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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <math.h>
include <math/gsurfit.h>
include <gset.h>
include "geomap.h"
include "geogmap.h"
define GHELPFILE "images$lib/geomap.key"
define CHELPFILE "images$lib/coomap.key"
$for (rd)
# GEO_MGFIT -- Fit the surface using interactive graphics.
procedure geo_mgfit$t (gd, fit, sx1, sy1, sx2, sy2, xref, yref, xin,
yin, wts, npts, xerrmsg, yerrmsg, maxch)
pointer gd #I graphics file descriptor
pointer fit #I pointer to the fit structure
pointer sx1 #I pointer to the linear x surface fit
pointer sy1 #I pointer to the linear y surface fit
pointer sx2 #I pointer to higher order x surface fit
pointer sy2 #I pointer to higher order y surface fit
PIXEL xref[npts] #I the x reference coordinates
PIXEL yref[npts] #I the y reference coordinates
PIXEL xin[npts] #I input x coordinates
PIXEL yin[npts] #I input y coordinates
PIXEL wts[npts] #I array of weights
int npts #I number of data points
char xerrmsg[ARB] #O the output x fit error message
char yerrmsg[ARB] #O the output x fit error message
int maxch #I the size of the error messages
char errstr[SZ_LINE]
int newgraph, delete, wcs, key, errcode
pointer sp, w, gfit, xresid, yresid, cmd
pointer gt1, gt2, gt3, gt4, gt5
real wx, wy
PIXEL xshift, yshift, xscale, yscale, thetax, thetay
int clgcur(), errget()
pointer gt_init()
errchk geo_fxy$t(), geo_mreject$t(), geo_ftheta$t()
errchk geo_fmagnify$t(), geo_flinear$t()
begin
# Initialize gfit structure and working space.
call smark (sp)
call salloc (gfit, LEN_GEOGRAPH, TY_STRUCT)
call salloc (xresid, npts, TY_PIXEL)
call salloc (yresid, npts, TY_PIXEL)
call salloc (w, npts, TY_PIXEL)
call salloc (cmd, SZ_LINE, TY_CHAR)
# Do initial fit.
iferr {
switch (GM_FIT(fit)) {
case GM_ROTATE:
call geo_ftheta$t (fit, sx1, sy1, xref, yref, xin, yin, wts,
Mem$t[xresid], Mem$t[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RSCALE:
call geo_fmagnify$t (fit, sx1, sy1, xref, yref, xin, yin, wts,
Mem$t[xresid], Mem$t[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RXYSCALE:
call geo_flinear$t (fit, sx1, sy1, xref, yref, xin, yin, wts,
Mem$t[xresid], Mem$t[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
default:
call geo_fxy$t (fit, sx1, sx2, xref, yref, xin, wts,
Mem$t[xresid], npts, YES, xerrmsg, maxch)
call geo_fxy$t (fit, sy1, sy2, xref, yref, yin, wts,
Mem$t[yresid], npts, NO, yerrmsg, maxch)
}
if (GM_MAXITER(fit) <= 0 || IS_INDEFD(GM_REJECT(fit)))
GM_NREJECT(fit) = 0
else
call geo_mreject$t (fit, sx1, sy1, sx2, sy2, xref, yref, xin,
yin, wts, Mem$t[xresid], Mem$t[yresid], npts, xerrmsg,
maxch, yerrmsg, maxch)
} then {
call sfree (sp)
if (GM_PROJECTION(fit) == GM_NONE)
call error (2, "Too few points for X and Y fits.")
else
call error (2, "Too few points for XI and ETA fits.")
}
GG_NEWFUNCTION(gfit) = NO
GG_FITERROR(gfit) = NO
errcode = OK
# Set up plotting defaults.
GG_PLOTTYPE(gfit) = FIT
GG_OVERPLOT(gfit) = NO
GG_CONSTXY(gfit) = YES
newgraph = NO
# Allocate graphics tools.
gt1 = gt_init ()
gt2 = gt_init ()
gt3 = gt_init ()
gt4 = gt_init ()
gt5 = gt_init ()
# Set the plot title and x and y axis labels.
call geo_gtset (FIT, gt1, fit)
call geo_gtset (XXRESID, gt2, fit)
call geo_gtset (XYRESID, gt3, fit)
call geo_gtset (YXRESID, gt4, fit)
call geo_gtset (YYRESID, gt5, fit)
# Make the first plot.
call gclear (gd)
call geo_label (FIT, gt1, fit)
call geo_1graph$t (gd, gt1, fit, gfit, xref, yref, xin, yin, wts,
npts)
if (GG_CONSTXY(gfit) == YES)
call geo_conxy$t (gd, fit, sx1, sy1, sx2, sy2)
call printf ("%s %s\n")
call pargstr (xerrmsg)
call pargstr (yerrmsg)
