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|
include <gset.h>
include "rvpackage.h"
include "rvflags.h"
include "rvcomdef.h"
include "rvplots.h"
include "rvfilter.h"
# FFT_COLON - Procedure to process the colon commands defined below. Most
# commands are for interactive editing of parameters to the task.
int procedure fft_colon (rv, cmdstr)
pointer rv #I RV struct pointer
char cmdstr[SZ_LINE] #I Command
pointer sp, cmd
int strdic()
begin
call smark (sp)
call salloc (cmd, SZ_LINE, TY_CHAR)
call sscan (cmdstr)
call gargwrd (Memc[cmd], SZ_LINE)
# Unpack the keyword from the string and look it up in the
# dictionary. Switch on command and call the appropriate routines.
if (strdic(Memc[cmd], Memc[cmd], SZ_LINE, FILT_KEYWORDS) != 0) {
# Process the FILTERPARS pset commands.
call filt_colon (rv, cmdstr)
} else {
# Now process the mode specific colon commands.
switch (strdic(Memc[cmd], Memc[cmd], SZ_FNAME, PLOT_KEYWORDS)) {
case PLT_FILTER:
call cmd_filter (rv)
case PLT_FFT_ZOOM:
call cmd_fft_zoom (rv)
case PLT_LOG_SCALE:
call cmd_log_scale (rv)
case PLT_ONE_IMAGE:
call cmd_one_image (rv)
case PLT_OVERLAY:
call cmd_overlay (rv)
case PLT_PLOT:
call cmd_plot (rv)
case PLT_SPLIT_PLOT:
call cmd_split_plotx (rv)
case PLT_WHEN:
call cmd_when (rv)
default:
# Default action
call rv_mode_prompt (rv)
call rv_errmsg ("Type '?' for a list of commands.")
call sfree (sp)
return (ERR)
}
}
call sfree (sp)
return (OK)
end
# FFT_CURSOR - Get the next command from the user in the input cursor loop
# and perform the requested function.
int procedure fft_cursor (rv)
pointer rv #I RV struct pointer
pointer gp, sp, cmd, filt
int wcs, key
int ofnpts, rfnpts
real x, y
char ckey
bool prompt
int fft_colon(), clgcur(), stridx(), spc_cursor()
int rv_parent(), fft_pow2(), rv_chk_filter()
define exit_ 99
define replot_ 98
begin
# Update the mode counter.
RV_MODES(rv) = (RV_MODES(rv)*10) + FFT_MODE
call smark (sp)
call salloc (cmd, SZ_LINE, TY_CHAR)
# Nab some pointers.
ofnpts = fft_pow2 (RV_NPTS(rv))
rfnpts = fft_pow2 (RV_RNPTS(rv))
gp = RV_GP(rv)
# if (RVF_LASTKEY(rv) == 'p' && RV_FILTER(rv) != NONE)
# key = 'p'
# else
key = 'b'
repeat {
RV_CMD(rv) = key
ckey = key
if (stridx(ckey,":?iqrsx") == 0)
RVF_LASTKEY(rv) = key
prompt = true
replot_ RV_NEWGRAPH(rv) = NO
switch (key) { # switch on the keystroke
case '?':
# List options
call gpagefile (gp, FM_HELP, "FFT Mode Options: ")
case ':':
# Process a colon command.
if (fft_colon(rv,Memc[cmd]) == OK) {
if (RV_NEWGRAPH(rv) == YES) {
key = RVF_LASTKEY(rv)
goto replot_
}
}
prompt = false
case 'b':
# Display power spectra before filtering
RVP_WHEN(rv) = BEFORE
RVP_PLOT(rv) = POWER_PLOT
call fft_plot (rv, RVP_PLOT(rv))
case 'f':
# Display FFT's after filtering.
if (RV_FILTER(rv) == NONE) {
call rv_mode_prompt (rv)
call rv_errmsg ("Filtering is currently disabled.")
