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funimagerowput(3) SAORD Documentation funimagerowput(3)
NAME
FunImageRowPut - put row(s) of an image
SYNOPSIS
#include <funtools.h>
void *FunImageRowPut(Fun fun, void *buf, int rstart, int rstop,
int dim1, int dim2, int bitpix, char *plist)
DESCRIPTION
The FunImageRowPut() routine writes one or more image rows to the specified FITS image file. The first argument is the Funtools handle
returned by FunOpen(). The second buf argument is a pointer to the row data buffer, while the third and fourth arguments specify the
starting and ending rows to write. Valid rows values range from 1 to dim2, i.e., row is one-valued.
The dim1and dim2 arguments that follow specify the dimensions, where dim1 corresponds to naxis1 and dim2 corresponds to naxis2. The bitpix
argument data type of the image and can have the following FITS-standard values:
o 8 unsigned char
o 16 short
o 32 int
o -32 float
o -64 double
For example:
double *drow;
Fun fun, fun2;
... open files ...
/* get section dimensions */
FunInfoGet(fun, FUN_SECT_DIM1, &dim1, FUN_SECT_DIM2, &dim2, 0);
/* allocate one line's worth */
drow = malloc(dim1*sizeof(double));
/* retrieve and process each input row (starting at 1) */
for(i=1; i <= dim2; i++){
if( !FunImageRowGet(fun, drow, i, i, "bitpix=-64") )
gerror(stderr, "can't FunImageRowGet: %d %s
", i, iname);
... process drow ...
if( !FunImageRowPut(fun2, drow, i, i, 64, NULL) )
gerror(stderr, "can't FunImageRowPut: %d %s
", i, oname);
}
...
The data are assumed to be in the native machine format and will automatically be swapped to big-endian FITS format if necessary. This
behavior can be over-ridden with the convert=[true|false] keyword in the plist param list string.
When you are finished writing the image, you should call FunFlush() to write out the FITS image padding. However, this is not necessary if
you subsequently call FunClose() without doing any other I/O to the FITS file.
SEE ALSO
See funtools(7) for a list of Funtools help pages
version 1.4.2 January 2, 2008 funimagerowput(3)
