Re: Charting software for web use?

[Kim Wall <kim@xxxxxxxxxxxxxxxxxx>]

Stuart Grimshaw wrote:

>> Anyway, anyone know of a piece of software that will EASILY take
>> these values on a pre-determined period and create a graph (user
>> defined) for viewing on an Intranet web page? Ideally, this
>> software would be free! :-)

> Also available is good old MRTG too, but I've never used this.

Variation on a theme - RRDTool
http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/index.en.html

MRTG-style graphing, but tweakable in ways that make sense for data that
isn't network traffic.  Dead easy to integrate (you just call rrdtool
with the current sensor reading as a parameter), bit of a headache to
tweak (squillions of options that only make sense once you've had a play
with them), but well worth it for the results.

I'm using this for logging and presenting temperature/light/motion
sensor data as well as electricity and gas consumption on an intranet
page.  The rrdcgi program automagically renders graphs based on the
contents of the database each time it is called.

I'm using linux, but there's also a windows version available if that's
your definition of 'easy' :)


kim.