# Read the cursor commands.
call amov$t (wts, Mem$t[w], npts)
while (clgcur ("cursor", wx, wy, wcs, key, Memc[cmd], SZ_LINE) != EOF) {
switch (key) {
case 'q':
call amov$t (Mem$t[w], wts, npts)
break
case '?':
if (GM_PROJECTION(fit) == GM_NONE)
call gpagefile (gd, GHELPFILE, "")
else
call gpagefile (gd, CHELPFILE, "")
case ':':
call geo_colon (gd, fit, gfit, Memc[cmd], newgraph)
switch (GG_PLOTTYPE(gfit)) {
case FIT:
call gt_colon (Memc[cmd], gd, gt1, newgraph)
case XXRESID:
call gt_colon (Memc[cmd], gd, gt2, newgraph)
case XYRESID:
call gt_colon (Memc[cmd], gd, gt3, newgraph)
case YXRESID:
call gt_colon (Memc[cmd], gd, gt4, newgraph)
case YYRESID:
call gt_colon (Memc[cmd], gd, gt5, newgraph)
}
case 'l':
if (GG_FITERROR(gfit) == NO) {
call geo_lcoeff$t (sx1, sy1, xshift, yshift, xscale, yscale,
thetax, thetay)
call printf ("xshift: %.2f yshift: %.2f ")
call parg$t (xshift)
call parg$t (yshift)
call printf ("xmag: %0.3g ymag: %0.3g ")
call parg$t (xscale)
call parg$t (yscale)
call printf ("xrot: %.2f yrot: %.2f\n")
call parg$t (thetax)
call parg$t (thetay)
}
case 't':
if (GG_FITERROR(gfit) == NO && GG_PLOTTYPE(gfit) == FIT)
call geo_lxy$t (gd, fit, sx1, sy1, sx2, sy2, xref, yref,
xin, yin, npts, wx, wy)
case 'c':
if (GG_CONSTXY(gfit) == YES)
GG_CONSTXY(gfit) = NO
else if (GG_CONSTXY(gfit) == NO)
GG_CONSTXY(gfit) = YES
case 'd', 'u':
if (key == 'd')
delete = YES
else
delete = NO
switch (GG_PLOTTYPE(gfit)) {
case FIT:
call geo_1delete$t (gd, xin, yin, Mem$t[w], wts, npts, wx,
wy, delete)
case XXRESID:
call geo_2delete$t (gd, xref, Mem$t[xresid], Mem$t[w], wts,
npts, wx, wy, delete)
case XYRESID:
call geo_2delete$t (gd, yref, Mem$t[xresid], Mem$t[w], wts,
npts, wx, wy, delete)
case YXRESID:
call geo_2delete$t (gd, xref, Mem$t[yresid], Mem$t[w], wts,
npts, wx, wy, delete)
case YYRESID:
call geo_2delete$t (gd, yref, Mem$t[yresid], Mem$t[w], wts,
npts, wx, wy, delete)
}
GG_NEWFUNCTION(gfit) = YES
case 'g':
if (GG_PLOTTYPE(gfit) != FIT)
newgraph = YES
GG_PLOTTYPE(gfit) = FIT
case 'x':
if (GG_PLOTTYPE(gfit) != XXRESID)
newgraph = YES
GG_PLOTTYPE(gfit) = XXRESID
case 'r':
if (GG_PLOTTYPE(gfit) != XYRESID)
newgraph = YES
GG_PLOTTYPE(gfit) = XYRESID
case 'y':
if (GG_PLOTTYPE(gfit) != YXRESID)
newgraph = YES
GG_PLOTTYPE(gfit) = YXRESID
case 's':
if (GG_PLOTTYPE(gfit) != YYRESID)
newgraph = YES
GG_PLOTTYPE(gfit) = YYRESID
case 'f':
# do fit
if (GG_NEWFUNCTION(gfit) == YES) {
iferr {
switch (GM_FIT(fit)) {
case GM_ROTATE:
call geo_ftheta$t (fit, sx1, sy1, xref, yref, xin,
yin, Mem$t[w], Mem$t[xresid], Mem$t[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RSCALE:
call geo_fmagnify$t (fit, sx1, sy1, xref, yref, xin,
yin, Mem$t[w], Mem$t[xresid], Mem$t[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RXYSCALE:
call geo_flinear$t (fit, sx1, sy1, xref, yref, xin,
yin, Mem$t[w], Mem$t[xresid], Mem$t[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
default:
call geo_fxy$t (fit, sx1, sx2, xref, yref, xin,
Mem$t[w], Mem$t[xresid], npts, YES,
xerrmsg, maxch)
call geo_fxy$t (fit, sy1, sy2, xref, yref, yin,
Mem$t[w], Mem$t[yresid], npts, NO,
yerrmsg, maxch)
}
if (GM_MAXITER(fit) <= 0 || IS_INDEFD(GM_REJECT(fit)))
