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include <imhdr.h>
include <mwset.h>
include <smw.h>
# SMW_SAXES -- Set axes parameters based on previously set dispersion axis.
# If the dispersion axis has been excluded for NDSPEC allow another axis to
# be chosen with a warning. For EQUISPEC and MULTISPEC require the dispersion
# to be 1 and also to be present.
procedure smw_saxes (smw, smw1, im)
pointer smw #I SMW pointer
pointer smw1 #I Template SMW pointer
pointer im #I Template IMIO pointer
int i, pdim, ldim, paxis, laxis, nw, dtype, nspec
real smw_c1tranr()
double w1, dw
pointer sp, str, axno, axval, r, w, cd, mw, ct, smw_sctran()
int mw_stati(), imgeti()
bool streq(), fp_equald()
errchk smw_sctran
begin
# If a template SMW pointer is specified just copy the axes parameters.
if (smw1 != NULL) {
call strcpy (Memc[SMW_APID(smw1)], Memc[SMW_APID(smw)], SZ_LINE)
SMW_NSPEC(smw) = SMW_NSPEC(smw1)
SMW_NBANDS(smw) = SMW_NBANDS(smw1)
SMW_TRANS(smw) = SMW_TRANS(smw1)
call amovi (SMW_PAXIS(smw1,1), SMW_PAXIS(smw,1), 3)
SMW_LDIM(smw) = SMW_LDIM(smw1)
call amovi (SMW_LAXIS(smw1,1), SMW_LAXIS(smw,1), 3)
call amovi (SMW_LLEN(smw1,1), SMW_LLEN(smw,1), 3)
call amovi (SMW_NSUM(smw1,1), SMW_NSUM(smw,1), 2)
mw = SMW_MW(smw,0)
SMW_PDIM(smw) = mw_stati (mw, MW_NDIM)
if (SMW_PDIM(smw) > SMW_PDIM(smw1))
do i = SMW_PDIM(smw1)+1, SMW_PDIM(smw)
SMW_PAXIS(smw,i) = i
return
}
call smark (sp)
call salloc (str, SZ_LINE, TY_CHAR)
call salloc (axno, 3, TY_INT)
call salloc (axval, 3, TY_INT)
call aclri (Memi[axno], 3)
# Determine the dimensions.
mw = SMW_MW(smw,0)
pdim = mw_stati (mw, MW_NDIM)
ldim = IM_NDIM(im)
call mw_gaxmap (mw, Memi[axno], Memi[axval], pdim)
# Set the physical dispersion axis.
switch (SMW_FORMAT(smw)) {
case SMW_ND:
call salloc (r, pdim, TY_DOUBLE)
call salloc (w, pdim, TY_DOUBLE)
call salloc (cd, pdim*pdim, TY_DOUBLE)
# Check for a transposed or rotated 2D image.
SMW_TRANS(smw) = NO
if (pdim == 2) {
call mw_gltermd (mw, Memd[cd], Memd[w], pdim)
if (Memd[cd] == 0D0 && Memd[cd+3] == 0D0) {
Memd[cd] = Memd[cd+1]
Memd[cd+1] = 0.
Memd[cd+3] = Memd[cd+2]
Memd[cd+2] = 0.
call mw_sltermd (mw, Memd[cd], Memd[w], pdim)
paxis = SMW_PAXIS(smw,1)
if (paxis == 1)
SMW_PAXIS(smw,1) = 2
else
SMW_PAXIS(smw,1) = 1
SMW_TRANS(smw) = YES
} else if (Memd[cd+1] != 0D0 || Memd[cd+2] != 0D0) {
Memd[w] = 0
Memd[w+1] = 0
Memd[cd] = 1
Memd[cd+1] = 0
Memd[cd+2] = 0
Memd[cd+3] = 1
call mw_sltermd (mw, Memd[cd], Memd[w], pdim)
}
}
# If the dispersion axis is of length 1 or has been excluded find
# the first longer axis and print a warning.
paxis = SMW_PAXIS(smw,1)
i = max (1, min (pdim, paxis))
laxis = max (1, Memi[axno+i-1])
if (IM_LEN(im,laxis) == 1)
do laxis = 1, ldim
if (IM_LEN(im,laxis) != 1)
break
# Determine the number of spectra.
nspec = 1
do i = 1, ldim
if (i != laxis)
nspec = nspec * IM_LEN(im,i)
SMW_NSPEC(smw) = nspec
SMW_NBANDS(smw) = 1
i = paxis
do paxis = 1, pdim
if (Memi[axno+paxis-1] == laxis)
break
if (i != paxis && nspec > 1) {
call eprintf (
"WARNING: Dispersion axis %d not found. Using axis %d.\n")
call pargi (i)
call pargi (paxis)
}
# Set the dispersion system.
call mw_gwtermd (mw, Memd[r], Memd[w], Memd[cd], pdim)
if (SMW_TRANS(smw) == YES) {
Memd[cd] = Memd[cd+1]
Memd[cd+1] = 0.
