From 1bff1c8d0bda4b4c80b53251972f8d5bf46dcd98 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Thu, 24 Mar 2011 15:23:54 +0100
Subject: render_hkl: Ignore infinities

---
 src/render_hkl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/render_hkl.c b/src/render_hkl.c
index f42235d4..44ec23fe 100644
--- a/src/render_hkl.c
+++ b/src/render_hkl.c
@@ -161,7 +161,9 @@ static void draw_circles(signed int xh, signed int xk, signed int xl,
 			if ( fabs(v) > fabs(*max_v) ) *max_v = fabs(v);
 
 			/* Find max value for colour scale */
-			if ( fabs(val) > fabs(*max_val) ) {
+			if ( !isnan(val) && !isinf(val)
+			  && (fabs(val) > fabs(*max_val)) )
+			{
 				*max_val = fabs(val);
 			}
 
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