, casacore::Bool isNewMs,
casacore::Bool isNewArrayId, casacore::Bool isNewFieldId,
casacore::Bool isNewSpectralWindow, const Subchunk & subchunk,
const casacore::Vector<casacore::rownr_t>& nRowsPerShape,
const casacore::Vector<casacore::Int>& nChannelsPerShape,
const casacore::Vector<casacore::Int>& nCorrelationsPerShape,
const casacore::Vector<casacore::Int> & correlations,
const casacore::Vector<casacore::Stokes::StokesTypes> & correlationsDefined,
const casacore::Vector<casacore::Stokes::StokesTypes> & correlationsSelected,
casacore::CountedPtr<WeightScaling> weightScaling);
VisibilityIterator2 * getVi () const;
ViImplementation2 * getVii () const;
void setVisBuffer (VisBuffer2 * vb);
// jagonzal (to be reviewed by jjacobs): I need to set inputVii_p to NULL from
// MSTransformIterator destructor because MSTransformIteratorFactory is borrowing
// the ViImplementation2 from the input iterator, which is deleted in the first
// steps of the MSTransformIterator destructor.
ViImplementation2 * inputVii_p;
private:
VisBuffer2 * vb_p; // [own]
casacore::CountedPtr<WeightScaling> weightScaling_p;
};
} // end namespace vi
} //# NAMESPACE CASA - END
#endif // ! defined (MSVIS_TransformingVi2_H_121115_0950)