Thelo Thelo wrote in post #1016345:
> @Martin Wawrusch, about charts, I would like to know if you can draw as
> you can do in java for example, I mean defining a "canvas" then start
> drawing in?

1) You are talking about gui programming.  gui programming produces one 
or more windows which can be programmed to contain buttons or other 
controls with graphs.

2) ruby executes on the server, and then it sends an html page back to 
the browser.  Using gui programming to produce a window on the server 
would be pointless--the client can't see it.

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