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include <error.h>
include <imhdr.h>
define LEN_UA 20000 # Maximum user header
define LEN_COMMENT 70 # Maximum comment length
# Profile types.
define PTYPES "|gaussian|lorentzian|voigt|"
define GAUSS 1 # Gaussian profile
define LORENTZ 2 # Lorentzian profile
define VOIGT 3 # Voigt profile
# T_MK1DSPEC -- Make one dimensional spectra. New images may be created
# or existing images modified. The continuum may be a slope and/or
# a blackbody. A line list may be given or random lines generated.
# The lines may be emission or absorption and may have varying
# widths and strengths. Subsampling is used.
procedure t_mk1dspec()
int ilist # List of input spectra (input param)
int olist # List of output spectra (output param)
int line # Line number
int ap # Aperture
int beam # Beam
int nw # Number of pixels (ncols param or imlen)
double w0 # Starting wavelength (wstart param)
double wpc # Wavelength per pix (wstart/wend params)
double z # Redshift
double cont # Continuum at first pixel
double slope # Continuum slope per pixel
double temp # Blackbody temperture (Kelvin)
int fnu # F-nu flux?
int llist # List of files containing lines (lines param)
pointer profile # Profile type
double peak # Peak/continuum
double gfwhm # Sigma of Gaussian (Angstroms)
double lfwhm # FWHM of Lorentzian (Angstroms)
int nlines # Number of lines
double subsample # Subsampling (nxsub param)
double ngfwhm # Dynamic range of gaussian (dynrange param)
double nlfwhm # Dynamic range of lorentzian (dynrange param)
long seed # Random number seed
bool new, ranlist
int i, j, dtype, ptype
long seed1
double w, x, x1, x2, x3, z1
real v, u, aplow[2], aphigh[2]
pointer sp, input, output, lines, comment, coeff
pointer in, out, mw, ptypes, waves, peaks, gfwhms, lfwhms, spec, buf
long clgetl(), clktime()
int clgeti(), clgwrd(), imtopenp(), imtgetim()
int nowhite(), access(), open(), fscan(), nscan(), strdic()
real urand()
double clgetd()
pointer immap(), mw_open(), smw_openim(), imgl2d(), impl2d()
bool clgetb(), streq()
errchk open()
begin
call smark (sp)
call salloc (input, SZ_FNAME, TY_CHAR)
call salloc (output, SZ_FNAME, TY_CHAR)
call salloc (lines, SZ_FNAME, TY_CHAR)
call salloc (comment, LEN_COMMENT, TY_CHAR)
call salloc (profile, SZ_FNAME, TY_CHAR)
coeff = NULL
# Get file lists and fixed parameters.
ilist = imtopenp ("input")
olist = imtopenp ("output")
llist = imtopenp ("lines")
subsample = 1. / clgeti ("nxsub")
x1 = clgetd ("dynrange")
ngfwhm = 0.424661 * sqrt (2. * log (x1))
nlfwhm = sqrt (0.5 * (x1 - 1))
z = clgetd ("rv")
if (clgetb ("z"))
z = 1 + z
else {
z = z / 299792.5
z = sqrt ((1 + z) / (1 - z))
}
# Loop through input images. Missing output images take input
# image name. Line list files may be missing.
Memc[lines] = EOS
while (imtgetim (ilist, Memc[input], SZ_FNAME) != EOF) {
if (imtgetim (olist, Memc[output], SZ_FNAME) == EOF)
call strcpy (Memc[input], Memc[output], SZ_FNAME)
i = imtgetim (llist, Memc[lines], SZ_FNAME)
