[rrd-users] Area under graph?

[Simon Mullis]

Hello all...

OK, I'm using rrdcgi and have written a few web pages that allow the dynamic
input of the start / end date or time for the graph generation.

My question is quite simply:

How can I calculate the total area under a graph?  In this case I am
interested in the total amount of traffic transferred in a time period.

I have the average, from 

GPRINT:<var>:AVERAGE: ....

And I have the time period as a CGI variable.

Can I simply multiply them together to get the total traffic transferred?
Is there a better way to do it?  Is there an undocumented :TOTAL: variable?

Help and Thankyou!

SM

Simon Mullis
Service Development Consultant
simon.mullis at equinoxsolutions.com
Equinox Converged Solutions Ltd
Tel: +44(0)1252 405 600
Mob: +44(0)7766 087170
http://www.equinoxsolutions.com



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