when building the sgridstep in alt-y-grid mode, take the --base into consideration.

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@641 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 77a5051..43af725 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -1547,7 +1547,7 @@ calc_horizontal_grid(image_desc_t   *im)
            if(decimals <= 0) /* everything is small. make place for zero */
                decimals = 1;
            
-           im->ygrid_scale.gridstep = pow((double)10, floor(log10(range)));
+           im->ygrid_scale.gridstep = pow((double)10, floor(log10(range*im->viewfactor/im->magfact)))/im->viewfactor*im->magfact;
            
            if(im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
                im->ygrid_scale.gridstep = 0.1;