On Sun, Sep 24, 2006 at 06:14:18PM +0200, Rene Fritzsche wrote: > So what i really need is a function to integrate the > function of received energy. > Here is what i tried to do to build the sum of all > values of the past: [using rrdtool graph] > > DEF:Ls=Light.rrd:D1:AVERAGE > CDEF:E=PREV,Ls,60,*,+ > LINE:E#FF0000 > > but it wont work .. E is allways 0 or not defined [i dont > see any line]. i think the PREV-Function isnt working for > non "DEF-Values"..inconsistent with the manual-page.
There are two different PREV functions. I think you need the other one. -- Alex van den Bogaerdt http://www.vandenbogaerdt.nl/rrdtool/ -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/rrd-users WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
