aboutsummaryrefslogtreecommitdiff
path: root/pkg/xtools/icfit/icfvshowd.x
diff options
context:
space:
mode:
authorJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
committerJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
commitfa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch)
treebdda434976bc09c864f2e4fa6f16ba1952b1e555 /pkg/xtools/icfit/icfvshowd.x
downloadiraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz
Initial commit
Diffstat (limited to 'pkg/xtools/icfit/icfvshowd.x')
-rw-r--r--pkg/xtools/icfit/icfvshowd.x164
1 files changed, 164 insertions, 0 deletions
diff --git a/pkg/xtools/icfit/icfvshowd.x b/pkg/xtools/icfit/icfvshowd.x
new file mode 100644
index 00000000..a26e0530
--- /dev/null
+++ b/pkg/xtools/icfit/icfvshowd.x
@@ -0,0 +1,164 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <math/curfit.h>
+include "icfit.h"
+include "names.h"
+
+# IC_FVSHOW -- Show fit parameters in verbose mode.
+
+procedure ic_fvshowd (ic, cv, x, y, wts, npts, fd)
+
+pointer ic # ICFIT pointer
+pointer cv # Curfit pointer
+double x[ARB] # Ordinates
+double y[ARB] # Abscissas
+double wts[ARB] # Weights
+int npts # Number of data points
+int fd # Output descriptor
+
+int i, n, deleted, ncoeffs
+double chisqr, rms
+pointer sp, fit, wts1, coeffs, errors
+
+int dcvstati()
+double ic_rmsd()
+
+begin
+ # Do the standard ic_show option, then add on the verbose part.
+ call ic_fshow (ic, fd)
+
+ if (npts == 0) {
+ call eprintf ("# Incomplete output - no data points for fit\n")
+ return
+ }
+
+ # Determine the number of coefficients and allocate memory.
+
+ ncoeffs = dcvstati (cv, CVNCOEFF)
+ call smark (sp)
+ call salloc (coeffs, ncoeffs, TY_DOUBLE)
+ call salloc (errors, ncoeffs, TY_DOUBLE)
+
+ if (npts == IC_NFIT(ic)) {
+ # Allocate memory for the fit.
+
+ n = npts
+ call salloc (fit, n, TY_DOUBLE)
+ call salloc (wts1, n, TY_DOUBLE)
+
+ # Eliminate rejected points and count deleted points.
+
+ call amovd (wts, Memd[wts1], n)
+ if (IC_NREJECT(ic) > 0) {
+ do i = 1, npts {
+ if (Memi[IC_REJPTS(ic)+i-1] == YES)
+ Memd[wts1+i-1] = 0.
+ }
+ }
+ deleted = 0
+ do i = 1, n {
+ if (wts[i] == 0.)
+ deleted = deleted + 1
+ }
+
+ # Get the coefficients and compute the errors.
+
+ call dcvvector (cv, x, Memd[fit], n)
+ call dcvcoeff (cv, Memd[coeffs], ncoeffs)
+ call dcverrors (cv, y, Memd[wts1], Memd[fit], n, chisqr,
+ Memd[errors])
+ rms = ic_rmsd (x, y, Memd[fit], Memd[wts1], n)
+ } else {
+ # Allocate memory for the fit.
+
+ n = IC_NFIT(ic)
+ call salloc (fit, n, TY_DOUBLE)
+ call salloc (wts1, n, TY_DOUBLE)
+
+ # Eliminate rejected points and count deleted points.
+
+ call amovd (Memd[IC_WTSFIT(ic)], Memd[wts1], n)
+ if (IC_NREJECT(ic) > 0) {
+ do i = 1, npts {
+ if (Memi[IC_REJPTS(ic)+i-1] == YES)
+ Memd[wts1+i-1] = 0.
+ }
+ }
+ deleted = 0
+ do i = 1, n {
+ if (wts[i] == 0.)
+ deleted = deleted + 1
+ }
+
+ # Get the coefficients and compute the errors.
+
+ call dcvvector (cv, Memd[IC_XFIT(ic)], Memd[fit], n)
+ rms = ic_rmsd (Memd[IC_XFIT(ic)], Memd[IC_YFIT(ic)],
+ Memd[fit], Memd[wts1], n)
+ call dcvcoeff (cv, Memd[coeffs], ncoeffs)
+ call dcverrors (cv, Memd[IC_YFIT(ic)], Memd[wts1], Memd[fit],
+ n, chisqr, Memd[errors])
+ }
+
+ # Print the error analysis.
+
+ call fprintf (fd, "# total points = %d\n# sample points = %d\n")
+ call pargi (npts)
+ call pargi (n)
+ call fprintf (fd, "# nrejected = %d\n# deleted = %d\n")
+ call pargi (IC_NREJECT(ic))
+ call pargi (deleted)
+ call fprintf (fd, "# RMS = %10.7g\n")
+ call pargd (rms)
+ call fprintf (fd, "# square root of reduced chi square = %10.7g\n")
+ call pargd (sqrt (chisqr))
+
+ call fprintf (fd, "# \t coefficent\t error\n")
+ do i = 1, ncoeffs {
+ call fprintf (fd, "# \t%14.7e\t%14.7e\n")
+ call pargd (Memd[coeffs+i-1])
+ call pargd (Memd[errors+i-1])
+ }
+
+ # Free allocated memory.
+
+ call sfree (sp)
+end
+
+
+# IC_FXYSHOW -- List data as x, y, fit, weight lines on output.
+
+procedure ic_fxyshowd (ic, cv, x, y, w, npts, fd)
+
+pointer ic # ICFIT pointer
+pointer cv # Pointer to curfit structure
+double x[npts] # Array of x data values
+double y[npts] # Array of y data values
+double w[npts] # Array of weight data values
+int npts # Number of data values
+int fd # Output file descriptor
+
+int i
+double dcveval()
+
+begin
+ # List the data being fit (not necessarily the input data).
+ call fprintf (fd, "# X Y Y FIT WEIGHT\n")
+ if (npts == IC_NFIT(ic)) {
+ do i = 1, npts {
+ call fprintf (fd, "%8g %8g %8g %8g\n")
+ call pargd (x[i])
+ call pargd (y[i])
+ call pargd (dcveval (cv, x[i]))
+ call pargd (w[i])
+ }
+ } else {
+ do i = 1, IC_NFIT(ic) {
+ call fprintf (fd, "%8g %8g %8g %8g\n")
+ call pargd (Memd[IC_XFIT(ic)+i-1])
+ call pargd (Memd[IC_YFIT(ic)+i-1])
+ call pargd (dcveval (cv, Memd[IC_XFIT(ic)+i-1]))
+ call pargd (Memd[IC_WTSFIT(ic)+i-1])
+ }
+ }
+end