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