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include <imhdr.h>
include <imio.h>
include <smw.h>
# SMW_SAVEIM -- Save spectral WCS in image header.
# The input and output formats are EQUISPEC and MULTISPEC. A split input
# MULTISPEC WCS is first merged to a single EQUISPEC or MULTISPEC WCS.
# An input MULTISPEC WCS is converted to EQUISPEC output if possible.
procedure smw_saveim (smw, im)
pointer smw # SMW pointer
pointer im # Image pointer
int i, j, format, nl, pdim, pdim1, beam, dtype, dtype1, nw, nw1
int ap, axes[3]
real aplow[2], aphigh[2]
double v, m, w1, dw, z, w11, dw1, z1
pointer sp, key, str1, str2, axmap, lterm, coeff, mw, mw1
bool strne(), fp_equald()
int imaccf(), imgeti()
pointer mw_open()
errchk smw_merge, imdelf
data axes/1,2,3/
begin
call smark (sp)
call salloc (key, SZ_FNAME, TY_CHAR)
call salloc (str1, SZ_LINE, TY_CHAR)
call salloc (str2, SZ_LINE, TY_CHAR)
call salloc (axmap, 6, TY_INT)
call salloc (lterm, 15, TY_DOUBLE)
coeff = NULL
# Merge split WCS into a single WCS.
call smw_merge (smw)
mw = SMW_MW(smw,0)
pdim = SMW_PDIM(smw)
format = SMW_FORMAT(smw)
if (IM_NDIM(im) == 1)
nl = 1
else
nl = IM_LEN(im,2)
# If writing to an existing image we must follow IM_NPHYSDIM
# but in a NEW_COPY header we may really want a lower dimension.
# Since IM_NPHYSDIM is outside the interface we only violate
# it here and use a temporary keyword to communicate from the
# routine setting up the WCS.
pdim1 = max (IM_NDIM(im), IM_NPHYSDIM(im))
ifnoerr (i = imgeti (im, "SMW_NDIM")) {
pdim1 = i
call imdelf (im, "SMW_NDIM")
}
# Check if MULTISPEC WCS can be converted to EQUISPEC.
if (format == SMW_MS) {
format = SMW_ES
do i = 1, nl {
call smw_gwattrs (smw, i, 1, ap, beam, dtype, w1, dw, nw, z,
aplow, aphigh, coeff)
if (i == 1) {
dtype1 = dtype
w11 = w1
dw1 = dw
z1 = z
nw1 = nw
}
if (dtype>1||dtype!=dtype1||!fp_equald(w1,w11)||
!fp_equald(dw,dw1)||nw!=nw1||!fp_equald(z,z1)) {
format = SMW_MS
break
}
}
}
# Save WCS in desired format.
switch (format) {
case SMW_ND:
if (SMW_DTYPE(smw) != -1)
call imaddi (im, "DC-FLAG", SMW_DTYPE(smw))
else if (imaccf (im, "DC-FLAG") == YES)
call imdelf (im, "DC-FLAG")
if (imaccf (im, "DISPAXIS") == YES)
call imaddi (im, "DISPAXIS", SMW_PAXIS(smw,1))
call smw_gapid (smw, 1, 1, IM_TITLE(im), SZ_IMTITLE)
call mw_saveim (mw, im)
case SMW_ES:
# Save aperture information.
do i = 1, nl {
call smw_gwattrs (smw, i, 1, ap, beam, dtype, w1, dw, nw, z,
aplow, aphigh, coeff)
if (i < 1000)
call sprintf (Memc[key], SZ_FNAME, "APNUM%d")
else
call sprintf (Memc[key], SZ_FNAME, "AP%d")
call pargi (i)
call sprintf (Memc[str1], SZ_LINE, "%d %d")
call pargi (ap)
call pargi (beam)
if (!IS_INDEF(aplow[1]) || !IS_INDEF(aphigh[1])) {
call sprintf (Memc[str2], SZ_LINE, " %.2f %.2f")
call pargr (aplow[1])
call pargr (aphigh[1])
call strcat (Memc[str2], Memc[str1], SZ_LINE)
if (!IS_INDEF(aplow[2]) || !IS_INDEF(aphigh[2])) {
call sprintf (Memc[str2], SZ_LINE, " %.2f %.2f")
call pargr (aplow[2])
call pargr (aphigh[2])
call strcat (Memc[str2], Memc[str1], SZ_LINE)
}
}
call imastr (im, Memc[key], Memc[str1])
if (i == 1) {
iferr (call imdelf (im, "APID1"))
;
}
call smw_gapid (smw, i, 1, Memc[str1], SZ_LINE)
if (Memc[str1] != EOS) {
if (strne (Memc[str1], IM_TITLE(im))) {
if (nl == 1) {
call imastr (im, "MSTITLE", IM_TITLE(im))
call strcpy (Memc[str1], IM_TITLE(im), SZ_IMTITLE)
} else {
call sprintf (Memc[key], SZ_FNAME, "APID%d")
call pargi (i)
call imastr (im, Memc[key], Memc[str1])
