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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <gset.h>
include <mach.h>
include <imhdr.h>
include <mwset.h>
# T_PROWS -- Plot the average of a range of rows from an image.
procedure t_prows()
pointer image, wcslab, fmt
pointer im, mw, ct, sp, x_vec, y_vec
int row1, row2, ncols, nlines
real zmin, zmax
int clgeti()
pointer immap(), mw_openim(), mw_sctran()
begin
call smark (sp)
call salloc (image, SZ_FNAME, TY_CHAR)
call salloc (wcslab, SZ_LINE, TY_CHAR)
call salloc (fmt, SZ_LINE, TY_CHAR)
# Open image
call clgstr ("image", Memc[image], SZ_FNAME)
im = immap (Memc[image], READ_ONLY, 0)
call clgstr ("wcs", Memc[wcslab], SZ_LINE)
mw = mw_openim (im)
call mw_seti (mw, MW_USEAXMAP, NO)
ct = mw_sctran (mw, "logical", Memc[wcslab], 0)
ncols = IM_LEN(im,1)
nlines = IM_LEN(im,2)
row1 = clgeti ("row1")
row2 = clgeti ("row2")
if (min(row1,row2) < 1 || max(row1,row2) > nlines) {
call imunmap (im)
call error (2, "line index references outside image")
}
# Get the requested rows from the image.
call malloc (x_vec, ncols, TY_REAL)
call malloc (y_vec, ncols, TY_REAL)
call plt_grows (im, mw, ct, min(row1,row2), max(row1,row2),
Memr[x_vec], Memr[y_vec], zmin, zmax, Memc[wcslab], Memc[fmt],
SZ_LINE)
# Now draw the vector to the screen.
call pr_draw_vector (Memc[image], Memr[x_vec], Memr[y_vec], ncols,
zmin, zmax, row1, row2, Memc[wcslab], Memc[fmt], true)
# Free resources.
call mfree (x_vec, TY_REAL)
call mfree (y_vec, TY_REAL)
call imunmap (im)
call sfree (sp)
end
# PLT_GROWS -- Get the average of specified rows from the image. The average
# data vector is returned as y_vector; the column coordinates are returned in
# x_vector. The data vector min and max are also returned.
procedure plt_grows (im, mw, ct, row1, row2, x_vector, y_vector, zmin, zmax,
wcslab, format, sz_wcslab)
pointer im # Pointer to image section header
pointer mw # MWCS pointer
pointer ct # CT pointer
int row1 # The first row to be extracted
int row2 # The last row to be extracted
real x_vector[ARB] # Data values in x direction (returned)
real y_vector[ARB] # Data values in y direction (returned)
real zmin, zmax # Minimum and maximum values in y_vector (returned)
char wcslab[sz_wcslab] # WCS label if present
char format[sz_wcslab] # WCS format if present
int sz_wcslab # String length
int i, ncols, nrows
pointer sp, axvals, imgl2r()
begin
call smark (sp)
call salloc (axvals, IM_MAXDIM, TY_REAL)
# Fill x and y arrays.
ncols = IM_LEN(im,1)
nrows = row2 - row1 + 1
Memr[axvals+1] = (row1 + row2) / 2.
call plt_wcs (im, mw, ct, 1, Memr[axvals], 1., real(ncols), x_vector,
ncols, wcslab, format, sz_wcslab)
call aclrr (y_vector, ncols)
do i = row1, row2 {
call aaddr (Memr[imgl2r(im,i)], y_vector, y_vector, ncols)
}
call adivkr (y_vector, real(nrows), y_vector, ncols)
# Now find min and max values in y array.
call alimr (y_vector, ncols, zmin, zmax)
call sfree (sp)