# Map images. Check for new, existing, and in-place images.
if (streq (Memc[input], Memc[output])) {
ifnoerr (in = immap (Memc[input], READ_WRITE, 0)) {
iferr (mw = smw_openim (in)) {
call imunmap (in)
call erract (EA_WARN)
next
}
out = in
new = false
} else {
iferr (out = immap (Memc[output], NEW_IMAGE, LEN_UA)) {
call erract (EA_WARN)
next
}
in = out
new = true
call clgstr ("header", Memc[comment], LEN_COMMENT)
iferr (call mkh_header (out, Memc[comment], true, false))
call erract (EA_WARN)
IM_LEN(out,1) = clgeti ("ncols")
IM_LEN(out,2) = clgeti ("naps")
if (IM_LEN(out,2) == 1)
IM_NDIM(out) = 1
else
IM_NDIM(out) = 2
IM_PIXTYPE(out) = TY_REAL
call clgstr ("title", IM_TITLE(out), SZ_IMTITLE)
i = IM_NDIM(out)
mw = mw_open (NULL, i)
call mw_newsystem (mw, "equispec", i)
call mw_swtype (mw, 1, 1, "linear", "")
if (i > 1)
call mw_swtype (mw, 2, 1, "linear", "")
call mw_swattrs (mw, 1, "label", "Wavelength")
call mw_swattrs (mw, 1, "units", "Angstroms")
call smw_open (mw, NULL, out)
dtype = -1
nw = IM_LEN(out,1)
w0 = 1.
wpc = 1.
aplow[1] = INDEF
aplow[2] = INDEF
aphigh[1] = INDEF
aphigh[2] = INDEF
do i = 1, IM_LEN(out,2)
call smw_swattrs (mw, i, 1, i, i, dtype, w0, wpc, nw,
0D0, aplow, aphigh, "")
}
} else {
iferr (in = immap (Memc[input], READ_ONLY, 0)) {
call erract (EA_WARN)
next
}
iferr (out = immap (Memc[output], NEW_COPY, in)) {
call erract (EA_WARN)
call imunmap (in)
next
}
iferr (mw = smw_openim (in)) {
call imunmap (in)
call imunmap (out)
call erract (EA_WARN)
next
}
new = false
}
line = max (1, min (clgeti ("ap"), IM_LEN(out,2)))
call smw_gwattrs (mw, line, 1, ap, beam, dtype, w0, wpc, nw,
z1, aplow, aphigh, coeff)
if (dtype < 0) {
dtype = 0
nw = min (clgeti ("ncols"), IM_LEN(out,1))
w0 = clgetd ("wstart")
wpc = (clgetd ("wend") - w0) / (nw - 1)
call smw_swattrs (mw, line, 1, ap, beam, dtype, w0, wpc, nw,
0D0, aplow, aphigh, "")
}
# Get the line list if given or create random lines.
ranlist = false
i = nowhite (Memc[lines], Memc[lines], SZ_FNAME)
if (access (Memc[lines], 0, 0) == YES) {
i = open (Memc[lines], READ_ONLY, TEXT_FILE)
nlines = 0
dtype = clgwrd ("profile", Memc[profile], SZ_FNAME, PTYPES)
x1 = clgetd ("peak")
x2 = clgetd ("gfwhm")
x3 = clgetd ("lfwhm")
seed = clgetl ("seed")
if (IS_INDEFL(seed))
seed1 = seed1 + clktime (long (0))
else
seed1 = seed
while (fscan (i) != EOF) {
call gargd (w)
call gargd (peak)
call gargwrd (Memc[profile], SZ_FNAME)
call gargd (gfwhm)
call gargd (lfwhm)
ptype = strdic (Memc[profile], Memc[profile], SZ_FNAME,
PTYPES)
if (ptype == 0)
ptype = dtype
switch (nscan()) {
case 0:
next
case 1:
peak = x1 * urand (seed1)
