Re: [cgiapp] Dynamic charts?

[Jason Purdy <suppressed>]

Mark A. Fuller wrote:
> From: Jason Purdy <suppressed>
>
> > what comes to mind is using the GD::Graph package to output a PNG file 
>
>
> The src attribute of the img element can refer to a CGI which emits PNG (or whatever) content. Look at Yahoo's stock graphs. The HTML img element is attributed:
>
>    src="http://ichart.yahoo.com/t?s=MOT
>
> That's useful if you want the charts to be realtime. If they only change once a day, then you might schedule their creation and refer to static images.

I like that and I would like the charts to be realtime.  This could work 
nicely in the cgiapp with one runmode to put together the template and 
another runmode to output the PNG file.

The only problem I see is that I would have to gather the data twice, 
one for the first template, which has the data in plain ol' text and 
another time to put together the PNG file.

I guess I could do some magic footwork by having the first runmode 
output a Storable file w/ the data structure frozen and then the second 
runmode could thaw that.

Jason

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