[rrd-developers] Re: PIE CHART ??? (long)

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Fri Jun 7 16:20:34 MEST 2002

Michael T. Babcock wrote:
> > Perhaps there is a clever way to import the output of other programs
> > into the canvas?  "rrdtool graph" could then call those other 
> > programs.
> In my mind, 'rrdtool graph' would use an XML format to describe a
> completed graph, and then fetch the data and prepare it for plotting.
> If it had access to one of the (currently non-existent) programs it
> supported, it would use one of them to create the given graph type (at
> the user's discretion, unless of course, only one of those programs
> supports a given graph type) by passing it the data points.  In the
> absence of those programs, rrdtool would itself create the graph output
> using the current routines.

This is not entirely the same as what I have in mind.

In my vision rrdtool graph could also ask program xyz to provide
a picture of, say 100 by 100 pixels.  This picture would then be
integrated in the resulting .png file at position x and y.

Similarly rrdtool graph would "call" "rrdtool label" to generate
a label of 100 by 10 pixels.  The resulting image would be visible
in the image at position x and y+15

And so on for other labels, grid, et cetera. 

 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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