ptype = dtype
gfwhm = x2
lfwhm = x3
case 2:
ptype = dtype
gfwhm = x2
lfwhm = x3
case 3:
gfwhm = x2
lfwhm = x3
case 4:
switch (ptype) {
case GAUSS:
lfwhm = x3
case LORENTZ:
lfwhm = gfwhm
gfwhm = x2
case VOIGT:
lfwhm = x3
}
}
if (nlines == 0) {
j = 50
call malloc (ptypes, j, TY_INT)
call malloc (waves, j, TY_DOUBLE)
call malloc (peaks, j, TY_DOUBLE)
call malloc (gfwhms, j, TY_DOUBLE)
call malloc (lfwhms, j, TY_DOUBLE)
} else if (nlines == j) {
j = j + 10
call realloc (ptypes, j, TY_INT)
call realloc (waves, j, TY_DOUBLE)
call realloc (peaks, j, TY_DOUBLE)
call realloc (gfwhms, j, TY_DOUBLE)
call realloc (lfwhms, j, TY_DOUBLE)
}
Memi[ptypes+nlines] = ptype
Memd[waves+nlines] = z * w
Memd[peaks+nlines] = peak / z
Memd[gfwhms+nlines] = z * gfwhm
Memd[lfwhms+nlines] = z * lfwhm
nlines = nlines + 1
}
call close (i)
} else {
nlines = clgeti ("nlines")
ptype = clgwrd ("profile", Memc[profile], SZ_FNAME, PTYPES)
peak = clgetd ("peak")
gfwhm = clgetd ("gfwhm")
lfwhm = clgetd ("lfwhm")
seed = clgetl ("seed")
if (IS_INDEFL(seed))
seed1 = seed1 + clktime (long (0))
else
seed1 = seed
call malloc (ptypes, nlines, TY_INT)
call malloc (waves, nlines, TY_DOUBLE)
call malloc (peaks, nlines, TY_DOUBLE)
call malloc (gfwhms, nlines, TY_DOUBLE)
call malloc (lfwhms, nlines, TY_DOUBLE)
do i = 0, nlines-1 {
w = z * (w0 + wpc * (nw - 1) * urand (seed1))
x = (w - w0) / wpc / (nw - 1)
if (x < 0)
x = x - int (x - 1)
else
x = x - int (x)
w = w0 + wpc * (nw - 1) * x
Memi[ptypes+i] = ptype
Memd[waves+i] = w
Memd[peaks+i] = peak / z * urand (seed1)
Memd[gfwhms+i] = z * gfwhm
Memd[lfwhms+i] = z * lfwhm
}
if (nlines > 0 && Memc[lines] != EOS) {
i = open (Memc[lines], NEW_FILE, TEXT_FILE)
do j = 0, nlines-1 {
switch (Memi[ptypes+j]) {
case GAUSS:
call fprintf (i, "%g %g %10s %g\n")
call pargd (Memd[waves+j] / z)
call pargd (Memd[peaks+j] * z)
call pargstr ("gaussian")
call pargd (Memd[gfwhms+j] / z)
case LORENTZ:
call fprintf (i, "%g %g %10s %g\n")
call pargd (Memd[waves+j] / z)
call pargd (Memd[peaks+j] * z)
call pargstr ("lorentzian")
call pargd (Memd[lfwhms+j] / z)
case VOIGT:
call fprintf (i, "%g %g %10s %g %g\n")
call pargd (Memd[waves+j] / z)
call pargd (Memd[peaks+j] * z)
call pargstr ("voigt")
call pargd (Memd[gfwhms+j] / z)
call pargd (Memd[lfwhms+j] / z)
}
}
call close (i)
}
}
# Make the spectrum.
spec = impl2d (out, line)
if (new)
call aclrd (Memd[spec], IM_LEN(in,1))
else
call amovd (Memd[imgl2d(in, line)], Memd[spec], IM_LEN(in,1))
# Make the lines.
call calloc (buf, nw, TY_DOUBLE)
do i = 0, nlines-1 {
ptype = Memi[ptypes+i]
w = (Memd[waves+i] - w0) / wpc + 1.
