[rrd-users] Re: Weird graph scaling

[Tobias Oetiker]

Yesterday you sent me mail regarding [rrd-users] Weird graph scaling:

*> 
*> I'm using RRD and PerlMagick to produce overlapping graphs.  Because
*> of the way the graphs must overlap, their scales need to be identical
*> (or else you can't read the graph).  Now, theoretically, I should
*> be able to use fetch to grab all the information for my image, sort
*> through it, and find the minimum and maximums across all the graphs.
*> If I then set the -l and -u values for all of the graphs to the
*> same values (the overall max and overall min), I expect to get a
*> graph with the same scale.
*> 
*> But it doesn't work like that.  A lot of times, the graph expands
*> much higher or much lower than it should (say, -u 134M and the
*> graph goes up to 200M).  What causes this and how can I stop it?

use --rigid in addition to -l and -u

cheers
tobi

*> TIA,
*> Philip
*> 
*> * Philip Molter
*> * Data Foundry International
*> * http://www.datafoundry.net/
*> * philip at datafoundry.net
*> 
*> --
*> Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
*> Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
*> Archive     http://www.ee.ethz.ch/~slist/rrd-users
*> WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi
*> 
*> 

-- 
 ______    __   _
/_  __/_  / /  (_) Oetiker, Timelord & SysMgr @ EE-Dept ETH-Zurich
 / // _ \/ _ \/ / TEL: +41(0)1-6325286  FAX:...1517  ICQ: 10419518 
/_/ \.__/_.__/_/ oetiker at ee.ethz.ch http://ee-staff.ethz.ch/~oetiker


--
Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
Archive     http://www.ee.ethz.ch/~slist/rrd-users
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi