[rrd-users] Re: How to draw color graphs

[Alex van den Bogaerdt]

Pawel Dworniak wrote:

> I want to draw my graphs in different colors depending on transfer rate
> 

[snip standard stuff]

>       DEF:Incoming1=/Inetpub/wwwroot/mrtg/example.rrd:ds0:MAX
>       DEF:Outgoing1=/Inetpub/wwwroot/mrtg/example.rrd:ds1:MAX
>       CDEF:Incoming=Incoming1,-8,*
>       CDEF:Outgoing=Outgoing1,8,*
>       CDEF:OK=Incoming,6000,GT,0,Incoming,IF

You are multiplying the incoming counter by -1.  Assuming the original
counter has positive values, you end up with negative values.
Then you test for this negative number to be > 6000.  If it is not
(which will always be the case) so OK is just a copy of Incoming.

>       AREA:OK#000000:"OK"
>       AREA:Incoming#00ff00

Here you graph OK, then you paint it over with Incoming.  Nett result
is Incoming.

You want something like:

      DEF:Incoming1=/Inetpub/wwwroot/mrtg/example.rrd:ds0:MAX
      DEF:Outgoing1=/Inetpub/wwwroot/mrtg/example.rrd:ds1:MAX
      CDEF:Incoming=Incoming1,-8,*
      CDEF:Outgoing=Outgoing1,8,*
      CDEF:OK=Incoming,-6000,LT,Incoming,UNKN,IF

Now OK is defined only if Incoming < -6000. 

      AREA:Incoming#00ff00
      AREA:OK#000000:"OK"

This will paint Incoming and then paint it over with OK.  However,
if Incoming is not high enough, there's no OK to paint.

HTH
-- 
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 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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