GM_NREJECT(fit) = 0
else
call geo_mreject$t (fit, sx1, sy1, sx2, sy2, xref,
yref, xin, yin, Mem$t[w], Mem$t[xresid],
Mem$t[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
GG_NEWFUNCTION(gfit) = NO
GG_FITERROR(gfit) = NO
errcode = OK
} then {
errcode = errget (errstr, SZ_LINE)
call printf ("%s\n")
call pargstr (errstr)
GG_FITERROR(gfit) = YES
}
}
# plot new graph
if (GG_FITERROR(gfit) == YES)
newgraph = NO
else
newgraph = YES
case 'o':
GG_OVERPLOT(gfit) = YES
default:
call printf ("\07")
}
if (newgraph == YES) {
switch (GG_PLOTTYPE(gfit)) {
case FIT:
call geo_label (FIT, gt1, fit)
call geo_1graph$t (gd, gt1, fit, gfit, xref, yref, xin, yin,
Mem$t[w], npts)
if (GG_CONSTXY(gfit) == YES)
call geo_conxy$t (gd, fit, sx1, sy1, sx2, sy2)
case XXRESID:
call geo_label (XXRESID, gt2, fit)
call geo_2graph$t (gd, gt2, fit, gfit, xref, Mem$t[xresid],
Mem$t[w], npts)
case XYRESID:
call geo_label (XYRESID, gt3, fit)
call geo_2graph$t (gd, gt3, fit, gfit, yref, Mem$t[xresid],
Mem$t[w], npts)
case YXRESID:
call geo_label (YXRESID, gt4, fit)
call geo_2graph$t (gd, gt4, fit, gfit, xref, Mem$t[yresid],
Mem$t[w], npts)
case YYRESID:
call geo_label (YYRESID, gt5, fit)
call geo_2graph$t (gd, gt5, fit, gfit, yref, Mem$t[yresid],
Mem$t[w], npts)
}
call printf ("%s %s\n")
call pargstr (xerrmsg)
call pargstr (yerrmsg)
newgraph = NO
}
}
# Free space.
call gt_free (gt1)
call gt_free (gt2)
call gt_free (gt3)
call gt_free (gt4)
call gt_free (gt5)
call sfree (sp)
# Call an error if appropriate.
if (errcode > 0)
call error (2, errstr)
end
# GEO_LCOEFF -- Print the coefficents of the linear portion of the
# fit, xshift, yshift, xexpansion, yexpansion, x and y rotations.
procedure geo_lcoeff$t (sx, sy, xshift, yshift, xscale, yscale, xrot, yrot)
pointer sx #I pointer to the x surface fit
pointer sy #I pointer to the y surface fit
PIXEL xshift #O output x shift
PIXEL yshift #O output y shift
PIXEL xscale #O output x scale
PIXEL yscale #O output y scale
PIXEL xrot #O rotation of point on x axis
PIXEL yrot #O rotation of point on y axis
int nxxcoeff, nxycoeff, nyxcoeff, nyycoeff
pointer sp, xcoeff, ycoeff
PIXEL xxrange, xyrange, xxmaxmin, xymaxmin
PIXEL yxrange, yyrange, yxmaxmin, yymaxmin
PIXEL a, b, c, d
bool fp_equal$t()
$if (datatype == r)
int gsgeti()
real gsgetr()
$else
int dgsgeti()
double dgsgetd()
$endif
begin
# Allocate working space.
call smark (sp)
$if (datatype == r)
call salloc (xcoeff, gsgeti (sx, GSNCOEFF), TY_PIXEL)
call salloc (ycoeff, gsgeti (sy, GSNCOEFF), TY_PIXEL)
$else
call salloc (xcoeff, dgsgeti (sx, GSNCOEFF), TY_PIXEL)
call salloc (ycoeff, dgsgeti (sy, GSNCOEFF), TY_PIXEL)
$endif
# Get coefficients and numbers of coefficients.
$if (datatype == r)
call gscoeff (sx, Mem$t[xcoeff], nxxcoeff)
call gscoeff (sy, Mem$t[ycoeff], nyycoeff)
nxxcoeff = gsgeti (sx, GSNXCOEFF)
nxycoeff = gsgeti (sx, GSNYCOEFF)
nyxcoeff = gsgeti (sy, GSNXCOEFF)
nyycoeff = gsgeti (sy, GSNYCOEFF)
$else
call dgscoeff (sx, Mem$t[xcoeff], nxxcoeff)
call dgscoeff (sy, Mem$t[ycoeff], nyycoeff)
nxxcoeff = dgsgeti (sx, GSNXCOEFF)
nxycoeff = dgsgeti (sx, GSNYCOEFF)
nyxcoeff = dgsgeti (sy, GSNXCOEFF)
nyycoeff = dgsgeti (sy, GSNYCOEFF)
