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|
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <pkg/gtools.h>
include "names.h"
include "icfit.h"
# ICG_FIT -- Interactive curve fitting with graphics. This is the main
# entry point for the interactive graphics part of the icfit package.
procedure icg_fitr (ic, gp, cursor, gt, cv, x, y, wts, npts)
pointer ic # ICFIT pointer
pointer gp # GIO pointer
char cursor[ARB] # GIO cursor input
pointer gt # GTOOLS pointer
pointer cv # CURFIT pointer
real x[npts] # Ordinates
real y[npts] # Abscissas
real wts[npts] # Weights
int npts # Number of points
real wx, wy
int wcs, key
int i, j, newgraph, axes[2], xtype
real px1
real rx1, rx2, ry1, ry2
pointer sp, cmd, userwts, x1, y1, w1, n
int gt_gcur1(), stridxs(), scan(), nscan()
int icg_nearestr()
real rcveval()
errchk ic_fitr()
begin
call smark (sp)
call salloc (cmd, IC_SZSAMPLE, TY_CHAR)
# Allocate memory for the fit and a copy of the weights.
# The weights are copied because they are changed when points are
# deleted.
n = npts
x1 = NULL
y1 = NULL
w1 = NULL
call malloc (userwts, n, TY_REAL)
call amovr (wts, Memr[userwts], n)
# Initialize
IC_GP(ic) = gp
IC_GT(ic) = gt
IC_OVERPLOT(ic) = NO
IC_NEWX(ic) = YES
IC_NEWY(ic) = YES
IC_NEWWTS(ic) = YES
IC_NEWFUNCTION(ic) = YES
# Send the GUI the current task values.
call ic_gui (ic, "open")
call ic_gui (ic, "graph")
# Read cursor commands.
key = 'f'
newgraph = YES
axes[1] = IC_AXES(ic, IC_GKEY(ic), 1)
axes[2] = IC_AXES(ic, IC_GKEY(ic), 2)
xtype = 0
repeat {
switch (key) {
case '?': # Print help text.
call ic_gui (ic, "help")
case ':': # List or set parameters
if (Memc[cmd] == '/')
call gt_colon (Memc[cmd], gp, gt, newgraph)
else
call icg_colonr (ic, Memc[cmd], newgraph, gp, gt, cv,
x, y, wts, n)
case 'a': # Add points
if ((IC_AXES(ic,IC_GKEY(ic),1) == 'x') &&
(IC_AXES(ic,IC_GKEY(ic),2) == 'y'))
;
else if ((IC_AXES(ic,IC_GKEY(ic),1) == 'y') &&
(IC_AXES(ic,IC_GKEY(ic),2) == 'x')) {
rx1 = wx
wx = wy
wy = rx1
} else {
call printf ("Graph must be x vs. y or y vs. x\07\n")
next
}
rx1 = 1.
call printf ("weight = (%g) ")
call pargr (rx1)
call flush (STDOUT)
if (scan() != EOF) {
call gargr (rx2)
if (nscan() == 1)
if (!IS_INDEFR (rx2))
rx1 = rx2
}
if (x1 == NULL) {
call malloc (x1, n+1, TY_REAL)
call malloc (y1, n+1, TY_REAL)
call malloc (w1, n+1, TY_REAL)
call amovr (x, Memr[x1], n)
call amovr (y, Memr[y1], n)
call amovr (wts, Memr[w1], n)
} else {
call realloc (x1, n+1, TY_REAL)
call realloc (y1, n+1, TY_REAL)
call realloc (w1, n+1, TY_REAL)
}
call realloc (userwts, n+1, TY_REAL)
call icg_addr (gp, wx, wy, rx1, Memr[x1], Memr[y1],
Memr[w1], Memr[userwts], n)
IC_NEWX(ic) = YES
IC_NEWY(ic) = YES
IC_NEWWTS(ic) = YES
case 'c': # Print the positions of data points.
