[rrd-users] Trendlines in rrdgraph

[Tonny Verberk]

Hi All,

I'am trying to insert a trendline in an rrdgraph just like
http://oss.oetiker.ch/rrdtool/gallery/index.en.html shows under
Filesystem Utilization and Predicted Trends

Can somebody give me some hints on how the set it up and use it within 
rrdgraph.

I have tried contacting Stuart (the originator of the graph) but my 
emails to him bounced back to me.

TIA, Tonny.