prompt = false
} else {
RVP_WHEN(rv) = AFTER
RVP_PLOT(rv) = AMPLITUDE_PLOT
call fft_plot (rv, RVP_PLOT(rv))
}
case 'g':
# Display FFT's before filtering.
RVP_WHEN(rv) = BEFORE
RVP_PLOT(rv) = AMPLITUDE_PLOT
call fft_plot (rv, RVP_PLOT(rv))
case 'i':
# Print period trend information.
call rv_mode_prompt (rv)
call fft_inverse (rv, x, y, wcs)
prompt = false
case 'I':
call error (0, "Interrupt")
case 'o':
# Display filtered and unfiltered object spectrum.
if (RV_FILTER(rv) == OBJ_ONLY || RV_FILTER(rv) == BOTH) {
if (rv_chk_filter(rv, OBJECT_SPECTRUM) != OK) {
call rv_mode_prompt (rv)
call rv_errmsg ("Invalid filter specified.")
prompt = false
} else {
call malloc (filt, ofnpts, TY_REAL)
call gclear (gp)
if (RV_CONTINUUM(rv)==BOTH ||
RV_CONTINUUM(rv)==OBJ_ONLY) {
call amovr (OCONT_DATA(rv,1), Memr[filt],
RV_NPTS(RV))
call split_plot (rv, gp, TOP, OCONT_DATA(rv,1),
RV_NPTS(rv), OBJECT_SPECTRUM, NORM_PLOT)
} else {
call amovr (OBJPIXY(rv,1), Memr[filt], RV_NPTS(rv))
call split_plot (rv, gp, TOP, OBJPIXY(rv,1),
RV_NPTS(rv), OBJECT_SPECTRUM, SPECTRUM_PLOT)
}
call rv_do_filter (rv, RV_OSAMPLE(rv), Memr[filt],
RV_NPTS(rv), Memr[filt], ofnpts, NO)
call split_plot (rv, gp, BOTTOM, Memr[filt],
RV_NPTS(rv), OBJECT_SPECTRUM, FILTER_PLOT)
call mfree (filt, TY_REAL)
}
} else {
call rv_mode_prompt (rv)
call rv_errmsg ("Filtering disabled for object spectrum.")
prompt = false
}
case 'p':
# Display power spectra after filtering.
if (RV_FILTER(rv) == NONE) {
call rv_mode_prompt (rv)
call rv_errmsg ("Filtering is currently disabled.")
prompt = false
} else {
RVP_WHEN(rv) = AFTER
RVP_PLOT(rv) = POWER_PLOT
call fft_plot (rv, RVP_PLOT(rv))
}
case 'q':
# Quit this mode.
break
case 'r':
# Replot.
if (RVF_LASTKEY(rv) != 'r')
key = RVF_LASTKEY(rv)
goto replot_
case 's':
# Display the spectra.
if (rv_parent(rv) == SPEC_MODE) {
goto exit_
} else if (spc_cursor (rv) == QUIT) {
RV_MODES(rv) = (RV_MODES(rv) - FFT_MODE) / 10
call sfree (sp)
return (QUIT)
} else {
key = RVF_LASTKEY(rv)
goto replot_
}
case 't':
# Display filtered and unfiltered template spectrum.
if (RV_FILTER(rv) == TEMP_ONLY || RV_FILTER(rv) == BOTH) {
if (rv_chk_filter(rv, REFER_SPECTRUM) != OK) {
call rv_mode_prompt (rv)
call rv_errmsg ("Invalid filter specified.")
prompt = false
} else {
call malloc (filt, rfnpts, TY_REAL)
call gclear (gp)
if (RV_CONTINUUM(rv)==BOTH ||
RV_CONTINUUM(rv)==TEMP_ONLY) {
call amovr (RCONT_DATA(rv,1), Memr[filt],
RV_RNPTS(rv))
call split_plot (rv, gp, TOP, RCONT_DATA(rv,1),
RV_RNPTS(rv), REFER_SPECTRUM, NORM_PLOT)
} else {
call amovr (REFPIXY(rv,1), Memr[filt], RV_RNPTS(rv))
call split_plot (rv, gp, TOP, REFPIXY(rv,1),
RV_RNPTS(rv), REFER_SPECTRUM, SPECTRUM_PLOT)
}
call rv_do_filter (rv, RV_RSAMPLE(rv), Memr[filt],
RV_RNPTS(rv), Memr[filt], rfnpts, NO)
call split_plot (rv, gp, BOTTOM, Memr[filt],
RV_RNPTS(rv), REFER_SPECTRUM, FILTER_PLOT)
call mfree (filt, TY_REAL)
}
} else {
call rv_mode_prompt (rv)
call rv_errmsg ("Filtering disabled for template spectrum.")
