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

[rrdtool.git] / src / rrd_graph.c

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 77a5051386fbf735fc7f251085fcfe329ea5969a..43af725762805f95ca00327132e9c8b77c67fca2 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;