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include <error.h>
include <syserr.h>
include <imhdr.h>
include <imio.h>
include <smw.h>
include <units.h>
# SP_WRSPECT -- Write spectrum to the same image or another image.
procedure sp_wrspect (sh1)
pointer sh1 # Spectrum pointer to be written
bool overwrite
pointer sp, str
int nowhite(), errcode()
bool clgetb(), xt_imnameeq()
begin
call smark (sp)
call salloc (str, SZ_LINE, TY_CHAR)
# Initially set overwrite to false in order to warn the user.
overwrite = false
# Get new image name.
call clgstr ("new_image", Memc[str], SZ_LINE)
if (nowhite (Memc[str], Memc[str], SZ_LINE) == 0) {
call sfree (sp)
return
}
# Check for overwriting the current file.
if (xt_imnameeq (IMNAME(sh1), Memc[str])) {
overwrite = clgetb ("overwrite")
if (!overwrite) {
call sfree (sp)
return
}
}
# Write spectrum.
iferr (call wrspect (sh1, Memc[str], overwrite)) {
switch (errcode()) {
case SYS_IKICLOB:
call erract (EA_WARN)
# Try again if overwrite is requested.
if (!overwrite)
overwrite = clgetb ("overwrite")
if (overwrite) {
iferr (call wrspect (sh1, Memc[str], overwrite))
call erract (EA_WARN)
}
default:
call erract (EA_WARN)
}
}
call sfree (sp)
end
# WRSPECT -- Write spectrum to the same image or another image.
#
# If overwriting reopen the image READ_WRITE. If this is not possible it is
# an error which may be trapped by the calling routine if desired.
#
# If writing to another image determine if the image exists. If not make a
# NEW_COPY of the image and copy all spectra and associated data. NDSPEC
# format spectra, i.e. 2D or 3D images, are copied to a 1D spectrum.
#
# If the image exists check the overwrite parameter. If overwriting, open the
# image READ_WRITE and return an error if this is not possible. If the
# output image has only one spectrum delete the image and create a NEW_COPY
# of the current spectrum image. Otherwise we will be replacing only the
# current spectrum so copy all spectra from the current image.
#
# When the input and output images are not the same open the output WCS and
# select the spectrum of the same aperture to replace. It is an error if the
# output spectrum does not contain a spectrum of the same aperture. It is
# also an error if the output spectrum is an NDSPEC image.
procedure wrspect (sh1, output, overwrite)
pointer sh1 # Spectrum pointer to be written
char output[ARB] # Output spectrum filename
bool overwrite # Overwrite existing spectrum?
bool delim
char errstr[SZ_LINE]
int i, j, np1, np2, dtype[2], nw[2], err
real r[2]
double w1[2], dw[2], z[2]
pointer coeff, im, in, out, mw1, mw2, sh2, outbuf, ptr
int imaccf(), errget()
bool xt_imnameeq(), fp_equald()
pointer immap(), smw_openim(), imgl3r(), impl3r(), imps3r()
errchk immap, imgl3r, impl3r, imps3r, imdelf, shdr_open, wrspect1
errchk smw_openim, smw_gwattrs, smw_swattrs, smw_saveim
begin
in = IM(sh1)
mw1 = MW(sh1)
out = NULL
mw2 = NULL
sh2 = NULL
ptr = NULL
delim = false
iferr {
# Open and initialize the output image.
if (xt_imnameeq (IMNAME(sh1), output)) {
if (!overwrite) {
call sprintf (errstr, SZ_LINE, "No overwrite set (%s)")
call pargstr (output)
call error (1, errstr)
}
call imunmap (in)
iferr (im = immap (IMNAME(sh1), READ_WRITE, 0)) {
in = immap (IMNAME(sh1), READ_ONLY, 0)
call erract (EA_ERROR)
}
in = im
IM(sh1) = in
out = in
mw2 = MW(sh1)