prompt = false
}
case 'x':
# Return to correlation mode.
RV_MODES(rv) = (RV_MODES(rv) - FFT_MODE) / 10
call sfree (sp)
return (QUIT)
default:
# Unknown command.
call rv_mode_prompt (rv)
call rv_errmsg ("Type '?' for a list of commands.")
prompt = false
}
if (prompt)
call rv_mode_prompt (rv)
ckey = key
if (stridx(ckey,":?iqrsx") == 0)
RVF_LASTKEY(rv) = key
} until (clgcur("cursor",x,y,wcs,key,Memc[cmd],SZ_LINE) == EOF)
exit_ call sfree (sp)
RV_MODES(rv) = (RV_MODES(rv) - FFT_MODE) / 10
return (OK)
end
# FFT_PLOT - Do the plotting for the FFT plotting subpackage and determine
# the type of plot to draw.
procedure fft_plot (rv, flags)
pointer rv #I RV struct pointer
int flags #I Type of plot to draw
begin
# Get the graphics pointer and clear the workstation.
if (RV_GP(rv) != NULL)
call gclear (RV_GP(rv))
else
return
# Call the plot primitives.
switch (flags) {
case AMPLITUDE_PLOT:
call fft_fplot (rv, RVP_SPLIT_PLOT(rv))
case POWER_PLOT:
call fft_pplot (rv, RVP_SPLIT_PLOT(rv))
default:
call error (0, "Invalid FFT plot specification.")
}
end
# FFT_FLTPLOT - Plot the (filtered) spectrum to the screen.
procedure fft_fltplot (rv, gp, vec, npts)
pointer rv #I RV struct pointer
pointer gp #I graphics descriptor
real vec[ARB] #I Data to be plotted
int npts #I Npts of data to plot
pointer sp
pointer objx, title, idsys
int i
real x1, x2, y1, y2
double dex()
begin
if (gp == NULL)
return
call smark (sp)
call salloc (objx, npts, TY_REAL)
call salloc (idsys, SZ_LINE, TY_CHAR)
call salloc (title, 4*SZ_LINE, TY_CHAR)
call gclear (gp)
# Scale the vector.
if (RV_DCFLAG(rv) == -1) {
do i = 1, npts
Memr[objx+i-1] = real (i)
} else {
do i = 1, npts
Memr[objx+i-1] = dex (RV_OW0(rv) + (i-1) * RV_OWPC(rv))
}
# Scale the WCS.
call gascale (gp, Memr[objx], npts, 1)
call gascale (gp, vec, npts, 2)
# Force a pretty Y scaling.
call ggwind (gp, x1, x2, y1, y2)
y1 = y1 - (0.02*y1)
y2 = y2 + (0.02*y2)
call gswind (gp, x1, x2, y1, y2)
# Do the title and labeling.
call sysid (Memc[idsys], SZ_LINE)
call sprintf (Memc[title], 4*SZ_LINE,
"%s\nObject='%s' Star='%s'\nnpts=%d aperture=%d")
call pargstr (Memc[idsys])
call pargstr (IMAGE(rv))
call pargstr (OBJNAME(rv))
call pargi (npts)
call pargi (RV_APNUM(rv))
call glabax (gp, Memc[title], "wavelength", "intensity")
# Draw the vectors.
call gpline (gp, Memr[objx], vec, npts)
call gflush (gp)
call sfree (sp)
