TimeVarVisJones.h

Classes

TimeVarVisJones -- Model time-variable multiplicative errors for the VisEquation (full description)

PJones -- Model parallactic angle corrections for the VisEquation (full description)

CJones -- Model configuration matrix corrections for the VisEquation (full description)

class TimeVarVisJones : public VisJones

Interface

Public Members

TimeVarVisJones()

TimeVarVisJones(VisSet& vs)

TimeVarVisJones(const TimeVarVisJones& other)

virtual ~TimeVarVisJones()

virtual void makeLocalVisSet()

virtual void setInterpolation(const Record& interpolation)

virtual Type type()=0

virtual Bool freqDep()

virtual Bool isSolved()

virtual Bool isApplied()

virtual Double interval()

virtual Double preavg()

virtual VisBuffer& apply(VisBuffer& vb)

virtual VisBuffer& applyInv(VisBuffer& vb)

virtual VisBuffer & applyGradient(VisBuffer & vb, const Vector<int> & v, Int a1, Int a2, Int pos)

virtual void addGradients(const VisBuffer& vb, Int row, const Antenna& a, const Vector<Float>& sumwt, const Vector<Float>& chisq, const Vector<mjJones2>& c, const Vector<mjJones2F>& f)

virtual Bool solve(class VisEquation &)

virtual void store(const String& file, const Bool& append)

virtual void query()

Protected Members

virtual void load(const String& file, const String& select, const String& type)

void initialize(VisSet& vs)

void initializeCache()

void initGainCache()

void deleteCache()

void initMetaCache()

void fillMetaCache()

void deleteMetaCache()

void initSlotCache()

void deleteSlotCache()

void countSlots()

void setSolved(const Bool& flag)

void setApplied(const Bool& flag)

virtual void getAntGain(Matrix<mjJones2>& ag, Vector<Bool>& agOK, const Vector& vb, const Double& time) = 0

Bool inSlot(Int& slot, const Double& time)

Int findSlot(const Double& time)

virtual void checkCache(const VisBuffer& vb, const Int& spw, const Double& time)

virtual void updateCache(const VisBuffer& vb, const Int& spw, const Double& time)

void invalidateCache()

void invalidateCache(Int spectralWindow)

void validateCache(Int spectralWindow)

Bool cacheValid(Int spectralWindow)

virtual Bool polznSwitch(const VisBuffer& vb)

virtual void polznMap(CStokesVector& vis)

virtual void polznUnmap(CStokesVector& vis)

LogSink& logSink()

Description

Prerequisite

• MeasurementComponents module
• VisSet class
• VisEquation class
• VisJones class

Etymology

Synopsis

See VisEquation for definition of the Visibility Measurement Equation.

TimeVarVisJones performs caching of values to minimize computation.

Values may be saved to a table.

Example

      // Read the VisSet from disk
      VisSet vs("3c84.MS");

      VisEquation ve(vs);

      // Make an VisJones
      PJones pj(vs);

      ve.setVisJones(pj);

      // Correct the visset
      ve.correct();

Motivation

To Do

Member Description

TimeVarVisJones()

TimeVarVisJones(VisSet& vs)

From VisSet

TimeVarVisJones(const TimeVarVisJones& other)

Copy

virtual ~TimeVarVisJones()

Assignment virtual TimeVarVisJones& operator=(const TimeVarVisJones& other);

Destructor

virtual void makeLocalVisSet()

Make local VisSet

virtual void setInterpolation(const Record& interpolation)

Setup apply context

virtual Type type()=0

Return the type of this Jones matrix (actual type of derived class).

virtual Bool freqDep()

Frequency-dependent ?

virtual Bool isSolved()

Is this Jones matrix to be solved for, applied or both ?

virtual Bool isApplied()

virtual Double interval()

virtual Double preavg()

Return the pre-averaging interval (here equal to the interval).

virtual VisBuffer& apply(VisBuffer& vb)

virtual VisBuffer& applyInv(VisBuffer& vb)

Apply inverse of Jones matrix

virtual VisBuffer & applyGradient(VisBuffer & vb, const Vector<int> & v, Int a1, Int a2, Int pos)

virtual void addGradients(const VisBuffer& vb, Int row, const Antenna& a, const Vector<Float>& sumwt, const Vector<Float>& chisq, const Vector<mjJones2>& c, const Vector<mjJones2F>& f)

virtual Bool solve(class VisEquation &)

virtual void store(const String& file, const Bool& append)

Store the time-variable gains as a table. Derived classes may need to redefine this if they do not use antGain_.

virtual void query()

virtual void load(const String& file, const String& select, const String& type)

void initialize(VisSet& vs)

void initializeCache()

void initGainCache()

void deleteCache()

void initMetaCache()

void fillMetaCache()

void deleteMetaCache()

void initSlotCache()

void deleteSlotCache()

void countSlots()

count up slots

void setSolved(const Bool& flag)

Mark this Jones matrix as being solved for

void setApplied(const Bool& flag)

virtual void getAntGain(Matrix<mjJones2>& ag, Vector<Bool>& agOK, const Vector& vb, const Double& time) = 0

Bool inSlot(Int& slot, const Double& time)

Is the time in the specified slot. slot must be in range

Int findSlot(const Double& time)

Find the relevant slot. Throw an exception if not found.

virtual void checkCache(const VisBuffer& vb, const Int& spw, const Double& time)

check the cache : if necessary, assign new slot, update Gains and Cache

virtual void updateCache(const VisBuffer& vb, const Int& spw, const Double& time)

update the Cache

void invalidateCache()

(in)validate cache

void invalidateCache(Int spectralWindow)

void validateCache(Int spectralWindow)

Bool cacheValid(Int spectralWindow)

virtual Bool polznSwitch(const VisBuffer& vb)

Return true if polarization re-sequencing required

virtual void polznMap(CStokesVector& vis)

Re-sequence to (XX,XY,YX,YY) or (RR,RL,LR,LL)

virtual void polznUnmap(CStokesVector& vis)

Re-sequence to (XX,YY,XY,YX) or (RR,LL,RL,LR)

LogSink& logSink()

class PJones : public TimeVarVisJones

Interface