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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imhdr.h>
include "imfort.h"
# IMOPNC -- Open a new copy of an existing image, with the same dimensions,
# size, pixel type, and non-pixel header fields as the original, but without
# copying any of the pixel data. The new image is left open for read-write
# access and a descriptor for the new image is returned as an argument.
procedure imopnc (nimage, o_im, n_im, ier)
% character*(*) nimage
pointer o_im, n_im # old, new image descriptors
int ier
int naxis, pixtype, junk, i
int axlen[IM_MAXDIM]
define quit_ 91
begin
n_im = NULL
# Get the physical parameters of the old image.
pixtype = IM_PIXTYPE(o_im)
naxis = IM_NDIM(o_im)
do i = 1, naxis
axlen[i] = IM_LEN(o_im,i)
# Create and open the new image.
call imcrea (nimage, axlen, naxis, pixtype, ier)
if (ier != OK)
goto quit_
call imopen (nimage, RW, n_im, ier)
if (ier != OK)
goto quit_
# Pass the header of the old image to the new.
call imhcpy (o_im, n_im, ier)
if (ier != OK)
goto quit_
return
quit_
# Error recovery.
if (n_im != NULL)
call imclos (n_im, junk)
end
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