end
# FFT_GFILTER - Fill an array with the requested filter function so that
# it may be overplotted on the FFT plot.
procedure fft_gfilter (rv, filt, npts, y2)
pointer rv #I RV struct pointer
real filt[npts] #U FFT data array
int npts #I no. elements in fft[]
real y2 #I Upper limit of plot
pointer sp, buf
int i, npts2
real tmp
begin
call smark (sp)
call salloc (buf, 2*npts, TY_REAL)
call aclrr (Memr[buf], 2*npts)
npts2 = 2 * npts # initializations
if (RVP_LOG_SCALE(rv) == YES)
y2 = 10.0 ** y2
call amovkr (y2, Memr[buf], npts2)
# Now apply the filter to get the function.
call rv_filter (rv, Memr[buf], npts)
# Now recover the filter function.
do i = 1, npts {
tmp = Memr[buf+i-1]
if (RVP_LOG_SCALE(rv) == YES && tmp != 0.0)
filt[i] = log10 (tmp)
else
filt[i] = tmp
}
call sfree (sp)
end
# PLOT_OVERLAY - Plot the filter function overlayed on the FFT plot.
procedure fft_fltoverlay (rv, gp, fnpts, y2)
pointer rv #I RV struct pointer
pointer gp #I Graphics decriptor
int fnpts #I Npts in FFT
real y2 #I Current Y2 of window
pointer sp, filt
real startp, endp
int rv_chk_filter(), fft_pow2()
begin
if (gp == NULL || RVP_OVERLAY(rv) == NO)
return
# Check for a nonsensical filter specification.
if (RV_WHERE(rv) == TOP && rv_chk_filter(rv,OBJECT_SPECTRUM) != OK)
return
if (RV_WHERE(rv) == BOTTOM && rv_chk_filter(rv,REFER_SPECTRUM) != OK)
return
fnpts = max (fft_pow2 (RV_NPTS(rv)), fft_pow2 (RV_RNPTS(rv)) ) / 2
# Allocate working space.
call smark (sp)
call salloc (filt, 2*fnpts, TY_REAL)
# Get the filter to be plotted.
y2 = y2 - (0.075 * y2)
call fft_gfilter (rv, Memr[filt], 2*fnpts, y2)
# Compute the endpoint.
if (RV_WHERE(rv) == BOTTOM) {
startp = 1.
endp = real(fnpts) / RVP_FFT_ZOOM(rv)
} else {
startp = 0.
endp = (real(fnpts) / RVP_FFT_ZOOM(rv)) / (2. * real(fnpts))
}
fnpts = fnpts * 2
# Now plot the filter function.
call gseti (gp, G_PLCOLOR, C_RED)
call gvline (gp, Memr[filt], int(fnpts/RVP_FFT_ZOOM(rv)), startp, endp)
call gseti (gp, G_PLCOLOR, C_FOREGROUND)
if (DEBUG(rv)) {
call d_printf (DBG_FD(rv),"flt_overlay:\tstart=%g end=%g\n")
call pargr (startp) ; call pargr (endp)
call d_printf (DBG_FD(rv),"\t\tnew=%d np=%d rnp=%d fnp=%d\n")
call pargi (fnpts) ;call pargi (RV_NPTS(rv))
call pargi (RV_RNPTS(rv)) ; call pargi (RV_FFTNPTS(rv))
call flush (DBG_FD(rv))
}
call sfree (sp)
end
# FFT_FPLOT - Plot the (two) Fourier transforms to the screen.
procedure fft_fplot (rv, flag)
pointer rv #I RV struct pointer
int flag #I Type of flag to print (SINGLE/SPLIT)
pointer gp
pointer sp, rfft, title, bp, ylbl
int fnpts
int fft_pow2()
real x1, x2, y1, y2, startp, endp
begin
gp = RV_GP(rv)
if (gp == NULL)
return
# Allocate working space.
call smark (sp)
call salloc (rfft, 2*fft_pow2(RV_NPTS(rv)), TY_REAL)
call salloc (title, 2*SZ_LINE, TY_CHAR)
call salloc (ylbl, SZ_LINE, TY_CHAR)
call salloc (bp, SZ_LINE, TY_CHAR)
