From: Tobias Oetiker <tobi@oetiker.ch>
Date: Mon, 4 Sep 2006 21:10:55 +0000 (+0000)
Subject: in logarithmic mode minval must not be <= 0
X-Git-Tag: 1.2.16~57
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6f2c839910e3382a8b6043e92850c20ec19b234c;p=thirdparty%2Frrdtool-1.x.git

in logarithmic mode minval must not be <= 0

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@887 a5681a0c-68f1-0310-ab6d-d61299d08faa
---

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index cd5bdfc1..ecf19fd3 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -1062,8 +1062,9 @@ data_proc( image_desc_t *im ){
 			** relevant for min and max
 			*/
 			if (finite(paintval) && im->gdes[ii].gf != GF_TICK ) {
-			    if (isnan(minval) || paintval <  minval)
-				minval = paintval;
+			    if ((isnan(minval) || paintval <  minval ) &&
+			      ! (im->logarithmic && paintval <= 0.0)) 
+					minval = paintval;
 			    if (isnan(maxval) || paintval >  maxval)
 				maxval = paintval;
 			}