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
|
include <math/curfit.h>
include "hdicfit.h"
# IC_FIT -- Fit a function. This is the main fitting task. It uses
# flags to define changes since the last fit. This allows the most
# efficient use of the curfit and ranges packages.
procedure ic_fitd (ic, cv, x, y, wts, npts, newx, newy, newwts, newfunction)
pointer ic # ICFIT pointer
pointer cv # Curfit pointer
double x[npts] # Ordinates
double y[npts] # Data to be fit
double wts[npts] # Weights
int npts # Number of points
int newx # New x points?
int newy # New y points?
int newwts # New weights?
int newfunction # New function?
int ier, refit
errchk ic_dosetupd
begin
# Setup the new parameters.
call ic_dosetupd (ic, cv, x, wts, npts, newx, newwts, newfunction,
refit)
if (npts == IC_NFIT(ic)) {
# If not sampling use the data array directly.
if (refit == NO) {
call dcvfit (cv, x, y, wts, npts, WTS_USER, ier)
} else if (newy == YES)
call dcvrefit (cv, x, y, wts, ier)
} else {
# If sampling first form the sample y values.
if ((newx == YES) || (newy == YES) || (newwts == YES))
call rg_wtbind (IC_RG(ic), IC_NAVERAGE(ic), y, wts, npts,
Memd[IC_YFIT(ic)], Memd[IC_WTSFIT(ic)], IC_NFIT(ic))
if (refit == NO) {
call dcvfit (cv, Memd[IC_XFIT(ic)], Memd[IC_YFIT(ic)],
Memd[IC_WTSFIT(ic)], IC_NFIT(ic), WTS_USER, ier)
} else if (newy == YES)
call dcvrefit (cv, Memd[IC_XFIT(ic)], Memd[IC_YFIT(ic)],
Memd[IC_WTSFIT(ic)], ier)
}
# Check for an error in the fit.
switch (ier) {
case SINGULAR:
call printf ("Singular solution")
call flush (STDOUT)
case NO_DEG_FREEDOM:
call printf ("No degrees of freedom")
call flush (STDOUT)
return
}
refit = YES
# Do pixel rejection if desired.
if ((IC_LOW(ic) > 0.) || (IC_HIGH(ic) > 0.)) {
if (npts == IC_NFIT(ic)) {
call ic_rejectd (cv, x, y, wts, Memi[IC_REJPTS(ic)],
IC_NFIT(ic), IC_LOW(ic), IC_HIGH(ic), IC_NITERATE(ic),
IC_GROW(ic), IC_NREJECT(ic))
} else {
call ic_rejectd (cv, Memd[IC_XFIT(ic)], Memd[IC_YFIT(ic)],
Memd[IC_WTSFIT(ic)], Memi[IC_REJPTS(ic)], IC_NFIT(ic),
IC_LOW(ic), IC_HIGH(ic), IC_NITERATE(ic), IC_GROW(ic),
IC_NREJECT(ic))
}
if (IC_NREJECT(ic) > 0)
refit = NO
} else
IC_NREJECT(ic) = 0
end
|
