functions in fits.i - f
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fitsAddComment
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fitsAddComment, header, string
Add STRING as a comment in HEADER (a FitsHeader structure). If
STRING is too long, it is broken in pieces.
interpreted function, defined at i/fits.i line 90
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| SEE ALSO: | fitsRead, fitsWrite | |
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fitsAddHistory
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fitsAddHistory, header, string
Add STRING as an history card in HEADER (a FitsHeader structure).
If STRING is too long, it is broken in pieces.
Keyword STAMP may be used with a zero value to avoid the
additional time stamp (default is to add a time stamp).
interpreted function, defined at i/fits.i line 106
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| SEE ALSO: | fitsRead, fitsWrite | |
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fitsFixHeader
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fitsFixHeader, header
check consistency of FITS header.
interpreted function, defined at i/fits.i line 74
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| SEE ALSO: | fitsRead, fitsWrite | |
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fitsHeader
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header= fitsHeader();
fitsHeader, header;
creates a structure FitsHeader with defaults. Equivalent to:
header= FitsHeader(bscale= 1., bzero= 0.);
interpreted function, defined at i/fits.i line 62
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| SEE ALSO: | fitsRead, fitsWrite | |
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fitsRead
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a= fitsRead(filename, header)
returns the data of the FITS file FILENAME. If present, the
optional argument HEADER will be used to store the contents of
the FITS header file (a FitsHeader structure).
Keyword WHICH may be used to indicate which sub-array should be
returned. For instance, if the array DATA with dimensions
(235,453,7) is stored in the FITS file "data.fits", the sub-array
DATA(,,4) can be read by:
SUB_DATA= fitsRead("data.fits", which= 4);
Keyword PACK, if non-nil and non-zero, indicates that axis whith
unit dimension should be ignored. The default is to ignore only
zero length axis.
Keyword RESCALE, if non-nil and zero, indicates that read data
values should not be rescaled according to FITS keywords
BSCALE and BZERO. The default is to rescale data values if
BSCALE is not 1. or BZERO is not 0.
interpreted function, defined at i/fits.i line 411
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| SEE ALSO: | fitsWrite, fitsRescale | |
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fitsRescale
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rescaled_data= fitsRescale(data, bitpix, bscale, bzero)
Linearly rescale the values of input array DATA to fit into
integers with BITPIX bits per value (i.e., `char', `short' or
`long' for BITPIX being 8, 16 and 32 respectively).
Arguments BSCALE and BZERO are optional and purely outputs passed
by address. Their value will be set so that:
DATA(i) = BZERO + BSCALE * RESCALED_DATA(i)
where the equality may not be exact due to rounding errors. The
difference is however the smallest possible, i.e., less than
BSCALE / 2.
Keywords DATA_MIN and DATA_MAX may be used to supply the maximum
and minimum data values or to set brightness cutoffs.
interpreted function, defined at i/fits.i line 137
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| SEE ALSO: | fitsRead, fitsWrite | |
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fitsWrite
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fitsWrite, filename, data, header
Write DATA in file FILENAME using FITS format. If present, the
information of the optional argument HEADER (a FitsHeader structure)
will be used to write the FITS file header.
Keyword PACK, if non-nil and non-zero, indicates that axis whith
unit dimension should be ignored. The default is to ignore only
zero length axis.
Keyword RESCALE, if non-nil and zero, indicates that input data
values should not be rescaled into integers according to FITS
standard. The default, is to recode doubles as 32 bit integers,
floats as 16 bit integers and integers into smallest integers
possible without loss of dynamic range (e.g., an array of long
integers ranging from -31 to +130 will be recoded as chars).
interpreted function, defined at i/fits.i line 197
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| SEE ALSO: |
fitsRead,
fitsRescale,
fitsAddHistory,
fitsAddComment |
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fits_max_naxis
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fits_max_naxis -- maximum number of allowed axis in FITS
Its value should *NOT* be modified during a Yorick session.
keyword, defined at i/fits.i line 19
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