[rrd-users] rrdtool update not working

[Simon Hobson]

Emily Chouinard wrote:
>So I can't seem to figure out why my update doesn't work, its returns
>only NaN values and I can't seem to figure out why, everything looks
>okay and my program runs but its not updating and I have no idea how to
>fix it. Any one have any suggestions? Or what errors to looks for, I can
>send you my code if you would like to help me, please I just need to
>finish this project, my supervisor gave it to me as research and I
>haven't been able to finish it, any help would be greatly appreciated!

How can anyone ehlp you - we know NOTHING about what you are doing 
other than "something involving rrdtool" !

What command did you use to create the rrd file ?

What update commands does your program use ?

What do you expect to be returned ?
What is actually returned (by rrdtool fetch) ?