[rrd-users] rrdtool 1.5 'don't understand' my previously working CDEF

Johan Ström johan at stromnet.se
Tue Feb 2 17:44:33 CET 2016


I've been using rrdtool 1.4.x for years with a certain script, but I got 
into some issues when FreeBSD introduced 1.5.5 (1.4.8 before).
Basically, I have some temperature data, in which I want to filter out 
the exact value 85.00, and "render" an unkn/nan instead:


Since the upgrade, rrdtool now fails with ERROR: don't understand 
I've checked again and again, but I fail to see any syntax errors or 
other apparent issues. I've tried with UNKN instead of NaN and other 
stuff, but no success..

If anyone could point me in the right direction I'd be very happy!


More information about the rrd-users mailing list