[rrd-users] graph question

[Simon Hobson]

s pascal <segar.pascal at gmail.com> wrote:

> But when i create the graph, the temperature curve shows only positive temperature and not negative temperature.
> 
> When the temperature is going under 0 C, the curve is blank then become visible when temperature is positive.

I can't see anything wrong with either command.
What data are you putting in ?
What data is stored - use rrdtool fetch to dump it ?

It might be worth creating a test file and putting known test data into it, then see what comes out.