rrdtool and rails

How would one get the information stored in rrdtool into a database that rails can present to the user?
Would it be possible to combine this data with other data in the same database to handle virtual connections between the data?

-Ron

rrdtool uses its own on-disk database format (called a round-robin
database) which handles expiry, the data scaling, etc. internally. It
won't map well into SQL, so it's probably best to just keep the files
external to the "real" database.

I have not yet found a ruby rrd binding, so I've been using a call out
to rrdtool to generate my images, and putting them in the public
directory so they can be linked to with the usual tricks.

--Michael

Just FYI - http://rubyforge.org/projects/rrrdtool/
-Ron