# Clear the screen.
call gclear (gp)
if (flag == SINGLE_PLOT) {
if (RVP_ONE_IMAGE(rv) == OBJECT_SPECTRUM) {
if (RV_CONTINUUM(rv) != NONE) {
call get_fft (rv,OCONT_DATA(rv,1), RV_NPTS(rv), Memr[rfft],
fnpts)
} else {
call get_fft (rv,OBJPIXY(rv,1), RV_NPTS(rv), Memr[rfft],
fnpts)
}
} else {
if (RV_CONTINUUM(rv) != NONE) {
call get_fft (rv,RCONT_DATA(rv,1), RV_RNPTS(rv), Memr[rfft],
fnpts)
} else {
call get_fft (rv,REFPIXY(rv,1), RV_RNPTS(rv), Memr[rfft],
fnpts)
}
}
# Draw the plot to the screen
fnpts = max (RV_FFTNPTS(rv), fnpts) / 2
call gascale (gp, Memr[rfft], int(fnpts/RVP_FFT_ZOOM(rv)), 2)
call ggwind (gp, x1, x2, y1, y2)
call get_anplot_title (rv, title)
if (RVP_LOG_SCALE(rv) == YES)
call strcpy ("log(|G(k)|)", Memc[ylbl], SZ_FNAME)
else
call strcpy ("|G(k)|", Memc[ylbl], SZ_FNAME)
# Draw the top axis labels
startp = 0.0
endp = (real(fnpts) / RVP_FFT_ZOOM(rv)) / (2. * real(fnpts))
call gseti (gp, G_WCS, 1)
call gsview (gp, 0.115, 0.95, 0.125, 0.8)
call gswind (gp, startp, endp, y1, y2)
call gseti (gp, G_XDRAWAXES, 2)
call glabax (gp, "", "", Memc[ylbl])
# Draw the bottom axis labels
startp = 1.0
endp = real(fnpts) / RVP_FFT_ZOOM(rv)
call gseti (gp, G_WCS, 2)
call gsview (gp, 0.115, 0.95, 0.125, 0.8)
call gswind (gp, startp, endp, y1, y2)
call gseti (gp, G_XDRAWAXES, 1)
call gseti (gp, G_YDRAWAXES, 3)
call glabax (gp, "", "Wavenumber", Memc[ylbl])
# Do the plot title
call gseti (gp, G_WCS, 3)
call gsview (gp, 0.115, 0.95, 0.125, 0.845)
call gswind (gp, startp, endp, y1, y2)
call gseti (gp, G_XDRAWAXES, 0)
call gseti (gp, G_YDRAWAXES, 0)
call glabax (gp, Memc[title], "", "")
call gsview (gp, 0.115, 0.95, 0.125, 0.8)
call gvline (gp, Memr[rfft], int(fnpts/RVP_FFT_ZOOM(rv)),
startp, endp)
# Lastly, annotate ther plot so we know what we're looking at.
call gctran (gp, 0.73, 0.73, x1, y1, 0, 1)
call gseti (gp, G_TXCOLOR, RV_TXTCOLOR(rv))
if (RVP_ONE_IMAGE(rv) == OBJECT_SPECTRUM)
call gtext (gp, x1, y1, "Object FFT", "")
else
call gtext (gp, x1, y1, "Template FFT", "")
call gctran (gp, 0.73, 0.69, x1, y1, 0, 1)
if (RV_FILTER(rv) == BOTH || RV_FILTER(rv) == OBJ_ONLY) {
call fft_fltoverlay (rv, gp, fnpts*2, y2)
if (RVP_WHEN(rv) == BEFORE)
call gtext (gp, x1, y1, "Before Filter", "")
else
call gtext (gp, x1, y1, "After Filter", "")
}
call gseti (gp, G_TXCOLOR, C_FOREGROUND)
