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include <error.h>
include <smw.h>
# Function types.
define CHEBYSHEV 1 # CURFIT Chebyshev polynomial
define LEGENDRE 2 # CURFIT Legendre polynomial
define SPLINE3 3 # CURFIT cubic spline
define SPLINE1 4 # CURFIT linear spline
define PIXEL 5 # pixel coordinate array
define SAMPLE 6 # sampled coordinates
# T_SSHIFT -- Shift the spectral coordinates
procedure t_sshift ()
int list # Input list of spectra
double shift # Shift to apply
pointer aps # Aperture list
bool verbose # Verbose?
int ap, beam, dtype, nw
double w1, dw, z
real aplow[2], aphigh[2]
pointer sp, image, coeff, tmp, im, mw
bool clgetb()
double clgetd()
int imtopenp(), imtgetim()
pointer rng_open(), immap(), smw_openim()
errchk immap, smw_openim, smw_gwattrs, smw_swattrs, sshift
begin
call smark (sp)
call salloc (image, SZ_FNAME, TY_CHAR)
coeff = NULL
list = imtopenp ("spectra")
shift = clgetd ("shift")
call clgstr ("apertures", Memc[image], SZ_FNAME)
verbose = clgetb ("verbose")
iferr (aps = rng_open (Memc[image], INDEF, INDEF, INDEF))
call error (0, "Bad aperture list")
while (imtgetim (list, Memc[image], SZ_FNAME) != EOF) {
im = NULL
mw = NULL
iferr {
tmp = immap (Memc[image], READ_WRITE, 0); im = tmp
tmp = smw_openim (im); mw = tmp
switch (SMW_FORMAT(mw)) {
case SMW_ND:
call smw_gwattrs (mw, 1, 1, ap, beam, dtype,
w1, dw, nw, z, aplow, aphigh, coeff)
w1 = w1 + shift
call smw_swattrs (mw, 1, 1, ap, beam, dtype,
w1, dw, nw, z, aplow, aphigh, Memc[coeff])
if (verbose) {
call printf ("%s: shift = %g, %g --> %g\n")
call pargstr (Memc[image])
call pargd (shift)
call pargd (w1 - shift)
call pargd (w1)
}
case SMW_ES, SMW_MS:
call sshift (im, mw, Memc[image], aps, shift,
verbose)
}
} then
call erract (EA_WARN)
if (mw != NULL) {
call smw_saveim (mw, im)
call smw_close (mw)
}
if (im != NULL)
call imunmap (im)
}
call rng_close (aps)
call imtclose (list)
call mfree (coeff, TY_CHAR)
call sfree (sp)
end
# SSHIFT -- Shift coordinate zero point of selected aperture in
# MULTISPEC and EQUISPEC images.
procedure sshift (im, mw, image, aps, shift, verbose)
pointer im # IMIO pointer
pointer mw # MWCS pointer
char image[ARB] # Image name
pointer aps # Aperture range list
double shift # Shift to add
bool verbose # Verbose?
int i, ap, beam, dtype, nw, naps
double w1, dw, z
real aplow[2], aphigh[2]
pointer coeff, coeffs
bool rng_elementi()
errchk sshift1
begin
coeff = NULL
coeffs = NULL
# Go through each spectrum and change the selected apertures.
naps = 0
do i = 1, SMW_NSPEC(mw) {
# Get aperture info
iferr (call smw_gwattrs (mw, i, 1, ap, beam, dtype, w1, dw, nw, z,
aplow, aphigh, coeff))
break
# Check if aperture is to be changed
if (!rng_elementi (aps, ap))
next
# Apply shift
w1 = w1 + shift
if (dtype == 2)
call sshift1 (shift, coeff)
call smw_swattrs (mw, i, 1, ap, beam, dtype, w1, dw, nw, z,
aplow, aphigh, Memc[coeff])
# Make record
if (verbose) {
if (naps == 1) {
call printf ("%s: shift = %g\n")
call pargstr (image)
call pargd (shift)
}
call printf (" Aperture %d: %g --> %g\n")
call pargi (ap)
call pargd (w1 - shift)
call pargd (w1)
}
}
call mfree (coeff, TY_CHAR)
call mfree (coeffs, TY_DOUBLE)
end
# SSHIFT1 -- Shift coordinate zero point of nonlinear functions.
procedure sshift1 (shift, coeff)
double shift # Shift to add
pointer coeff # Attribute function coefficients
int i, j, ip, nalloc, ncoeff, type, order, fd
double dval
pointer coeffs
int ctod(), stropen()
errchk stropen
begin
if (coeff == NULL)
return
if (Memc[coeff] == EOS)
return
coeffs = NULL
ncoeff = 0
ip = 1
while (ctod (Memc[coeff], ip, dval) > 0) {
if (coeffs == NULL) {
nalloc = 10
call malloc (coeffs, nalloc, TY_DOUBLE)
} else if (ncoeff == nalloc) {
nalloc = nalloc + 10
call realloc (coeffs, nalloc, TY_DOUBLE)
}
Memd[coeffs+ncoeff] = dval
ncoeff = ncoeff + 1
}
ip = ip + SZ_LINE
call realloc (coeff, ip, TY_CHAR)
call aclrc (Memc[coeff], ip)
fd = stropen (Memc[coeff], ip, NEW_FILE)
ip = 0
while (ip < ncoeff) {
if (ip > 0)
call fprintf (fd, " ")
Memd[coeffs+ip+1] = Memd[coeffs+ip+1] + shift
type = nint (Memd[coeffs+ip+2])
order = nint (Memd[coeffs+ip+3])
call fprintf (fd, "%.3g %g %d %d")
call pargd (Memd[coeffs+ip])
call pargd (Memd[coeffs+ip+1])
call pargi (type)
call pargi (order)
switch (type) {
case CHEBYSHEV, LEGENDRE:
j = 6 + order
case SPLINE3:
j = 9 + order
case SPLINE1:
j = 7 + order
case PIXEL:
j = 4 + order
case SAMPLE:
j = 5 + order
}
do i = 4, j-1 {
call fprintf (fd, " %g")
call pargd (Memd[coeffs+ip+i])
}
ip = ip + j
}
call strclose (fd)
call mfree (coeffs, TY_DOUBLE)
end
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