[rrd-users] displaying graphs which often overlap

Aleksandr Pasechnik aleksandr.pasechnik at gmail.com
Mon May 9 00:47:39 CEST 2011

i'm not sure if this will help, but i'm currently plotting a number of graphs which have completely different y axes, but all the same x axes. i make sure there is no x axis text on any but the bottom most graph and give them all a transparent background. i then stack them all using imagemagick, producing a single image with three stacked graphs lined up in the time axis. you might be able to do the same for your three battery temperatures. also there are ways to create offsets in the graphed output which you might use to do it all in a single graph, though thats not really ideal for gauge type data: its not really additive.

On May 8, 2011, at 6:40 PM, Martin T wrote:

> I'm monitoring battery temperatures of three uninterruptible power
> supplies. All three are usually 35C- very seldom the temperature
> increases or decreases a degree or two for a short period of time. So
> as you can imagine, I have three lines overlapped so basically it
> looks like I'm monitoring only one device. It's not some sort of
> serious problem or something, but I was just wondering, are there some
> clever techniques to display/generate graphs in such situations?
> regards,
> martin
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