call gseti (gp, G_XDRAWAXES, 3) # reset gio flags
} else if (flag == SPLIT_PLOT) {
# Plot the Object power stectrum along the top.
if (RV_CONTINUUM(rv) == OBJ_ONLY || RV_CONTINUUM(rv) == BOTH) {
call split_plot (rv, gp, TOP, OCONT_DATA(rv,1), RV_NPTS(rv),
OBJECT_SPECTRUM, FOURIER_PLOT)
} else {
call split_plot (rv, gp, TOP, OBJPIXY(rv,1), RV_NPTS(rv),
OBJECT_SPECTRUM, FOURIER_PLOT)
}
# Template power spectrum along the bottom.
if (RV_CONTINUUM(rv) == TEMP_ONLY || RV_CONTINUUM(rv) == BOTH) {
call split_plot (rv, gp, BOTTOM, RCONT_DATA(rv,1),
RV_RNPTS(rv), REFER_SPECTRUM, FOURIER_PLOT)
} else {
call split_plot (rv, gp, BOTTOM, REFPIXY(rv,1),
RV_RNPTS(rv), REFER_SPECTRUM, FOURIER_PLOT)
}
}
call sfree (sp)
end
# FFT_INVERSE - Print the inverse of the X-axis of the current plot. The intent
# of this routine is to provide an easy mechanism for users to translate the
# frequency of a point on the power spectrum into a period trend in the data.
# It may also be used to translate wavelengths into approximate wavenumbers.
procedure fft_inverse (rv, x, y, wcs)
pointer rv #I RV struct pointer
real x, y #I Current cursor (x,y)
int wcs #I WCS of cursor read
pointer gp
real period
real x1, x2, y1, y2, xx, yy
int fnpts, fft_pow2()
begin
gp = RV_GP(rv)
if (gp == NULL)
return
# Switch based on the plot flags.
call ggview (gp, x1, x2, y1, y2)
call gctran (gp, x, y, x, y, wcs, 1)
call gctran (gp, x, y, xx, yy, 1, 0)
fnpts = fft_pow2 (max(RV_NPTS(rv),RV_RNPTS(rv))) / 2
if (xx < x1 || xx > x2) { # outside plot window
call printf ("Period trend in the data = INDEF.")
return
} else {
period = (1. / x) * real(fnpts * 2.)
call printf (
"Period trend in the data = %.2f pixels (K = %d, f = %.3f).")
call pargr (period)
call pargi (int(x))
call pargr (x/real(fnpts))
}
end
# FFT_PPLOT - Plot the (two) Fourier power spectra to the screen.
procedure fft_pplot (rv, flag)
pointer rv #I RV struct pointer
int flag #I Type of flag to print (SINGLE/SPLIT)
pointer gp
pointer sp, rfft, title, bp, xlbl, ylbl
int fnpts
int fft_pow2()
real startp, endp
real x1, x2, y1, y2
begin
gp = RV_GP(rv)
if (gp == NULL)
return
# Allocate working space.
call smark (sp)
call salloc (bp, SZ_LINE, TY_CHAR)
call salloc (xlbl, SZ_LINE, TY_CHAR)
call salloc (ylbl, SZ_LINE, TY_CHAR)
call salloc (title, 3*SZ_LINE, TY_CHAR)
call salloc (rfft, fft_pow2(RV_NPTS(rv)), TY_REAL)
