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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"
# GEO_MGFIT -- Fit the surface using interactive graphics.
procedure geo_mgfitr (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
real xref[npts] #I the x reference coordinates
real yref[npts] #I the y reference coordinates
real xin[npts] #I input x coordinates
real yin[npts] #I input y coordinates
real 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
real xshift, yshift, xscale, yscale, thetax, thetay
int clgcur(), errget()
pointer gt_init()
errchk geo_fxyr(), geo_mrejectr(), geo_fthetar()
errchk geo_fmagnifyr(), geo_flinearr()
begin
# Initialize gfit structure and working space.
call smark (sp)
call salloc (gfit, LEN_GEOGRAPH, TY_STRUCT)
call salloc (xresid, npts, TY_REAL)
call salloc (yresid, npts, TY_REAL)
call salloc (w, npts, TY_REAL)
call salloc (cmd, SZ_LINE, TY_CHAR)
# Do initial fit.
iferr {
switch (GM_FIT(fit)) {
case GM_ROTATE:
call geo_fthetar (fit, sx1, sy1, xref, yref, xin, yin, wts,
Memr[xresid], Memr[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RSCALE:
call geo_fmagnifyr (fit, sx1, sy1, xref, yref, xin, yin, wts,
Memr[xresid], Memr[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RXYSCALE:
call geo_flinearr (fit, sx1, sy1, xref, yref, xin, yin, wts,
Memr[xresid], Memr[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
default:
call geo_fxyr (fit, sx1, sx2, xref, yref, xin, wts,
Memr[xresid], npts, YES, xerrmsg, maxch)
call geo_fxyr (fit, sy1, sy2, xref, yref, yin, wts,
Memr[yresid], npts, NO, yerrmsg, maxch)
}
if (GM_MAXITER(fit) <= 0 || IS_INDEFD(GM_REJECT(fit)))
GM_NREJECT(fit) = 0
else
call geo_mrejectr (fit, sx1, sy1, sx2, sy2, xref, yref, xin,
yin, wts, Memr[xresid], Memr[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_1graphr (gd, gt1, fit, gfit, xref, yref, xin, yin, wts,
npts)
if (GG_CONSTXY(gfit) == YES)
call geo_conxyr (gd, fit, sx1, sy1, sx2, sy2)
call printf ("%s %s\n")
call pargstr (xerrmsg)
call pargstr (yerrmsg)
# Read the cursor commands.
call amovr (wts, Memr[w], npts)
while (clgcur ("cursor", wx, wy, wcs, key, Memc[cmd], SZ_LINE) != EOF) {
switch (key) {
case 'q':
call amovr (Memr[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_lcoeffr (sx1, sy1, xshift, yshift, xscale, yscale,
thetax, thetay)
call printf ("xshift: %.2f yshift: %.2f ")
call pargr (xshift)
call pargr (yshift)
call printf ("xmag: %0.3g ymag: %0.3g ")
call pargr (xscale)
call pargr (yscale)
call printf ("xrot: %.2f yrot: %.2f\n")
call pargr (thetax)
call pargr (thetay)
}
case 't':
if (GG_FITERROR(gfit) == NO && GG_PLOTTYPE(gfit) == FIT)
call geo_lxyr (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_1deleter (gd, xin, yin, Memr[w], wts, npts, wx,
wy, delete)
case XXRESID:
call geo_2deleter (gd, xref, Memr[xresid], Memr[w], wts,
npts, wx, wy, delete)
case XYRESID:
call geo_2deleter (gd, yref, Memr[xresid], Memr[w], wts,
npts, wx, wy, delete)
case YXRESID:
call geo_2deleter (gd, xref, Memr[yresid], Memr[w], wts,
npts, wx, wy, delete)
case YYRESID:
call geo_2deleter (gd, yref, Memr[yresid], Memr[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_fthetar (fit, sx1, sy1, xref, yref, xin,
yin, Memr[w], Memr[xresid], Memr[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RSCALE:
call geo_fmagnifyr (fit, sx1, sy1, xref, yref, xin,
yin, Memr[w], Memr[xresid], Memr[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RXYSCALE:
