1 files changed, 27 insertions, 0 deletions
diff --git a/noao/onedspec/splot/fixx.x b/noao/onedspec/splot/fixx.x
new file mode 100644
index 00000000..65bd4e38
--- /dev/null
+++ b/noao/onedspec/splot/fixx.x
@@ -0,0 +1,27 @@
+include	<smw.h>
+
+# FIXX - Adjust so that pixel indices are increasing.
+
+procedure fixx (sh, x1, x2, y1, y2, i1, i2)
+
+pointer	sh
+real	x1, x2, y1, y2
+int	i1, i2
+
+double	z, z1, z2, shdr_wl(), shdr_lw()
+
+begin
+	z1 = x1
+	z2 = x2
+	z1 = max (0.5D0, min (double (SN(sh)+.499), shdr_wl(sh, z1)))
+	z2 = max (0.5D0, min (double (SN(sh)+.499), shdr_wl(sh, z2)))
+	if (z1 > z2) {
+	    z = y1; y1 = y2; y2 = z
+	    z = z1; z1 = z2; z2 = z
+	}
+
+	x1 = shdr_lw (sh, z1)
+	x2 = shdr_lw (sh, z2)
+	i1 = nint (z1)
+	i2 = nint (z2)
+end