sh2 = sh1
} else {
iferr (im = immap (output, NEW_COPY, in)) {
if (!overwrite)
call erract (EA_ERROR)
im = immap (output, READ_WRITE, 0); out = im
if (IM_LEN(out,2) == 1) {
call imunmap (out)
call imdelete (output)
im = immap (output, NEW_COPY, in); out = im
if (IM_PIXTYPE(out) != TY_DOUBLE)
IM_PIXTYPE(out) = TY_REAL
do j = 1, IM_LEN(out,3)
do i = 1, IM_LEN(out,2)
call amovr (Memr[imgl3r(in,i,j)],
Memr[impl3r(out,i,j)], IM_LEN(out,1))
}
im = smw_openim (out); mw2 = im
switch (SMW_FORMAT(mw1)) {
case SMW_ND:
if (SMW_FORMAT(mw2) != SMW_ND)
call error (1, "Incompatible spectral formats")
if (IM_NDIM(in) != IM_NDIM(out))
call error (2, "Incompatible dimensions")
do i = 1, IM_NDIM(in)
if (IM_LEN(in,i) != IM_LEN(out,i))
call error (2, "Incompatible dimensions")
coeff = NULL
call smw_gwattrs (mw1, 1, 1, i, i,
dtype[1], w1[1], dw[1], nw[1], z, r, r, coeff)
call smw_gwattrs (mw2, 1, 1, i, i,
dtype[2], w1[2], dw[2], nw[2], z, r, r, coeff)
call mfree (coeff, TY_CHAR)
if (dtype[1]!=dtype[2] || !fp_equald (w1[1],w1[2]) ||
!fp_equald (dw[1],dw[2]))
call error (3,
"Incompatible dispersion coordinates")
call shdr_open (out, mw2, APINDEX(sh1), LINDEX(sh1,2),
AP(sh1), SHHDR, ptr)
sh2 = ptr
case SMW_ES, SMW_MS:
if (SMW_FORMAT(mw2) == SMW_ND)
call error (1, "Incompatible spectral formats")
call shdr_open (out, mw2, APINDEX(sh1), LINDEX(sh1,2),
AP(sh1), SHHDR, ptr)
sh2 = ptr
}
} else {
delim = true
out = im
IM_PIXTYPE(out) = TY_REAL
im = smw_openim (out); mw2 = im
call shdr_open (out, mw2, APINDEX(sh1), LINDEX(sh1,2),
AP(sh1), SHHDR, ptr)
sh2 = ptr
do j = 1, IM_LEN(out,3)
do i = 1, IM_LEN(out,2)
call amovr (Memr[imgl3r(in,i,j)],
Memr[impl3r(out,i,j)], IM_LEN(out,1))
}
}
# Check, set, and update the WCS information. Note that
# wrspect1 may change the smw pointers.
call wrspect1 (sh1, sh2)
mw1 = MW(sh1)
mw2 = MW(sh2)
call smw_saveim (mw2, out)
# Update spectrum calibration parameters.
if (EC(sh1) == ECYES)
call imaddi (out, "EX-FLAG", EC(sh1))
else if (imaccf (out, "EX-FLAG") == YES)
call imdelf (out, "EX-FLAG")
if (FC(sh1) == FCYES)
call imaddi (out, "CA-FLAG", FC(sh1))
else if (imaccf (out, "CA-FLAG") == YES)
call imdelf (out, "CA-FLAG")
if (RC(sh1) != EOS)
call imastr (out, "DEREDDEN", RC(sh1))
else if (imaccf (out, "DEREDDEN") == YES)
call imdelf (out, "DEREDDEN")
# Copy the spectrum.
i = max (1, LINDEX(sh2,1))
j = max (1, LINDEX(sh2,2))
np1 = NP1(sh1)
np2 = NP2(sh1)
switch (SMW_FORMAT(mw1)) {
case SMW_ND:
switch (SMW_LAXIS(mw1,1)) {
case 1:
outbuf = imps3r (out, np1, np2, i, i, j, j)
case 2:
outbuf = imps3r (out, i, i, np1, np2, j, j)
case 3:
outbuf = imps3r (out, i, i, j, j, np1, np2)
}
call amovr (Memr[SY(sh1)], Memr[outbuf], SN(sh1))
case SMW_ES, SMW_MS:
outbuf = impl3r (out, i, j)
call amovr (Memr[SY(sh1)], Memr[outbuf+np1-1], SN(sh1))
if (np1 > 1)
call amovkr (Memr[outbuf+np1-1], Memr[outbuf], np1-1)
if (np2 < IM_LEN(out,1))
call amovkr (Memr[outbuf+np2-1], Memr[outbuf+np2],
IM_LEN(out,1)-np2)
}
# Close output image if not the same as the input image.
if (out != in) {
call shdr_close (sh2)
call smw_close (mw2)
call imunmap (out)
}
} then {
err = errget (errstr, SZ_LINE)
if (out != in) {
if (sh2 != NULL)
call shdr_close (sh2)
if (mw2 != NULL)
call smw_close (mw2)
if (out != NULL) {
call imunmap (out)
if (delim)
iferr (call imdelete (output))
;
}
}
call error (err, errstr)