}
}
}
}
# Delete unnecessary aperture information.
do i = nl+1, ARB {
if (i < 1000)
call sprintf (Memc[key], SZ_FNAME, "APNUM%d")
else
call sprintf (Memc[key], SZ_FNAME, "AP%d")
call pargi (i)
iferr (call imdelf (im, Memc[key]))
break
call sprintf (Memc[key], SZ_FNAME, "APID%d")
call pargi (i)
iferr (call imdelf (im, Memc[key]))
;
}
# Add dispersion parameters to image.
if (dtype != -1)
call imaddi (im, "DC-FLAG", dtype)
else if (imaccf (im, "DC-FLAG") == YES)
call imdelf (im, "DC-FLAG")
if (nw < IM_LEN(im,1))
call imaddi (im, "NP2", nw)
else if (imaccf (im, "NP2") == YES)
call imdelf (im, "NP2")
# Setup EQUISPEC WCS.
mw1 = mw_open (NULL, pdim1)
call mw_newsystem (mw1, "equispec", pdim1)
call mw_swtype (mw1, axes, pdim1, "linear", "")
ifnoerr (call mw_gwattrs (mw, 1, "label", Memc[str1], SZ_LINE))
call mw_swattrs (mw1, 1, "label", Memc[str1])
ifnoerr (call mw_gwattrs (mw, 1, "units", Memc[str1], SZ_LINE))
call mw_swattrs (mw1, 1, "units", Memc[str1])
ifnoerr (call mw_gwattrs (mw, 1, "units_display", Memc[str1],
SZ_LINE))
call mw_swattrs (mw1, 1, "units_display", Memc[str1])
call mw_gltermd (mw, Memd[lterm+pdim], Memd[lterm], pdim)
v = Memd[lterm]
m = Memd[lterm+pdim]
call mw_gltermd (mw1, Memd[lterm+pdim1], Memd[lterm], pdim1)
Memd[lterm] = v
Memd[lterm+pdim1] = m
call mw_sltermd (mw1, Memd[lterm+pdim1], Memd[lterm], pdim1)
call mw_gwtermd (mw1, Memd[lterm], Memd[lterm+pdim1],
Memd[lterm+2*pdim1], pdim1)
Memd[lterm] = 1.
w1 = w1 / (1 + z)
dw = dw / (1 + z)
if (dtype == DCLOG) {
dw = log10 ((w1 + (nw - 1) * dw) / w1) / (nw - 1)
w1 = log10 (w1)
}
Memd[lterm+pdim1] = w1
Memd[lterm+2*pdim1] = dw
call mw_swtermd (mw1, Memd[lterm], Memd[lterm+pdim1],
Memd[lterm+2*pdim1], pdim1)
call mw_saveim (mw1, im)
call mw_close (mw1)
case SMW_MS:
# Delete any APNUM keywords. If there is only one spectrum
# define the axis mapping.
do j = 1, ARB {
if (j < 1000)
call sprintf (Memc[key], SZ_FNAME, "APNUM%d")
else
call sprintf (Memc[key], SZ_FNAME, "AP%d")
call pargi (j)
iferr (call imdelf (im, Memc[key]))
break
}
if (IM_NDIM(im) == 1) {
call aclri (Memi[axmap], 2*pdim)
Memi[axmap] = 1
call mw_saxmap (mw, Memi[axmap], Memi[axmap+pdim], pdim)
}
# Set aperture ids.
do i = 1, nl {
if (i == 1) {
iferr (call imdelf (im, "APID1"))
;
}
call smw_gapid (smw, i, 1, Memc[str1], SZ_LINE)
if (Memc[str1] != EOS) {
if (strne (Memc[str1], IM_TITLE(im))) {
if (nl == 1) {
call imastr (im, "MSTITLE", IM_TITLE(im))
call strcpy (Memc[str1], IM_TITLE(im), SZ_IMTITLE)
} else {
call sprintf (Memc[key], SZ_FNAME, "APID%d")
call pargi (i)
call imastr (im, Memc[key], Memc[str1])
}
}
}
}
do i = nl+1, ARB {
call sprintf (Memc[key], SZ_FNAME, "APID%d")
call pargi (i)
iferr (call imdelf (im, Memc[key]))
break
}
call mw_saveim (mw, im)
}
call mfree (coeff, TY_CHAR)
call sfree (sp)
end
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