diff options
| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
| commit | fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch) | |
| tree | bdda434976bc09c864f2e4fa6f16ba1952b1e555 /noao/onedspec/ecidentify/ecffit/ecfrms.x | |
| download | iraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz | |
Initial commit
Diffstat (limited to 'noao/onedspec/ecidentify/ecffit/ecfrms.x')
| -rw-r--r-- | noao/onedspec/ecidentify/ecffit/ecfrms.x | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/noao/onedspec/ecidentify/ecffit/ecfrms.x b/noao/onedspec/ecidentify/ecffit/ecfrms.x new file mode 100644 index 00000000..1140dc29 --- /dev/null +++ b/noao/onedspec/ecidentify/ecffit/ecfrms.x @@ -0,0 +1,26 @@ +# ECF_RMS -- Compute the rms with deleted points ignored. + +double procedure ecf_rms (r, w, npts) + +double r[npts] # Residuals +double w[npts] # Weights +int npts # Number of points + +int i, n +double rms + +begin + n = 0 + rms = 0. + do i = 1, npts { + if (w[i] == 0.) + next + n = n + 1 + rms = rms + r[i] * r[i] + } + if (n > 0) + rms = sqrt (rms / n) + else + rms = INDEFD + return (rms) +end |