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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <gset.h>
include <config.h>
include <mach.h>
include <imhdr.h>
include <xwhen.h>
include <fset.h>
include "imexam.h"
# IE_EIMEXAM -- Contour map
# This is an interface to the NCAR CONREC routine.
procedure ie_eimexam (gp, mode, ie, x, y)
pointer gp # GIO pointer
int mode # Mode
pointer ie # IE pointer
real x, y # Center
bool banner
int nset, ncontours, dashpat, nhi
int x1, x2, y1, y2, nx, ny, npts, wkid
real vx1, vx2, vy1, vy2, xs, xe, ys, ye
real interval, floor, ceiling, zero, finc, zmin, zmax
pointer sp, title, hostid, user, xlabel, ylabel, im, data, data1
pointer pp, clopset(), ie_gdata(), ie_gimage()
bool clgpsetb(), fp_equalr()
int clgpseti(), btoi()
real clgpsetr()
int isizel, isizem, isizep, nrep, ncrt, ilab, nulbll, ioffd
int ioffm, isolid, nla, nlm
real xlt, ybt, side, ext, hold[5]
common /conre4/ isizel, isizem , isizep, nrep, ncrt, ilab, nulbll,
ioffd, ext, ioffm, isolid, nla, nlm, xlt, ybt, side
int first
common /conflg/ first
common /noaolb/ hold
begin
iferr (im = ie_gimage (ie, NO)) {
call erract (EA_WARN)
return
}
pp = IE_PP(ie)
if (pp != NULL)
call clcpset (pp)
pp = clopset ("eimexam")
IE_PP(ie) = pp
if (!IS_INDEF(x))
IE_X1(ie) = x
if (!IS_INDEF(y))
IE_Y1(ie) = y
nx = clgpseti (pp, "ncolumns")
ny = clgpseti (pp, "nlines")
x1 = IE_X1(ie) - (nx - 1) / 2 + 0.5
x2 = IE_X1(ie) + nx / 2 + 0.5
y1 = IE_Y1(ie) - (ny - 1) / 2 + 0.5
y2 = IE_Y1(ie) + ny / 2 + 0.5
iferr (data = ie_gdata (im, x1, x2, y1, y2)) {
call erract (EA_WARN)
return
}
nx = x2 - x1 + 1
ny = y2 - y1 + 1
npts = nx * ny
xs = x1
xe = x2
ys = y1
ye = y2
call smark (sp)
banner = false
if (mode == NEW_FILE) {
call gclear (gp)
# Set the WCS
call gswind (gp, xs, xe, ys, ye)
if (!clgpsetb (pp, "fill"))
call gsetr (gp, G_ASPECT, real (ny-1) / real (nx-1))
call gseti (gp, G_ROUND, btoi (clgpsetb (pp, "round")))
if (clgpsetb (pp, "box")) {
# Get number of major and minor tick marks.
call gseti (gp, G_XNMAJOR, clgpseti (pp, "majrx"))
call gseti (gp, G_XNMINOR, clgpseti (pp, "minrx"))
call gseti (gp, G_YNMAJOR, clgpseti (pp, "majry"))
call gseti (gp, G_YNMINOR, clgpseti (pp, "minry"))
# Label tick marks on axes?
call gseti (gp, G_LABELTICKS,
btoi (clgpsetb (pp, "ticklabels")))
# Labels
call salloc (title, IE_SZTITLE, TY_CHAR)
call salloc (hostid, SZ_LINE, TY_CHAR)
call salloc (user, SZ_LINE, TY_CHAR)
call salloc (xlabel, SZ_LINE, TY_CHAR)
call salloc (ylabel, SZ_LINE, TY_CHAR)
banner = clgpsetb (pp, "banner")
if (banner) {
call sysid (Memc[hostid], SZ_LINE)
