[rrd-users] Re: PHP and gradiated graphs

[spiegela at birch.net]

I had a hard time figuring this out myself.  Alex's answer to this question is
hidden deep withing the archives here: 
http://www.ee.ethz.ch/~slist/rrd-users/msg04663.html

He's changing the background, instead of another datasource, but the concept is
the same (replace INF, with a DEF to the other datasource).
like so:

DEF:def1=/path/to/rrdfile.rrd:ds1:AVERAGE
DEF:def2=/path/to/rrdfile.rrd:ds2:AVERAGE
CDEF:color1=def1,10,GE,def2,UNKN,IF
CDEF:color2=def1,20,GE,def2,UNKN,IF

and keep adding CDEFs for each level.

Hope this helps (these graphs look cool)

Aaron Spiegel

Quoting Jeffrey Wheat <jeff at nt.cetlink.net>:

> 
> Hello everyone,
> 
> 	I am wondering if anyone has a recipe for creating graphs with
> gradiating colors in PHP4, very similar to the example seen at
> http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/gallery/aragon-01.html
> 
> 	I've looked around but haven't found or figured out a way to do this
> yet. If anyone can point me in the right direction, I would be very
> thankful.
> Please reply to me directly as I am not on the list presently. I will post
> anything usual that is sent to me.
> 
> Very many thanks!
> Jeffrey
> 
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