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Title: headinit
NAME
====
ft_headinit,ft_headcopy,ft_headfree,ft_setcards,ft_primary,ft_headmerge -Fitsy
FITS header creation routines.
SYNOPSIS
========
-
FITSHead ft_headinit(void *data, int bytes);
FITSHead ft_headcopy(FITSHead fits);
void ft_headfree(FITSHead fits, int freecards);
void ft_setcards(FITSHead fits, void *cards);
FITSHead ft_primary(FITSHead fits);
FITSHead ft_headmerge(FITSHead fits1, FITSHead fits2);
-
PARAMETERS
==========
* #"void *data" - Pointer to FITS cards.
* #"int bytes" - Number of bytes in buffer.
* #"FITSHead fits" - Not Documented.
* #"int freecards" - Free the FITS cards?
* #"void *cards" - Not Documented.
* #"FITSHead fits1" - Not Documented.
* #"FITSHead fits2" - Not Documented.
DESCRIPTION
===========
ft_headinit
-----------
Create or import a FITS header to Fitsy.
This is the primary way in which FITSHead structures are created.
If #cards is not NULL then then #acard cards are scanned from the memory
in search of the END card. When a memory block is passed in to #ft_headinit
then it is considered ~unmanaged~ and will not be freed by #ft_headfree.
If #cards is NULL, then #acards cards will be allocated for use as a FITSHead.
If #acards is 0 the #FT_CARDS will be allocated (36).
ft_headcopy
-----------
Make a copy of a #FITSHead data structure.
ft_headfree
-----------
Free a Fitsy FITS header data structure.
ft_setcards
-----------
Set the card buffer
ft_primary
----------
Make a copy of the header and force it to be a simple primary header.
ft_headmerge
------------
Merge cards from fits1 to fits2
EXAMPLES
========
+
FITSHead fits;
fits = #ft_headinit(NULL, 0); /* Create an empty header *-/
/* Build a FITS file header by hand.
*-/
#ft_headappl(fits, "SIMPLE", 0, 1, "Primary FITS image array");
#ft_headappi(fits, "BITPIX", 0, -32, "Single floats");
#ft_headappi(fits, "NAXIS" , 0, 2, "2d image");
#ft_headappi(fits, "NAXIS" , 1, 256, "X axis is 256");
#ft_headappi(fits, "NAXIS" , 2, 256, "Y axis is 256");
+
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