end
# PR_DRAW_VECTOR -- Draw the projected vector to the screen.
procedure pr_draw_vector (image,
xvec, yvec, ncols, zmin, zmax, row1, row2, wcslab, format, prows)
char image[SZ_FNAME] #I image name
real xvec[ncols], yvec[ncols] #I vectors to be plot
int ncols #I number of columns
real zmin, zmax #I vector min max
int row1, row2 #I selected rows
char wcslab[ARB] #I WCS label
char format[ARB] #I WCS format
bool prows #I is task PROWS (y/n)
pointer sp, gp
pointer device, marker, xlabel, ylabel, title, suffix
real wx1, wx2, wy1, wy2, vx1, vx2, vy1, vy2, szm, tol
int mode, imark
bool pointmode
pointer gopen()
real clgetr(), plt_iformatr()
bool clgetb(), streq()
int btoi(), clgeti()
begin
call smark (sp)
call salloc (device, SZ_FNAME, TY_CHAR)
call salloc (marker, SZ_FNAME, TY_CHAR)
call salloc (xlabel, SZ_LINE, TY_CHAR)
call salloc (ylabel, SZ_LINE, TY_CHAR)
call salloc (title, SZ_LINE, TY_CHAR)
call salloc (suffix, SZ_FNAME, TY_CHAR)
call clgstr ("device", Memc[device], SZ_FNAME)
mode = NEW_FILE
if (clgetb ("append"))
mode = APPEND
gp = gopen (Memc[device], mode, STDGRAPH)
tol = 10. * EPSILONR
if (mode != APPEND) {
call clgstr ("xformat", Memc[xlabel], SZ_LINE)
if (!streq (Memc[xlabel], "wcsformat"))
call strcpy (Memc[xlabel], format, SZ_FNAME)
call clgstr ("xlabel", Memc[xlabel], SZ_LINE)
if (streq (Memc[xlabel], "wcslabel"))
call strcpy (wcslab, Memc[xlabel], SZ_LINE)
call clgstr ("title", Memc[title], SZ_LINE)
if (streq (Memc[title], "imtitle")) {
call strcpy (image, Memc[title], SZ_LINE)
if (prows) {
call sprintf (Memc[suffix], SZ_FNAME, ": rows %d to %d")
call pargi (row1)
call pargi (row2)
} else {
call sprintf (Memc[suffix], SZ_FNAME, ": row %d")
call pargi (row1)
}
call strcat (Memc[suffix], Memc[title], SZ_LINE)
}
call clgstr ("ylabel", Memc[ylabel], SZ_LINE)
# Establish window.
wx1 = plt_iformatr (clgetr ("wx1"), format)
wx2 = plt_iformatr (clgetr ("wx2"), format)
wy1 = clgetr ("wy1")
wy2 = clgetr ("wy2")
# Set window limits to defaults if not specified by user.
if ((wx2 - wx1) < tol) {
wx1 = x_vec[1]
wx2 = x_vec[ncols]
}
if ((wy2 - wy1) < tol) {
wy1 = zmin
wy2 = zmax
}
call gswind (gp, wx1, wx2, wy1, wy2)
# Establish viewport.
vx1 = clgetr ("vx1")
vx2 = clgetr ("vx2")
vy1 = clgetr ("vy1")
vy2 = clgetr ("vy2")
# Set viewport only if specified by user.
if ((vx2 - vx1) > tol && (vy2 - vy1) > tol)
call gsview (gp, vx1, vx2, vy1, vy2)
else {
if (!clgetb ("fill"))
call gseti (gp, G_ASPECT, 1)
}
call gsets (gp, G_XTICKFORMAT, format)
call gseti (gp, G_XNMAJOR, clgeti ("majrx"))
call gseti (gp, G_XNMINOR, clgeti ("minrx"))
call gseti (gp, G_YNMAJOR, clgeti ("majry"))
call gseti (gp, G_YNMINOR, clgeti ("minry"))
call gseti (gp, G_ROUND, btoi (clgetb ("round")))
if (clgetb ("logx"))
call gseti (gp, G_XTRAN, GW_LOG)
if (clgetb ("logy"))
call gseti (gp, G_YTRAN, GW_LOG)
# Draw axes using all this information.
call glabax (gp, Memc[title], Memc[xlabel], Memc[ylabel])
}
pointmode = clgetb ("pointmode")
if (pointmode) {
call clgstr ("marker", Memc[marker], SZ_FNAME)
szm = clgetr ("szmarker")
call init_marker (Memc[marker], imark)
} else
call clgstr ("marker", Memc[marker], SZ_FNAME)
# Now to actually draw the plot.
if (pointmode)
call gpmark (gp, xvec, yvec, ncols, imark, szm, szm)
else
call hgpline (gp, xvec, yvec, ncols, Memc[marker])
call gflush (gp)
call gclose (gp)
call sfree (sp)
end
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