if (x1 == NULL) {
i = icg_nearestr (ic, gp, gt, cv, x, y, n, wx, wy)
if (i != 0) {
call printf ("x = %g y = %g fit = %g\n")
call pargr (x[i])
call pargr (y[i])
call pargr (rcveval (cv, x[i]))
}
} else {
i = icg_nearestr (ic, gp, gt, cv, Memr[x1], Memr[y1],
n, wx, wy)
if (i != 0) {
call printf ("x = %g y = %g fit = %g\n")
call pargr (Memr[x1+i-1])
call pargr (Memr[y1+i-1])
call pargr (rcveval (cv, Memr[x1+i-1]))
}
}
case 'd': # Delete data points.
if (x1 == NULL)
call icg_deleter (ic, gp, gt, cv, x, y, wts,
Memr[userwts], n, wx, wy)
else
call icg_deleter (ic, gp, gt, cv, Memr[x1], Memr[y1],
Memr[w1], Memr[userwts], n, wx, wy)
call ic_gui (ic, "refit YES")
case 'f': # Fit the function and reset the flags.
iferr {
if (x1 == NULL)
call ic_fitr (ic, cv, x, y, wts, n, IC_NEWX(ic),
IC_NEWY(ic), IC_NEWWTS(ic), IC_NEWFUNCTION(ic))
else
call ic_fitr (ic, cv, Memr[x1], Memr[y1], Memr[w1],
n, IC_NEWX(ic), IC_NEWY(ic), IC_NEWWTS(ic),
IC_NEWFUNCTION(ic))
IC_NEWX(ic) = NO
IC_NEWY(ic) = NO
IC_NEWWTS(ic) = NO
IC_NEWFUNCTION(ic) = NO
IC_FITERROR(ic) = NO
newgraph = YES
call ic_gui (ic, "refit NO")
} then {
IC_FITERROR(ic) = YES
call erract (EA_WARN)
}
case 'g': # Set graph axes types.
call printf ("Graph key to be defined: ")
call flush (STDOUT)
if (scan() == EOF)
goto 10
call gargc (Memc[cmd])
switch (Memc[cmd]) {
case '\n':
case 'h', 'i', 'j', 'k', 'l':
switch (Memc[cmd]) {
case 'h':
key = 1
case 'i':
key = 2
case 'j':
key = 3
case 'k':
key = 4
case 'l':
key = 5
}
call printf ("Set graph axes types (%c, %c): ")
call pargi (IC_AXES(ic, key, 1))
call pargi (IC_AXES(ic, key, 2))
call flush (STDOUT)
if (scan() == EOF)
goto 10
call gargc (Memc[cmd])
switch (Memc[cmd]) {
case '\n':
default:
call gargc (Memc[cmd+1])
call gargc (Memc[cmd+1])
if (Memc[cmd+1] != '\n') {
IC_AXES(ic, key, 1) = Memc[cmd]
IC_AXES(ic, key, 2) = Memc[cmd+1]
if (IC_GKEY(ic) == key)
newgraph = YES
}
}
default:
call printf ("Not a graph key\n")
}
case 'h':
if (IC_GKEY(ic) != 1) {
IC_GKEY(ic) = 1
newgraph = YES
call ic_gui (ic, "graph")
}
case 'i':
if (IC_GKEY(ic) != 2) {
IC_GKEY(ic) = 2
newgraph = YES
call ic_gui (ic, "graph")
}
case 'j':
if (IC_GKEY(ic) != 3) {
IC_GKEY(ic) = 3
newgraph = YES
call ic_gui (ic, "graph")
}
case 'k':
if (IC_GKEY(ic) != 4) {
IC_GKEY(ic) = 4
newgraph = YES
call ic_gui (ic, "graph")
}
case 'l':
if (IC_GKEY(ic) != 5) {
IC_GKEY(ic) = 5
newgraph = YES
call ic_gui (ic, "graph")
}
case 't': # Initialize the sample string and erase from the graph.
if (x1 == NULL)
call icg_sampler (ic, gp, gt, x, n, 0)
else
call icg_sampler (ic, gp, gt, Memr[x1], n, 0)
call ic_pstr (ic, "sample", "*")
IC_NEWX(ic) = YES
case 'o': # Set overplot flag
IC_OVERPLOT(ic) = YES
case 'r': # Redraw the graph
newgraph = YES
case 's': # Set sample regions with the cursor.
