VDEF creates different Minimums

Moins,

I have some data to create a graph. I create one graph with a size, which it’s the standard size. So I don’t set width and height. In this graph the VDEF for MINIMUM

is correct calculated.

Then I create a second graph, bigger than the other with the width of 1024pixel and heigth of 768 pixel. All other Definitions are the same like the first. But here the VDEF for

MINIMUM don’t calculated correct. The value is to high.

So here is a link to the little Graph: http://www.mordur.de/0014.f83d.cd16_12.png

And the big: http://www.mordur.de/0014.f83d.cd16_12_big.png

You can see that the MINIMUM in the big pic is incorrect.

Here are the commands to create:

Normal Pic:

rrdtool graph /srv/www/htdocs/modreport/pics/0014.f83d.cd16_12.png  --start 1245813840  --end 1245921840  --title='1.3.6.1.2.1.10.127.1.1.4.1.2.3 von 0014.f83d.cd16'   -X 1   --vertical-label='_' --color CANVAS#EEEEEE --color GRID#FF5000 --color AXIS#0000A0 --color ARROW#0000A0  DEF:myoid=/srv/www/htdocs/modreport/reports/0014.f83d.cd16_12.rrd:OID_12:AVERAGE  CDEF:realoid=myoid,1,\*     VDEF:min=realoid,MINIMUM  GPRINT:min:"Minimum %.2lf "    VDEF:max=realoid,MAXIMUM  GPRINT:max:"Maximum %.2lf "  LINE1:realoid#0000A0

Big Pic:

rrdtool graph /srv/www/htdocs/modreport/pics/0014.f83d.cd16_12_big.png  --start 1245813840  --end 1245921840  --title='1.3.6.1.2.1.10.127.1.1.4.1.2.3 von 0014.f83d.cd16'   -X 1   --vertical-label='_' --color CANVAS#EEEEEE --color GRID#FF5000 --color AXIS#0000A0 --color ARROW#0000A0 --width=1024  --height=768   DEF:myoid=/srv/www/htdocs/modreport/reports/0014.f83d.cd16_12.rrd:OID_12:AVERAGE  CDEF:realoid=myoid,1,\*     VDEF:min=realoid,MINIMUM  GPRINT:min:"Minimum %.2lf "    VDEF:max=realoid,MAXIMUM  GPRINT:max:"Maximum %.2lf "  LINE1:realoid#0000A0

The MAXIMUM is correct calculated in both. I’ve check this whith a rrdtool fetch at the real values.

regards

Sven Rothe
ALBAKOM GmbH
Streuwiesenweg 44
18119 Rostock-Diedrichshagen

Tel.:   0381-77896-30 
Fax.:   0381-77896-33
e-mail: rothe@...