[rrd-users] Working with linear slope calculations

A Darren Dunham ddunham at taos.com
Tue Jan 22 16:52:35 CET 2008

On Tue, Jan 22, 2008 at 08:00:39AM +0000, Simon Hobson wrote:
> If you need to convert within the graph, then simply plug in the 
> correct figures to an RPN expression, eg :
> t=p,400,*,86400,/,s,+
> Given p as the number of pixels found from some other calculation, 
> 400 & 86400 are the graph width and duration as given in the graph 
> command, and s is the graph start time (also given implicitly or 
> explicitly in the graph command); then t is the time you are looking 
> for.

That's the bit I'm trying to avoid.  It seems like I have to hardcode
the size of the graph within a calculation.  That makes changing things
significantly more complex.  From your suggestion, I take it there's no
way to poll for those values directly?

Darren Dunham                                           ddunham at taos.com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
         < This line left intentionally blank to confuse you. >

More information about the rrd-users mailing list