if ((IC_AXES(ic,IC_GKEY(ic),1) == 'x') ||
(IC_AXES(ic,IC_GKEY(ic),2) == 'x')) {
if (stridxs ("*", Memc[IC_SAMPLE(ic)]) > 0)
Memc[IC_SAMPLE(ic)] = EOS
rx1 = wx
ry1 = wy
call printf ("again:\n")
if (gt_gcur1(gt, cursor, wx, wy, wcs, key, Memc[cmd],
IC_SZSAMPLE) == EOF)
break
call printf ("\n")
rx2 = wx
ry2 = wy
# Determine if the x vector is integer.
if (xtype == 0) {
xtype = TY_INT
if (x1 == NULL) {
do i = 1, n
if (x[i] != int (x[i])) {
xtype = TY_REAL
break
}
} else {
do i = 1, n
if (Memr[x1+i-1] != int (Memr[x1+i-1])) {
xtype = TY_REAL
break
}
}
}
if (IC_AXES(ic,IC_GKEY(ic),1) == 'x') {
if (xtype == TY_INT) {
call sprintf (Memc[cmd], IC_SZSAMPLE, " %d:%d")
call pargi (nint (rx1))
call pargi (nint (rx2))
} else {
call sprintf (Memc[cmd], IC_SZSAMPLE, " %g:%g")
call pargr (rx1)
call pargr (rx2)
}
} else {
if (xtype == TY_INT) {
call sprintf (Memc[cmd], IC_SZSAMPLE, " %d:%d")
call pargi (nint (ry1))
call pargi (nint (ry2))
} else {
call sprintf (Memc[cmd], IC_SZSAMPLE, " %g:%g")
call pargr (ry1)
call pargr (ry2)
}
}
call strcat (Memc[cmd], Memc[IC_SAMPLE(ic)], IC_SZSAMPLE)
if (x1 == NULL)
call icg_sampler (ic, gp, gt, x, n, 1)
else
call icg_sampler (ic, gp, gt, Memr[x1], n, 1)
call ic_pstr (ic, "sample", Memc[IC_SAMPLE(ic)])
IC_NEWX(ic) = YES
}
case 'u': # Undelete data points.
if (x1 == NULL)
call icg_undeleter (ic, gp, gt, cv, x, y, wts,
Memr[userwts], n, wx, wy)
else
call icg_undeleter (ic, gp, gt, cv, Memr[x1], Memr[y1],
Memr[w1], Memr[userwts], n, wx, wy)
call ic_gui (ic, "refit YES")
case 'w': # Window graph
call gt_window (gt, gp, cursor, newgraph)
case 'v': # Reset the value of the weight.
if (x1 == NULL) {
i = icg_nearestr (ic, gp, gt, cv, x, y, n, wx, wy)
if (i != 0) {
call printf ("weight = (%g) ")
call pargr (wts[i])
call flush (STDOUT)
if (scan() != EOF) {
call gargr (px1)
if (nscan() == 1) {
if (!IS_INDEF (px1)) {
wts[i] = px1
call ic_gui (ic, "refit YES")
IC_NEWWTS(ic) = YES
}
}
}
}
} else {
i = icg_nearestr (ic, gp, gt, cv, Memr[x1], Memr[y1], n,
wx, wy)
if (i != 0) {
call printf ("weight = (%g) ")
call pargr (Memr[w1+i-1])
call flush (STDOUT)
if (scan() != EOF) {
call gargr (px1)
if (nscan() == 1) {
if (!IS_INDEF (px1)) {
j = icg_nearestr (ic, gp, gt, cv, x, y, n,
wx, wy)
if (j != 0)
if (x[j] == Memr[x1+i-1] &&
y[j] == Memr[y1+i-1])
wts[j] = px1
Memr[w1+i-1] = px1
call ic_gui (ic, "refit YES")
IC_NEWWTS(ic) = YES
}
}
}
}
}
case 'x': # Reset the value of the x point.