call geo_flinearr (fit, sx1, sy1, xref, yref, xin,
yin, Memr[w], Memr[xresid], Memr[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
default:
call geo_fxyr (fit, sx1, sx2, xref, yref, xin,
Memr[w], Memr[xresid], npts, YES,
xerrmsg, maxch)
call geo_fxyr (fit, sy1, sy2, xref, yref, yin,
Memr[w], Memr[yresid], npts, NO,
yerrmsg, maxch)
}
if (GM_MAXITER(fit) <= 0 || IS_INDEFD(GM_REJECT(fit)))
GM_NREJECT(fit) = 0
else
call geo_mrejectr (fit, sx1, sy1, sx2, sy2, xref,
yref, xin, yin, Memr[w], Memr[xresid],
Memr[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_1graphr (gd, gt1, fit, gfit, xref, yref, xin, yin,
Memr[w], npts)
if (GG_CONSTXY(gfit) == YES)
call geo_conxyr (gd, fit, sx1, sy1, sx2, sy2)
case XXRESID:
call geo_label (XXRESID, gt2, fit)
call geo_2graphr (gd, gt2, fit, gfit, xref, Memr[xresid],
Memr[w], npts)
case XYRESID:
call geo_label (XYRESID, gt3, fit)
call geo_2graphr (gd, gt3, fit, gfit, yref, Memr[xresid],
Memr[w], npts)
case YXRESID:
call geo_label (YXRESID, gt4, fit)
call geo_2graphr (gd, gt4, fit, gfit, xref, Memr[yresid],
Memr[w], npts)
case YYRESID:
call geo_label (YYRESID, gt5, fit)
call geo_2graphr (gd, gt5, fit, gfit, yref, Memr[yresid],
Memr[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_lcoeffr (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
real xshift #O output x shift
real yshift #O output y shift
real xscale #O output x scale
real yscale #O output y scale
real xrot #O rotation of point on x axis
real yrot #O rotation of point on y axis
int nxxcoeff, nxycoeff, nyxcoeff, nyycoeff
pointer sp, xcoeff, ycoeff
real xxrange, xyrange, xxmaxmin, xymaxmin
real yxrange, yyrange, yxmaxmin, yymaxmin
real a, b, c, d
bool fp_equalr()
int gsgeti()
real gsgetr()
begin
# Allocate working space.
call smark (sp)
call salloc (xcoeff, gsgeti (sx, GSNCOEFF), TY_REAL)
call salloc (ycoeff, gsgeti (sy, GSNCOEFF), TY_REAL)
# Get coefficients and numbers of coefficients.
call gscoeff (sx, Memr[xcoeff], nxxcoeff)
call gscoeff (sy, Memr[ycoeff], nyycoeff)
nxxcoeff = gsgeti (sx, GSNXCOEFF)
nxycoeff = gsgeti (sx, GSNYCOEFF)
nyxcoeff = gsgeti (sy, GSNXCOEFF)
nyycoeff = gsgeti (sy, GSNYCOEFF)
# Get the data range.
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 {
xxrange = real(1.0)
xxmaxmin = real(0.0)
xyrange = real(1.0)
xymaxmin = real(0.0)
}
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 {
yxrange = real(1.0)
yxmaxmin = real(0.0)
yyrange = real(1.0)
yymaxmin = real(0.0)
}
# Get the shifts.
xshift = Memr[xcoeff] + Memr[xcoeff+1] * xxmaxmin / xxrange +
Memr[xcoeff+2] * xymaxmin / xyrange
yshift = Memr[ycoeff] + Memr[ycoeff+1] * yxmaxmin / yxrange +
Memr[ycoeff+2] * yymaxmin / yyrange
# Get the rotation and scaling parameters and correct for normalization.
if (nxxcoeff > 1)
a = Memr[xcoeff+1] / xxrange
else
a = real(0.0)
if (nxycoeff > 1)
b = Memr[xcoeff+nxxcoeff] / xyrange
else
b = real(0.0)
if (nyxcoeff > 1)
c = Memr[ycoeff+1] / yxrange
else
c = real(0.0)
if (nyycoeff > 1)
d = Memr[ycoeff+nyxcoeff] / yyrange
else
d = real(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_equalr (a, real(0.0)) && fp_equalr (c, real(0.0)))
xrot = real(0.0)
else
xrot = RADTODEG (atan2 (-c, a))
if (xrot < real(0.0))
xrot = xrot + real(360.0)
if (fp_equalr (b, real(0.0)) && fp_equalr (d, real(0.0)))
yrot = real(0.0)
else
yrot = RADTODEG (atan2 (b, d))
if (yrot < real(0.0))
yrot = yrot + real(360.0)
call sfree (sp)
