1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
include <error.h>
include <mach.h>
include <pkg/gtools.h>
include <math/nlfit.h>
include <pkg/inlfit.h>
# IN_GFIT -- Fit a function using non-linear least squares. The function
# can have an arbitrary number of independent variables. This is the main
# entry point for the interactive part of the INLFIT package.
procedure ing_fitr (in, gp, cursor, gt, nl, x, y, wts, names, npts, nvars,
len_name, wtflag, stat)
pointer in # INLFIT pointer
pointer gp # GIO pointer
char cursor[ARB] # GIO cursor input
pointer gt # GTOOLS pointer
pointer nl # NLFIT pointer
real x[ARB] # independent variables (npts * nvars)
real y[ARB] # dependent variables
real wts[ARB] # weigths
char names[ARB] # star ids
int npts # number of points
int nvars # number of variables
int len_name # length of an object name
int wtflag # type of weighting
int stat # Error code (output)
int i, wcs, key, gkey, newgraph
int xtype, xvar, ytype, yvar, xt, xv, yt, yv
real fit
pointer sp, cmd, oldwts, help, prompt
real wx, wy
int gt_gcur1(), ing_nearestr(), in_geti()
real nlevalr()
begin
# Allocate string space.
call smark (sp)
call salloc (cmd, SZ_LINE, TY_CHAR)
# Allocate and initialize a copy of the weights. A new copy
# of the weights is used because it is necessary to have the
# original values to restore them back when the user deletes
# and undeletes points.
call salloc (oldwts, npts, TY_REAL)
call amovr (wts, Memr[oldwts], npts)
# Allocate space for help page and prompt, and get them.
call salloc (help, SZ_LINE, TY_CHAR)
call salloc (prompt, SZ_LINE, TY_CHAR)
call in_gstr (in, INLHELP, Memc[help], SZ_LINE)
call in_gstr (in, INLPROMPT, Memc[prompt], SZ_LINE)
# Initialize INLFIT flags.
call in_puti (in, INLOVERPLOT, NO)
# Initialize loop control variables. The first action
# is to fit the data, in order to have all the fit
# parameters set.
key = 'f'
newgraph = YES
# Get initial setup for axes.
gkey = in_geti (in, INLGKEY)
call in_gkey (in, gkey, INLXAXIS, xtype, xvar)
call in_gkey (in, gkey, INLYAXIS, xtype, xvar)
# Loop reading cursor commands.
repeat {
switch (key) {
case '?': # Print help text.
call gpagefile (gp, Memc[help], Memc[prompt])
case ':': # List or set parameters.
if (Memc[cmd] == '/')
call gt_colon (Memc[cmd], gp, gt, newgraph)
else
call ing_colonr (in, Memc[cmd], gp, gt, nl, x, y, wts,
names, npts, nvars, len_name, newgraph)
case 'c': # Print the positions and useful info on data points.
i = ing_nearestr (in, gp, gt, nl, x, y, npts, nvars, wx, wy)
if (i != 0) {
fit = nlevalr (nl, x[(i-1)*nvars+1], nvars)
call printf (
"%d %s x=%g y=%g func=%g fit=%g, resid=%g\n")
call pargi (i)
call pargstr (names[(i-1)*len_name+1])
call pargr (wx)
call pargr (wy)
call pargr (y[i])
call pargr (fit)
call pargr (y[i] - fit)
}
case 'd': # Delete data points.
call ing_deleter (in, gp, gt, nl, x, y, wts, npts, nvars,
wx, wy)
case 'f': # Fit the function.
# Fit.
do i = 1, npts {
if (wts[i] > real(0.0))
wts[i] = Memr[oldwts+i-1]
}
call in_fitr (in, nl, x, y, wts, npts, nvars, wtflag, stat)
newgraph = YES
case 'g': # Set graph axistype types.
call ing_defkey (in, nvars, newgraph)
case 'h':
if (in_geti (in, INLGKEY) != 1) {
call in_puti (in, INLGKEY, 1)
newgraph = YES
}
case 'i':
if (in_geti (in, INLGKEY) != 2) {
call in_puti (in, INLGKEY, 2)
newgraph = YES
}
case 'j':
if (in_geti (in, INLGKEY) != 3) {
call in_puti (in, INLGKEY, 3)
newgraph = YES
}
case 'k':
if (in_geti (in, INLGKEY) != 4) {
call in_puti (in, INLGKEY, 4)
newgraph = YES
}
case 'l':
if (in_geti (in, INLGKEY) != 5) {
call in_puti (in, INLGKEY, 5)
newgraph = YES
}
case 'o': # Set the overplot flag.
call in_puti (in, INLOVERPLOT, YES)
case 'r': # Redraw the graph.
newgraph = YES
case 't': # Toggle overplot fit flag.
if (in_geti (in, INLPLOTFIT) == YES)
call in_puti (in, INLPLOTFIT, NO)
else
call in_puti (in, INLPLOTFIT, YES)
newgraph = YES
case 'u': # Undelete data points.
call ing_undeleter (in, gp, gt, nl, x, y, wts, Memr[oldwts],
npts, nvars, wx, wy)
case 'w': # Window graph.
call gt_window (gt, gp, cursor, newgraph)
case 'I': # Interrupt.
call fatal (0, "Interrupt")
default: # Let the user decide on any other keys.
call ing_ufit (in, gp, gt, nl, wx, wy, wcs, key, Memc[cmd])
}
# Redraw the graph if necessary.
if (newgraph == YES) {
gkey = in_geti (in, INLGKEY)
call in_gkey (in, gkey, INLXAXIS, xt, xv)
if (xt != xtype || xv != xvar) {
call in_gkey (in, gkey, INLXAXIS, xtype, xvar)
call gt_setr (gt, GTXMIN, INDEFR)
call gt_setr (gt, GTXMAX, INDEFR)
}
call in_gkey (in, gkey, INLYAXIS, yt, yv)
if (xt != xtype || xv != xvar) {
call in_gkey (in, gkey, INLYAXIS, ytype, yvar)
call gt_setr (gt, GTYMIN, INDEFR)
call gt_setr (gt, GTYMAX, INDEFR)
}
call ing_graphr (in, gp, gt, nl, x, y, wts, npts, nvars)
newgraph = NO
}
if (cursor[1] == EOS)
break
} until (gt_gcur1 (gt, cursor, wx, wy, wcs, key, Memc[cmd],
SZ_LINE) == EOF)
# Free memory.
call sfree (sp)
end
|