if (x1 == NULL) {
i = icg_nearestr (ic, gp, gt, cv, x, y, n, wx, wy)
if (i != 0) {
call printf ("x = (%g) ")
call pargr (x[i])
call flush (STDOUT)
if (scan() != EOF) {
call gargr (px1)
if (nscan() == 1) {
if (!IS_INDEF (px1)) {
x[i] = px1
call ic_gui (ic, "refit YES")
IC_NEWX(ic) = YES
}
}
}
}
} else {
i = icg_nearestr (ic, gp, gt, cv, Memr[x1], Memr[y1], n,
wx, wy)
if (i != 0) {
call printf ("x = (%g) ")
call pargr (Memr[x1+i-1])
call flush (STDOUT)
if (scan() != EOF) {
call gargr (px1)
if (nscan() == 1) {
if (!IS_INDEF (px1)) {
j = icg_nearestr (ic, gp, gt, cv, x, y, n,
wx, wy)
if (j != 0)
if (x[j] == Memr[x1+i-1] &&
y[j] == Memr[y1+i-1])
x[j] = px1
Memr[x1+i-1] = px1
call ic_gui (ic, "refit YES")
IC_NEWX(ic) = YES
}
}
}
}
}
case 'y': # Reset the value of the y point.
if (x1 == NULL) {
i = icg_nearestr (ic, gp, gt, cv, x, y, n, wx, wy)
if (i != 0) {
call printf ("y = (%g) ")
call pargr (y[i])
call flush (STDOUT)
if (scan() != EOF) {
call gargr (px1)
if (nscan() == 1) {
if (!IS_INDEF (px1)) {
y[i] = px1
call ic_gui (ic, "refit YES")
IC_NEWY(ic) = YES
}
}
}
}
} else {
i = icg_nearestr (ic, gp, gt, cv, Memr[x1], Memr[y1], n,
wx, wy)
if (i != 0) {
call printf ("y = (%g) ")
call pargr (Memr[y1+i-1])
call flush (STDOUT)
if (scan() != EOF) {
call gargr (px1)
if (nscan() == 1) {
if (!IS_INDEF (px1)) {
j = icg_nearestr (ic, gp, gt, cv, x, y, n,
wx, wy)
if (j != 0)
if (x[j] == Memr[x1+i-1] &&
y[j] == Memr[y1+i-1])
y[j] = px1
Memr[y1+i-1] = px1
call ic_gui (ic, "refit YES")
IC_NEWY(ic) = YES
}
}
}
}
}
case 'z': # Delete sample region
if (x1 == NULL)
call icg_dsampler (wx, wy, ic, gp, gt, x, n)
else
call icg_dsampler (wx, wy, ic, gp, gt, Memr[x1], n)
call ic_pstr (ic, "sample", Memc[IC_SAMPLE(ic)])
case 'I': # Interrupt
call fatal (0, "Interrupt")
default: # Let the user decide on any other keys.
call icg_user (ic, gp, gt, cv, wx, wy, wcs, key, Memc[cmd])
}
# Redraw the graph if necessary.
10 if (newgraph == YES) {
if (IC_AXES(ic, IC_GKEY(ic), 1) != axes[1]) {
axes[1] = IC_AXES(ic, IC_GKEY(ic), 1)
call gt_setr (gt, GTXMIN, INDEFR)
call gt_setr (gt, GTXMAX, INDEFR)
}
if (IC_AXES(ic, IC_GKEY(ic), 2) != axes[2]) {
axes[2] = IC_AXES(ic, IC_GKEY(ic), 2)
call gt_setr (gt, GTYMIN, INDEFR)
call gt_setr (gt, GTYMAX, INDEFR)
}
if (x1 == NULL)
call icg_graphr (ic, gp, gt, cv, x, y, wts, n)
else
call icg_graphr (ic, gp, gt, cv, Memr[x1], Memr[y1],
Memr[w1], n)
newgraph = NO
}
if (cursor[1] == EOS)
break
} until (gt_gcur1 (gt, cursor, wx, wy, wcs, key, Memc[cmd],
IC_SZSAMPLE) == EOF)
call ic_gui (ic, "close")
IC_GP(ic) = NULL
if (x1 != NULL) {
call mfree (x1, TY_REAL)
call mfree (y1, TY_REAL)
call mfree (w1, TY_REAL)
if (IC_WTSFIT(ic) == NULL)
IC_NFIT(ic) = npts
}
call mfree (userwts, TY_REAL)
call sfree (sp)
end
|