end
# GEO_MGFIT -- Fit the surface using interactive graphics.
procedure geo_mgfitd (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
double xref[npts] #I the x reference coordinates
double yref[npts] #I the y reference coordinates
double xin[npts] #I input x coordinates
double yin[npts] #I input y coordinates
double 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
double xshift, yshift, xscale, yscale, thetax, thetay
int clgcur(), errget()
pointer gt_init()
errchk geo_fxyd(), geo_mrejectd(), geo_fthetad()
errchk geo_fmagnifyd(), geo_flineard()
begin
# Initialize gfit structure and working space.
call smark (sp)
call salloc (gfit, LEN_GEOGRAPH, TY_STRUCT)
call salloc (xresid, npts, TY_DOUBLE)
call salloc (yresid, npts, TY_DOUBLE)
call salloc (w, npts, TY_DOUBLE)
call salloc (cmd, SZ_LINE, TY_CHAR)
# Do initial fit.
iferr {
switch (GM_FIT(fit)) {
case GM_ROTATE:
call geo_fthetad (fit, sx1, sy1, xref, yref, xin, yin, wts,
Memd[xresid], Memd[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RSCALE:
call geo_fmagnifyd (fit, sx1, sy1, xref, yref, xin, yin, wts,
Memd[xresid], Memd[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RXYSCALE:
call geo_flineard (fit, sx1, sy1, xref, yref, xin, yin, wts,
Memd[xresid], Memd[yresid], npts, xerrmsg, maxch,
yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
default:
call geo_fxyd (fit, sx1, sx2, xref, yref, xin, wts,
Memd[xresid], npts, YES, xerrmsg, maxch)
call geo_fxyd (fit, sy1, sy2, xref, yref, yin, wts,
Memd[yresid], npts, NO, yerrmsg, maxch)
}
if (GM_MAXITER(fit) <= 0 || IS_INDEFD(GM_REJECT(fit)))
GM_NREJECT(fit) = 0
else
call geo_mrejectd (fit, sx1, sy1, sx2, sy2, xref, yref, xin,
yin, wts, Memd[xresid], Memd[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_1graphd (gd, gt1, fit, gfit, xref, yref, xin, yin, wts,
npts)
if (GG_CONSTXY(gfit) == YES)
call geo_conxyd (gd, fit, sx1, sy1, sx2, sy2)
call printf ("%s %s\n")
call pargstr (xerrmsg)
call pargstr (yerrmsg)
# Read the cursor commands.
call amovd (wts, Memd[w], npts)
while (clgcur ("cursor", wx, wy, wcs, key, Memc[cmd], SZ_LINE) != EOF) {
switch (key) {
case 'q':
call amovd (Memd[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_lcoeffd (sx1, sy1, xshift, yshift, xscale, yscale,
thetax, thetay)
call printf ("xshift: %.2f yshift: %.2f ")
call pargd (xshift)
call pargd (yshift)
call printf ("xmag: %0.3g ymag: %0.3g ")
call pargd (xscale)
call pargd (yscale)
call printf ("xrot: %.2f yrot: %.2f\n")
call pargd (thetax)
call pargd (thetay)
}
case 't':
if (GG_FITERROR(gfit) == NO && GG_PLOTTYPE(gfit) == FIT)
call geo_lxyd (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_1deleted (gd, xin, yin, Memd[w], wts, npts, wx,
wy, delete)
case XXRESID:
call geo_2deleted (gd, xref, Memd[xresid], Memd[w], wts,
npts, wx, wy, delete)
case XYRESID:
call geo_2deleted (gd, yref, Memd[xresid], Memd[w], wts,
npts, wx, wy, delete)
case YXRESID:
call geo_2deleted (gd, xref, Memd[yresid], Memd[w], wts,
npts, wx, wy, delete)
case YYRESID:
call geo_2deleted (gd, yref, Memd[yresid], Memd[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_fthetad (fit, sx1, sy1, xref, yref, xin,
yin, Memd[w], Memd[xresid], Memd[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RSCALE:
call geo_fmagnifyd (fit, sx1, sy1, xref, yref, xin,
yin, Memd[w], Memd[xresid], Memd[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
case GM_RXYSCALE:
call geo_flineard (fit, sx1, sy1, xref, yref, xin,
yin, Memd[w], Memd[xresid], Memd[yresid],
