[rrd-users] Re: background change

[Alex van den Bogaerdt]

On Wed, Sep 21, 2005 at 05:05:31PM -0400, Gregory (Grisha) Trubetskoy wrote:

> On this graph:
> 
> http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/gallery/panel_user.png
> 
> periods of downtime are marked by background shifting to pink. How is this 
> done? Any tips/pointers/links would be highly appreciated!

If some variable is unknown, then plot to infinite, else don't plot.

Convert to CDEF and draw:

CDEF:background=datasource,UN,INF,UNKN,IF
AREA:background#FFCCCC

(do this first, overlay the rest)

It also seems to plot the datasource using TICK (that small coloured
bar on the bottom) and of course all datasources are plot as well.


HTH
Alex

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