On Tue, Feb 20, 2007 at 06:50:41PM +0100, hansi tesarz wrote: > Thanks, it works. > > i also changed the dsdef line to -40 instead of zero. > sprintf(dsdef, "DS:%s:%s:600:-40:U", dsname, dstype); > and recreated the rrd file. Thanks for noticing that, I'd missed it. Fixed in my code now. Regards, Henrik