# Clear the screen.
call gclear (gp)
if (flag == SINGLE_PLOT) {
if (RVP_ONE_IMAGE(rv) == OBJECT_SPECTRUM) {
if (RV_CONTINUUM(rv) != NONE) {
call get_fft (rv,OCONT_DATA(rv,1), RV_NPTS(rv), Memr[rfft],
fnpts)
} else {
call get_fft (rv,OBJPIXY(rv,1), RV_NPTS(rv), Memr[rfft],
fnpts)
}
} else {
if (RV_CONTINUUM(rv) != NONE) {
call get_fft (rv,RCONT_DATA(rv,1), RV_RNPTS(rv), Memr[rfft],
fnpts)
} else {
call get_fft (rv,REFPIXY(rv,1), RV_RNPTS(rv), Memr[rfft],
fnpts)
}
}
# Draw the plot to the screen
fnpts = max (RV_FFTNPTS(rv), fnpts) / 2
call gascale (gp, Memr[rfft], int(fnpts/RVP_FFT_ZOOM(rv)), 2)
call ggwind (gp, x1, x2, y1, y2)
call get_anplot_title (rv, title)
if (RVP_LOG_SCALE(rv) == YES)
call strcpy ("log(|G(k)|)", Memc[ylbl], SZ_FNAME)
else
call strcpy ("|G(k)|", Memc[ylbl], SZ_FNAME)
# Draw the bottom axis labels
startp = 1.0
endp = real(fnpts) / RVP_FFT_ZOOM(rv)
call gseti (gp, G_WCS, 2)
call gsview (gp, 0.115, 0.95, 0.125, 0.8)
call gswind (gp, startp, endp, y1, y2)
call gseti (gp, G_XDRAWAXES, 1)
call gseti (gp, G_YDRAWAXES, 3)
call glabax (gp, "", "Wavenumber", Memc[ylbl])
# Draw the top axis labels
startp = 0.0
endp = (real(fnpts) / RVP_FFT_ZOOM(rv)) / (2. * real(fnpts))
call gseti (gp, G_WCS, 1)
call gsview (gp, 0.115, 0.95, 0.125, 0.8)
call gswind (gp, startp, endp, y1, y2)
call gseti (gp, G_XDRAWAXES, 2)
call glabax (gp, "", "", Memc[ylbl])
# Do the plot title
call gseti (gp, G_WCS, 3)
call gsview (gp, 0.115, 0.95, 0.125, 0.845)
call gswind (gp, startp, endp, y1, y2)
call gseti (gp, G_XDRAWAXES, 0)
call gseti (gp, G_YDRAWAXES, 0)
call glabax (gp, Memc[title], "", "")
call gsview (gp, 0.115, 0.95, 0.125, 0.8)
call gvline (gp, Memr[rfft], int(fnpts/RVP_FFT_ZOOM(rv)),
startp, endp)
# Lastly, annotate the plot so we know what we're looking at.
call gctran (gp, 0.73, 0.73, x1, y1, 0, 1)
call gseti (gp, G_TXCOLOR, RV_TXTCOLOR(rv))
if (RVP_ONE_IMAGE(rv) == OBJECT_SPECTRUM)
call gtext (gp, x1, y1, "Object PS", "")
else
call gtext (gp, x1, y1, "Template PS", "")
call gctran (gp, 0.73, 0.69, x1, y1, 0, 1)
if (RV_FILTER(rv) == BOTH || RV_FILTER(rv) == OBJ_ONLY) {
call fft_fltoverlay (rv, gp, fnpts*2, y2)
if (RVP_WHEN(rv) == BEFORE)
call gtext (gp, x1, y1, "Before Filter", "")
else
call gtext (gp, x1, y1, "After Filter", "")
}
call gseti (gp, G_TXCOLOR, C_FOREGROUND)
call gseti (gp, G_XDRAWAXES, 3) # reset gio flags
} else if (flag == SPLIT_PLOT) {
# Plot the Object power stectrum along the top.
if (RV_CONTINUUM(rv) == OBJ_ONLY || RV_CONTINUUM(rv) == BOTH) {
call split_plot (rv, gp, TOP, OCONT_DATA(rv,1), RV_NPTS(rv),
OBJECT_SPECTRUM, PS_PLOT)
} else {
call split_plot (rv, gp, TOP, OBJPIXY(rv,1), RV_NPTS(rv),
OBJECT_SPECTRUM, PS_PLOT)
}
# Template power spectrum along the bottom.
if (RV_CONTINUUM(rv) == TEMP_ONLY || RV_CONTINUUM(rv) == BOTH) {
call split_plot (rv, gp, BOTTOM, RCONT_DATA(rv,1),
RV_RNPTS(rv), REFER_SPECTRUM, PS_PLOT)
} else {
call split_plot (rv, gp, BOTTOM, REFPIXY(rv,1),
RV_RNPTS(rv), REFER_SPECTRUM, PS_PLOT)
}
}
call sfree (sp)
end
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