npts, xerrmsg, maxch, yerrmsg, maxch)
sx2 = NULL
sy2 = NULL
default:
call geo_fxyd (fit, sx1, sx2, xref, yref, xin,
Memd[w], Memd[xresid], npts, YES,
xerrmsg, maxch)
call geo_fxyd (fit, sy1, sy2, xref, yref, yin,
Memd[w], Memd[yresid], npts, NO,
yerrmsg, maxch)
}
if (GM_MAXITER(fit) <= 0 || IS_INDEFD(GM_REJECT(fit)))
GM_NREJECT(fit) = 0
else
call geo_mrejectd (fit, sx1, sy1, sx2, sy2, xref,
yref, xin, yin, Memd[w], Memd[xresid],
Memd[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_1graphd (gd, gt1, fit, gfit, xref, yref, xin, yin,
Memd[w], npts)
if (GG_CONSTXY(gfit) == YES)
call geo_conxyd (gd, fit, sx1, sy1, sx2, sy2)
case XXRESID:
call geo_label (XXRESID, gt2, fit)
call geo_2graphd (gd, gt2, fit, gfit, xref, Memd[xresid],
Memd[w], npts)
case XYRESID:
call geo_label (XYRESID, gt3, fit)
call geo_2graphd (gd, gt3, fit, gfit, yref, Memd[xresid],
Memd[w], npts)
case YXRESID:
call geo_label (YXRESID, gt4, fit)
call geo_2graphd (gd, gt4, fit, gfit, xref, Memd[yresid],
Memd[w], npts)
case YYRESID:
call geo_label (YYRESID, gt5, fit)
call geo_2graphd (gd, gt5, fit, gfit, yref, Memd[yresid],
Memd[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_lcoeffd (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
double xshift #O output x shift
double yshift #O output y shift
double xscale #O output x scale
double yscale #O output y scale
double xrot #O rotation of point on x axis
double yrot #O rotation of point on y axis
int nxxcoeff, nxycoeff, nyxcoeff, nyycoeff
pointer sp, xcoeff, ycoeff
double xxrange, xyrange, xxmaxmin, xymaxmin
double yxrange, yyrange, yxmaxmin, yymaxmin
double a, b, c, d
bool fp_equald()
int dgsgeti()
double dgsgetd()
begin
# Allocate working space.
call smark (sp)
call salloc (xcoeff, dgsgeti (sx, GSNCOEFF), TY_DOUBLE)
call salloc (ycoeff, dgsgeti (sy, GSNCOEFF), TY_DOUBLE)
# Get coefficients and numbers of coefficients.
call dgscoeff (sx, Memd[xcoeff], nxxcoeff)
call dgscoeff (sy, Memd[ycoeff], nyycoeff)
nxxcoeff = dgsgeti (sx, GSNXCOEFF)
nxycoeff = dgsgeti (sx, GSNYCOEFF)
nyxcoeff = dgsgeti (sy, GSNXCOEFF)
nyycoeff = dgsgeti (sy, GSNYCOEFF)
# Get the data range.
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
} else {
xxrange = double(1.0)
xxmaxmin = double(0.0)
xyrange = double(1.0)
xymaxmin = double(0.0)
}
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
} else {
yxrange = double(1.0)
yxmaxmin = double(0.0)
yyrange = double(1.0)
yymaxmin = double(0.0)
}
# Get the shifts.
xshift = Memd[xcoeff] + Memd[xcoeff+1] * xxmaxmin / xxrange +
Memd[xcoeff+2] * xymaxmin / xyrange
yshift = Memd[ycoeff] + Memd[ycoeff+1] * yxmaxmin / yxrange +
Memd[ycoeff+2] * yymaxmin / yyrange
# Get the rotation and scaling parameters and correct for normalization.
if (nxxcoeff > 1)
a = Memd[xcoeff+1] / xxrange
else
a = double(0.0)
if (nxycoeff > 1)
b = Memd[xcoeff+nxxcoeff] / xyrange
else
b = double(0.0)
if (nyxcoeff > 1)
c = Memd[ycoeff+1] / yxrange
else
c = double(0.0)
if (nyycoeff > 1)
d = Memd[ycoeff+nyxcoeff] / yyrange
else
d = double(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_equald (a, double(0.0)) && fp_equald (c, double(0.0)))
xrot = double(0.0)
else
xrot = RADTODEG (atan2 (-c, a))
if (xrot < double(0.0))
xrot = xrot + double(360.0)
if (fp_equald (b, double(0.0)) && fp_equald (d, double(0.0)))
yrot = double(0.0)
else
yrot = RADTODEG (atan2 (b, d))
if (yrot < double(0.0))
yrot = yrot + double(360.0)
call sfree (sp)
end
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