}
end
# WRSPECT1 -- Set output WCS attributes.
# This requires checking compatibility of the WCS with other spectra
# in the image.
procedure wrspect1 (sh1, sh2)
pointer sh1 # Input
pointer sh2 # Output
int i, j, beam, dtype, nw
double w1, wb, dw, z, a, b, p1, p2, p3, shdr_lw()
real aplow[2], aphigh[2]
pointer in, out, smw1, smw2, mw, smw_sctran()
pointer sp, key, str, ltm, ltv, coeff
bool fp_equald(), strne()
errchk mw_glterm, smw_gwattrs, smw_swattrs, smw_sctran
begin
in = IM(sh1)
out = IM(sh2)
smw1 = MW(sh1)
smw2 = MW(sh2)
mw = SMW_MW(smw2,0)
# The output format must not be NDSPEC and there must be a
# matching aperture in the output image.
if (AP(sh2) != AP(sh1) || LINDEX(sh2,1) != LINDEX(sh1,1))
call error (6, "Matching aperture not found in output image")
call smark (sp)
call salloc (key, SZ_LINE, TY_CHAR)
call salloc (str, SZ_LINE, TY_CHAR)
call salloc (ltm, 3*3, TY_DOUBLE)
call salloc (ltv, 3, TY_DOUBLE)
call malloc (coeff, SZ_LINE, TY_CHAR)
# Check dispersion function compatibility.
# Nonlinear functions can't be copied to a different physical
# coordinate system though the linear dispersion can be
# adjusted.
i = SMW_PDIM(smw2)
j = SMW_PAXIS(smw2,1)
call mw_gltermd (mw, Memd[ltm], Memd[ltv], SMW_PDIM(smw2))
a = Memd[ltv+(j-1)]
b = Memd[ltm+(i+1)*(j-1)]
if (DC(sh1) == DCFUNC) {
i = SMW_PDIM(smw1)
j = SMW_PAXIS(smw1,1)
call mw_gltermd (SMW_MW(smw1,0), Memd[ltm], Memd[ltv], i)
Memd[ltv] = Memd[ltv+(j-1)]
Memd[ltm] = Memd[ltm+(i+1)*(j-1)]
if (!fp_equald (a, Memd[ltv]) || !fp_equald (b ,Memd[ltm])) {
call error (7,
"Physical basis for nonlinear dispersion functions don't match")
}
}
call smw_gwattrs (smw1, LINDEX(sh1,1), LINDEX(sh1,2),
AP(sh1), beam, dtype, w1, dw, nw, z, aplow, aphigh, coeff)
w1 = shdr_lw (sh1, 1D0)
wb = shdr_lw (sh1, double(SN(sh1)))
iferr {
call un_ctrand (UN(sh1), MWUN(sh1), w1, w1, 1)
call un_ctrand (UN(sh1), MWUN(sh1), wb, wb, 1)
} then
;
p1 = (NP1(sh1) - a) / b
p2 = (NP2(sh1) - a) / b
p3 = (IM_LEN(out,1) - a) / b
nw = nint (min (max (p1 ,p3), max (p1, p2))) + NP1(sh1) - 1
if (dtype == DCLOG) {
if (p1 != p2)
dw = (log10(wb*(1+z)) - log10(w1*(1+z))) / (p2 - p1)
w1 = log10 (w1*(1+z)) - (p1 - 1) * dw
w1 = 10. ** w1
dw = (w1 * 10D0 ** ((nw-1)*dw) - w1) / (nw - 1)
} else {
if (p1 != p2)
dw = (wb - w1) / (p2 - p1) * (1 + z)
w1 = w1 * (1 + z) - (p1 - 1) * dw
}
# Note that this may change the smw pointer.
call smw_swattrs (smw2, LINDEX(sh2,1), 1, AP(sh2), beam, dtype,
w1, dw, nw, z, aplow, aphigh, Memc[coeff])
if (smw2 != MW(sh2)) {
switch (SMW_FORMAT(smw2)) {
case SMW_ND, SMW_ES:
i = 2 ** (SMW_PAXIS(smw2,1) - 1)
case SMW_MS:
i = 3B
}
CTLW1(sh2) = smw_sctran (smw2, "logical", "world", i)
CTWL1(sh2) = smw_sctran (smw2, "world", "logical", i)
CTLW(sh2) = CTLW1(sh2)
CTWL(sh2) = CTWL1(sh2)
MW(sh2) = smw2
mw = SMW_MW(smw2,0)
}
# Copy title
call smw_sapid (smw2, LINDEX(sh2,1), 1, TITLE(sh1))
if (Memc[SID(sh1,1)] != EOS) {
call sprintf (Memc[key], SZ_LINE, "BANDID%d")
call pargi (LINDEX(sh1,2))
iferr (call imgstr (out, Memc[key], Memc[str], SZ_LINE))
call imastr (out, Memc[key], Memc[SID(sh1,1)])
else {
if (strne (Memc[SID(sh1,1)], Memc[str]))
call eprintf (
"Warning: Input and output types (BANDID) differ\n")
}
}
# Copy label and units
if (UN_LABEL(MWUN(sh1)) != EOS)
call mw_swattrs (mw, 1, "label", UN_LABEL(MWUN(sh1)))
if (UN_UNITS(MWUN(sh1)) != EOS)
call mw_swattrs (mw, 1, "units", UN_UNITS(MWUN(sh1)))
if (UN_USER(UN(sh1)) != EOF)
call mw_swattrs (mw, 1, "units_display", UN_USER(UN(sh1)))
call mfree (coeff, TY_CHAR)
call sfree (sp)
end
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