MSFitsInput.h

This is a helper class to avoid cumbersome switch statements on the template type of the primary group It forwards all the PrimaryGroup member functions we need in the filler.

Member Description

MSPrimaryGroupHolder()

Construct an empty holder, used to attach to later

MSPrimaryGroupHolder(FitsInput& infile)

Construct from an input file containing a FITS primary group hdu. Throws an exception if the datatype is not Short, FitsLong or Float

void attach(FitsInput& infile)

Attach to the input file, create the appropriate PrimaryGroup. Throws an exception if the datatype is not Short, FitsLong or Float

void detach()

Detach from the input file

Int dims()

Number of dimensions

Int dim(Int i)

Length of i'th axis

Char* ctype(Int i)

Coordinate type

Double crval(Int i)

Coordinate reference value

Double crpix(Int i)

Coordinate reference pixel

Double cdelt(Int i)

Coordinate delta

const FitsKeyword* kw(const FITS::ReservedName& n)

Keyword of given type

ConstFitsKeywordList& kwlist()

All keywords

Int gcount() const

Number of groups

Int pcount() const

Number of parameters

Char* ptype(Int i) const

Parameter type

Int read()

Read the next group

Double parm(Int i)

Get i'th parameter

Double operator () (Int i) const

Get group data with index i, scaled and converted to Double

class MSFitsInput

Interface

MSFitsInput(const String& msFile, const String& fitsFile)

~MSFitsInput()

void readFitsFile(Int obsType = MSTileLayout::Standard)

Protected Members

Bool checkInput(FitsInput& infile)

void getPrimaryGroupAxisInfo()

void setupMeasurementSet(const String& MSFileName, Bool useTSM=True, Int obsType = MSTileLayout::Standard)

void fillObsTables()

void fillMSMainTableColWise(Int& nField, Int& nSpW)

void fillMSMainTable(Int& nField, Int& nSpW)

void fillAntennaTable(BinaryTable& bt)

void fillSpectralWindowTable(BinaryTable& bt, Int nSpW)

void fillSpectralWindowTable()

void fillFieldTable(BinaryTable& bt, Int nField)

void fillFieldTable(Int nField)

void fillFeedTable()

void fillExtraTables()

void fixEpochReferences()

Private Members

MSFitsInput()

MSFitsInput(const MSFitsInput& other)

MSFitsInput& operator=(const MSFitsInput& other)

Description

Prerequisite

MeasurementSet
FITS classes

Etymology

MSFitsInput handles the conversion of FITS files to MeasurementSets

Synopsis

UV FITS to MeasurementSet filler. This can handle single source fits and multi source fits as written by classic AIPS. Also copes with multiple arrays (i.e. multiple AN tables) but doesn't correct for 5 day offsets introduced by DBCON.

To Do

So far we interpret AN, FQ and SU tables only

Member Description

MSFitsInput(const String& msFile, const String& fitsFile)

Create from output and input file names. This function opens the input file, and checks the output file is writable.

~MSFitsInput()

The destructor is fairly trivial.

void readFitsFile(Int obsType = MSTileLayout::Standard)

Read all the data from the FITS file and create the MeasurementSet. Throws an exception when it has severe trouble interpreting the FITS file.

Bool checkInput(FitsInput& infile)

Check that the input is a UV fits file with required contents. Returns False if not ok.

void getPrimaryGroupAxisInfo()

Read the axis info of the primary group, throws an exception if required axes are missing.

void setupMeasurementSet(const String& MSFileName, Bool useTSM=True, Int obsType = MSTileLayout::Standard)

Set up the MeasurementSet, including StorageManagers and fixed columns. If useTSM is True, the Tiled Storage Manager will be used to store DATA, FLAG and WEIGHT_SPECTRUM. Use obsType to choose the tiling scheme.