Memd[cd+3] = Memd[cd+2]
Memd[cd+2] = 0.
}
if (pdim == 2 && (Memd[cd+1] != 0D0 || Memd[cd+2] != 0D0)) {
iferr (dtype = imgeti (im, "DC-FLAG"))
dtype = DCNO
if (dtype != DCNO) {
call sfree (sp)
call error (1,
"Rotated, dispersion calibrated spectra are not allowed")
}
Memd[r] = 0
Memd[r+1] = 0
Memd[w] = 0
Memd[w+1] = 0
Memd[cd] = 1
Memd[cd+1] = 0
Memd[cd+2] = 0
Memd[cd+3] = 1
}
do i = 0, pdim-1 {
dw = Memd[cd+i*(pdim+1)]
if (dw == 0D0)
Memd[cd+i*(pdim+1)] = 1D0
}
call mw_swtermd (mw, Memd[r], Memd[w], Memd[cd], pdim)
dw = Memd[cd+(paxis-1)*(pdim+1)]
w1 = Memd[w+paxis-1] - (Memd[r+paxis-1] - 1) * dw
nw = IM_LEN(im,laxis)
i = 2 ** (paxis - 1)
ct = smw_sctran (smw, "logical", "physical", i)
nw = max (smw_c1tranr (ct, 0.5), smw_c1tranr (ct, nw+0.5))
call smw_ctfree (ct)
iferr (dtype = imgeti (im, "DC-FLAG")) {
iferr (call mw_gwattrs (mw,paxis,"axtype",Memc[str],SZ_LINE))
Memc[str] = EOS
if (streq (Memc[str], "ra") || streq (Memc[str], "dec"))
dtype = DCNO
else if (fp_equald (1D0, w1) || fp_equald (1D0, dw))
dtype = DCNO
else
dtype = DCLINEAR
}
if (dtype==DCLOG) {
if (abs(w1)>20. || abs(w1+(nw-1)*dw)>20.)
dtype = DCLINEAR
else {
w1 = 10D0 ** w1
dw = w1 * (10D0 ** ((nw-1)*dw) - 1) / (nw - 1)
}
}
if (dtype != DCNO) {
iferr (call mw_gwattrs (mw,paxis,"label",Memc[str],SZ_LINE)) {
iferr (call mw_gwattrs(mw,paxis,"units",Memc[str],SZ_LINE)) {
call mw_swattrs (mw, paxis, "units", "angstroms")
call mw_swattrs (mw, paxis, "label", "Wavelength")
}
}
}
SMW_DTYPE(smw) = INDEFI
call smw_swattrs (smw, 1, 1, INDEFI, INDEFI,
dtype, w1, dw, nw, 0D0, INDEFR, INDEFR, "")
case SMW_ES, SMW_MS:
paxis = 1
i = Memi[axno+1]
if (i == 0)
SMW_NSPEC(smw) = 1
else
SMW_NSPEC(smw) = IM_LEN(im,i)
i = Memi[axno+2]
if (i == 0)
SMW_NBANDS(smw) = 1
else
SMW_NBANDS(smw) = IM_LEN(im,i)
}
# Check and set the physical and logical dispersion axes.
laxis = Memi[axno+paxis-1]
if (laxis == 0) {
if (Memi[axval+paxis-1] == 0)
laxis = paxis
else
call error (1, "No dispersion axis")
}
SMW_PDIM(smw) = pdim
SMW_LDIM(smw) = ldim
SMW_PAXIS(smw,1) = paxis
SMW_LAXIS(smw,1) = laxis
SMW_LLEN(smw,1) = IM_LEN(im,laxis)
SMW_LLEN(smw,2) = 1
SMW_LLEN(smw,3) = 1
# Set the spatial axes.
i = 2
do laxis = 1, ldim {
if (laxis != SMW_LAXIS(smw,1)) {
do paxis = 1, pdim
if (Memi[axno+paxis-1] == laxis)
break
SMW_PAXIS(smw,i) = paxis
SMW_LAXIS(smw,i) = laxis
SMW_LLEN(smw,i) = IM_LEN(im,laxis)
i = i + 1
}
}
# Set the default title.
call smw_sapid (smw, 0, 1, IM_TITLE(im))
call sfree (sp)
end
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