$endif
# Get the data range.
$if (datatype == r)
if (gsgeti (sx, GSTYPE) != GS_POLYNOMIAL) {
xxrange = (gsgetr (sx, GSXMAX) - gsgetr (sx, GSXMIN)) / 2.0
xxmaxmin = - (gsgetr (sx, GSXMAX) + gsgetr (sx, GSXMIN)) / 2.0
xyrange = (gsgetr (sx, GSYMAX) - gsgetr (sx, GSYMIN)) / 2.0
xymaxmin = - (gsgetr (sx, GSYMAX) + gsgetr (sx, GSYMIN)) / 2.0
$else
if (dgsgeti (sx, GSTYPE) != GS_POLYNOMIAL) {
xxrange = (dgsgetd (sx, GSXMAX) - dgsgetd (sx, GSXMIN)) / 2.0d0
xxmaxmin = - (dgsgetd (sx, GSXMAX) + dgsgetd (sx, GSXMIN)) / 2.0d0
xyrange = (dgsgetd (sx, GSYMAX) - dgsgetd (sx, GSYMIN)) / 2.0d0
xymaxmin = - (dgsgetd (sx, GSYMAX) + dgsgetd (sx, GSYMIN)) / 2.0d0
$endif
} else {
xxrange = PIXEL(1.0)
xxmaxmin = PIXEL(0.0)
xyrange = PIXEL(1.0)
xymaxmin = PIXEL(0.0)
}
$if (datatype == r)
if (gsgeti (sy, GSTYPE) != GS_POLYNOMIAL) {
yxrange = (gsgetr (sy, GSXMAX) - gsgetr (sy, GSXMIN)) / 2.0
yxmaxmin = - (gsgetr (sy, GSXMAX) + gsgetr (sy, GSXMIN)) / 2.0
yyrange = (gsgetr (sy, GSYMAX) - gsgetr (sy, GSYMIN)) / 2.0
yymaxmin = - (gsgetr (sy, GSYMAX) + gsgetr (sy, GSYMIN)) / 2.0
$else
if (dgsgeti (sy, GSTYPE) != GS_POLYNOMIAL) {
yxrange = (dgsgetd (sy, GSXMAX) - dgsgetd (sy, GSXMIN)) / 2.0d0
yxmaxmin = - (dgsgetd (sy, GSXMAX) + dgsgetd (sy, GSXMIN)) / 2.0d0
yyrange = (dgsgetd (sy, GSYMAX) - dgsgetd (sy, GSYMIN)) / 2.0d0
yymaxmin = - (dgsgetd (sy, GSYMAX) + dgsgetd (sy, GSYMIN)) / 2.0d0
$endif
} else {
yxrange = PIXEL(1.0)
yxmaxmin = PIXEL(0.0)
yyrange = PIXEL(1.0)
yymaxmin = PIXEL(0.0)
}
# Get the shifts.
xshift = Mem$t[xcoeff] + Mem$t[xcoeff+1] * xxmaxmin / xxrange +
Mem$t[xcoeff+2] * xymaxmin / xyrange
yshift = Mem$t[ycoeff] + Mem$t[ycoeff+1] * yxmaxmin / yxrange +
Mem$t[ycoeff+2] * yymaxmin / yyrange
# Get the rotation and scaling parameters and correct for normalization.
if (nxxcoeff > 1)
a = Mem$t[xcoeff+1] / xxrange
else
a = PIXEL(0.0)
if (nxycoeff > 1)
b = Mem$t[xcoeff+nxxcoeff] / xyrange
else
b = PIXEL(0.0)
if (nyxcoeff > 1)
c = Mem$t[ycoeff+1] / yxrange
else
c = PIXEL(0.0)
if (nyycoeff > 1)
d = Mem$t[ycoeff+nyxcoeff] / yyrange
else
d = PIXEL(0.0)
# Get the magnification factors.
xscale = sqrt (a * a + c * c)
yscale = sqrt (b * b + d * d)
# Get the x and y axes rotation factors.
if (fp_equal$t (a, PIXEL(0.0)) && fp_equal$t (c, PIXEL(0.0)))
xrot = PIXEL(0.0)
else
xrot = RADTODEG (atan2 (-c, a))
if (xrot < PIXEL(0.0))
xrot = xrot + PIXEL(360.0)
if (fp_equal$t (b, PIXEL(0.0)) && fp_equal$t (d, PIXEL(0.0)))
yrot = PIXEL(0.0)
else
yrot = RADTODEG (atan2 (b, d))
if (yrot < PIXEL(0.0))
yrot = yrot + PIXEL(360.0)
call sfree (sp)
end
$endfor
|