peak = Memd[peaks+i] * subsample
gfwhm = Memd[gfwhms+i] / abs(wpc)
lfwhm = Memd[lfwhms+i] / abs(wpc)
x3 = max (ngfwhm*gfwhm, min (20D0, nlfwhm)*lfwhm)
x1 = max (1.0D0, w - x3)
x2 = min (double (nw), w + x3)
switch (ptype) {
case GAUSS:
x3 = -0.360674 * gfwhm**2
for (x = x1; x <= x2; x = x + subsample) {
j = buf + int (x - 0.5)
Memd[j] = Memd[j] + peak * exp ((x-w)**2 / x3)
}
case LORENTZ:
x3 = 0.25 * lfwhm**2
for (x = x1; x <= x2; x = x + subsample) {
j = buf + int (x - 0.5)
Memd[j] = Memd[j] + peak / (1 + (x-w)**2 / x3)
}
case VOIGT:
x3 = 1.66511 / gfwhm
cont = (lfwhm / 2 ) * x3
call voigt (0., real(cont), v, u)
peak = peak / v
for (x = x1; x <= x2; x = x + subsample) {
j = buf + int (x - 0.5)
call voigt (real((x-w)*x3), real(cont), v, u)
Memd[j] = Memd[j] + peak * v
}
}
}
# Make the continuum.
cont = clgetd ("continuum")
slope = clgetd ("slope")
temp = clgetd ("temperature")
if (clgetb ("fnu"))
fnu = 3
else
fnu = 5
if (temp > 0.) {
w = w0 * 1.0e-8
x1 = exp (1.4388 / (w * temp))
x2 = w**fnu * (x1-1.0)
w = w / z
wpc = wpc * 1.0e-8 / z
}
do i = 0, nw-1 {
x = cont + slope / wpc * ((w0 + wpc * i) / z - w0)
if (temp > 0.) {
x1 = exp (1.4388 / (w * temp))
x = x * (x2 / w**fnu / (x1-1.0))
w = w + wpc
}
if (x > 0.)
Memd[spec+i] = Memd[spec+i] +
max (0.0D0, x * (1. + Memd[buf+i]))
else
Memd[spec+i] = Memd[spec+i] + Memd[buf+i]
}
call mfree (ptypes, TY_INT)
call mfree (waves, TY_DOUBLE)
call mfree (peaks, TY_DOUBLE)
call mfree (gfwhms, TY_DOUBLE)
call mfree (lfwhms, TY_DOUBLE)
call mfree (buf, TY_DOUBLE)
# Add comment history of task parameters.
if (clgetb ("comments")) {
call strcpy ("# ", Memc[comment], LEN_COMMENT)
call cnvtime (clktime (0), Memc[comment+2], LEN_COMMENT-2)
call mkh_comment (out, Memc[comment])
call mkh_comment (out, "begin mk1dspec")
call mkh_comment1 (out, "ap", 'i')
call mkh_comment1 (out, "rv", 'd')
call mkh_comment1 (out, "z", 'b')
call mkh_comment1 (out, "wstart", 'd')
call mkh_comment1 (out, "wend", 'd')
call mkh_comment1 (out, "continuum", 'd')
call mkh_comment1 (out, "slope", 'd')
call mkh_comment1 (out, "temperature", 'd')
call mkh_comment1 (out, "fnu", 'b')
if (nlines > 0) {
if (Memc[lines] != EOS)
call mkh_comment1 (out, "lines", 's')
call sprintf (Memc[comment], LEN_COMMENT, "%9tnlines%24t%d")
call pargi (nlines)
call mkh_comment (out, Memc[comment])
if (ranlist) {
call mkh_comment1 (out, "profile", 's')
call mkh_comment1 (out, "peak", 'd')
call mkh_comment1 (out, "gfwhm", 'd')
call mkh_comment1 (out, "lfwhm", 'd')
call mkh_comment1 (out, "seed", 'i')
}
}
}
call smw_saveim (mw, out)
call smw_close (mw)
if (in != out)
call imunmap (in)
call imunmap (out)
}
call mfree (coeff, TY_CHAR)
call imtclose (ilist)
call imtclose (olist)
call imtclose (llist)
call sfree (sp)
end
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