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include <imhdr.h>
include <error.h>
include <mwset.h>
# IP_LISTPIXELS -- Convert image pixels into a text stream, i.e., into a list.
# Each pixel is printed on a separate line, preceded by its coordinates.
procedure ip_listpix (im)
char wcs[SZ_FNAME]
double incoords[IM_MAXDIM], outcoords[IM_MAXDIM]
int i, j, npix, ndim, wcsndim, laxis1, fmtstat
int paxno[IM_MAXDIM], laxno[IM_MAXDIM]
long v[IM_MAXDIM], vcoords[IM_MAXDIM]
pointer im, line, mw, ct, fmtptrs[IM_MAXDIM]
int imgnlr(), mw_stati()
pointer mw_openim(), mw_sctran()
begin
# Get info from the input image.
ndim = IM_NDIM(im)
npix = IM_LEN(im,1)
# Get the wcs.
call strcpy ("world", wcs, SZ_FNAME)
ifnoerr (mw = mw_openim (im)) {
# Set up the transformation.
call mw_seti (mw, MW_USEAXMAP, NO)
ct = mw_sctran (mw, "logical", wcs, 0)
wcsndim = mw_stati (mw, MW_NPHYSDIM)
# Get the physical to logical axis map.
call mw_gaxmap (mw, paxno, laxno, wcsndim)
# Set the default wcs.
call mw_ssytem (mw, wcs)
} else {
# Print the error message from the above loop.
call erract (EA_WARN)
# Set the transform to the identity transform.
mw = NULL
ct = NULL
wcsndim = ndim
# Set the default physical to logical axis map.
do i = 1, wcsndim
paxno[i] = i
}
# Initialize the v vectors.
call amovkl (long (1), v, IM_MAXDIM)
call amovkl (long (1), vcoords, IM_MAXDIM)
# Initialize the coordinates.
laxis1 = 0
do i = 1, wcsndim {
if (paxno[i] == 0) {
incoords[i] = 1
} else if (paxno[i] == 1) {
laxis1 = i
incoords[i] = v[1]
} else {
incoords[i] = v[paxno[i]]
}
}
# Check and correct for the no axis mapping case.
if (laxis1 == 0) {
laxis1 = 1
do i = 1, wcsndim
paxno[i] = i
}
# Get the logical to physical axis map for the format strings.
do i = 1, ndim {
laxno[i] = 0
do j = 1, wcsndim {
if (paxno[j] != i)
next
laxno[i] = j
break
}
}
# Set the format strings for the logical axes.
fmtstat = EOS
do i = 1, ndim {
call malloc (fmtptrs[i], SZ_FNAME, TY_CHAR)
if (fmtstat != EOF)
call gargwrd (Memc[fmtptrs[i]], SZ_FNAME)
else
Memc[fmtptrs[i]] = EOS
if (laxno[i] == 0)
call strcpy ("%0.15g ", Memc[fmtptrs[i]], SZ_FNAME)
else if (mw == NULL || ct == NULL)
call strcpy ("%0.15g ", Memc[fmtptrs[i]], SZ_FNAME)
else iferr (call mw_gwattrs (mw, laxno[i], "format",
Memc[fmtptrs[i]], SZ_FNAME))
call strcpy ("%0.15g ", Memc[fmtptrs[i]], SZ_FNAME)
else
call strcat (" ", Memc[fmtptrs[i]], SZ_FNAME)
}
# Print the pixels.
while (imgnlr (im, line, v) != EOF) {
do i = 1, npix {
incoords[laxis1] = i
if (ct == NULL)
call amovd (incoords, outcoords, wcsndim)
else
call mw_ctrand (ct, incoords, outcoords, wcsndim)
do j = 1, ndim { # X, Y, Z, etc.
call printf (Memc[fmtptrs[j]])
if (laxno[j] == 0)
call pargd (double(vcoords[j]))
else
call pargd (outcoords[laxno[j]])
}
call printf (" %g\n") # pixel value
call pargr (Memr[line+i-1])
}
call amovl (v, vcoords, IM_MAXDIM)
do i = 1, wcsndim {
if (paxno[i] == 0)
next
incoords[i] = v[paxno[i]]
}
}
do i = 1, ndim
call mfree (fmtptrs[i], TY_CHAR)
if (mw != NULL)
call mw_close (mw)
end
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