# We must postpone the parameter line until after conrec.
call sprintf (Memc[title], IE_SZTITLE, "%s\n\n%s")
call pargstr (Memc[hostid])
call pargstr (IM_TITLE(im))
} else
Memc[title] = EOS
call clgpset (pp, "title", Memc[user], SZ_LINE)
if (Memc[user] != EOS) {
call strcat ("\n", Memc[title], IE_SZTITLE)
call strcat (Memc[user], Memc[title], IE_SZTITLE)
}
call clgpset (pp, "xlabel", Memc[xlabel], SZ_LINE)
call clgpset (pp, "ylabel", Memc[ylabel], SZ_LINE)
call glabax (gp, Memc[title], Memc[xlabel], Memc[ylabel])
}
}
# First of all, intialize conrec's block data before altering any
# parameters in common.
first = 1
call conbd
# Set contour parameters
zero = clgpsetr (pp, "zero")
floor = clgpsetr (pp, "floor")
ceiling = clgpsetr (pp, "ceiling")
nhi = clgpseti (pp, "nhi")
dashpat = clgpseti (pp, "dashpat")
# Resolve INDEF limits.
if (IS_INDEF (floor) || IS_INDEF (ceiling)) {
call alimr (Memr[data], npts, zmin, zmax)
if (IS_INDEF (floor))
floor = zmin
if (IS_INDEF (ceiling))
ceiling = zmax
}
# Apply the zero point shift.
if (abs (zero) > EPSILON) {
call salloc (data1, npts, TY_REAL)
call asubkr (Memr[data], zero, Memr[data1], npts)
floor = floor - zero
ceiling = ceiling - zero
} else
data1 = data
# Avoid conrec's automatic scaling.
if (floor == 0.)
floor = EPSILON
if (ceiling == 0.)
ceiling = EPSILON
# The user can suppress the contour labelling by setting the common
# parameter "ilab" to zero.
if (btoi (clgpsetb (pp, "label")) == NO)
ilab = 0
else
ilab = 1
# User can specify either the number of contours or the contour
# interval, or let conrec pick a nice number. Get params and
# encode the FINC param expected by conrec.
ncontours = clgpseti (pp, "ncontours")
if (ncontours <= 0) {
interval = clgpsetr (pp, "interval")
if (interval <= 0)
finc = 0
else
finc = interval
} else
finc = - abs (ncontours)
# Open device and make contour plot.
call gopks (STDERR)
wkid = 1
call gopwk (wkid, 6, gp)
call gacwk (wkid)
# Make the contour plot.
nset = 1 # No conrec viewport
ioffm = 1 # No conrec box
call gswind (gp, 1., real (nx), 1., real (ny))
call ggview (gp, vx1, vx2, vy1, vy2)
call set (vx1, vx2, vy1, vy2, 1.0, real (nx), 1.0, real (ny), 1)
call conrec (Memr[data1], nx, nx, ny, floor,
ceiling, finc, nset, nhi, -dashpat)
call gdawk (wkid)
call gclks ()
call gswind (gp, xs, xe, ys, ye)
if (banner) {
if (fp_equalr (hold(5), 1.0)) {
call sprintf (Memc[title], IE_SZTITLE,
"%s\n%s: Contoured from %g to %g, interval = %g\n%s")
call pargstr (Memc[hostid])
call pargstr (IE_IMNAME(ie))
call pargr (hold(1))
call pargr (hold(2))
call pargr (hold(3))
call pargstr (IM_TITLE(im))
} else {
call sprintf (Memc[title], IE_SZTITLE,
"%s\n%s:contoured from %g to %g, interval = %g, labels scaled by %g\n%s")
call pargstr (Memc[xlabel])
call pargstr (IE_IMNAME(ie))
call pargr (hold(1))
call pargr (hold(2))
call pargr (hold(3))
call pargr (hold(5))
call pargstr (IM_TITLE(im))
}
if (Memc[user] != EOS) {
call strcat ("\n", Memc[user], IE_SZTITLE)
call strcat (Memc[user], Memc[title], IE_SZTITLE)
}
call gseti (gp, G_DRAWAXES, NO)
call glabax (gp, Memc[title], "", "")
} else
call gtext (gp, xs, ys, "", "")
call sfree (sp)
end
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