[PD] constructing "data" - how do I see shapes?

[David Marrs]

Dear All,

I'm very excited by the "data" aspect of Pd and have been spending the 
last week reading M.P's papers on the subject and trying to make my own 
templates.  Despite my best efforts, however, I still can't work out how 
to view the data I construct!

Using M.P's own example for a moment:

    [struct struct1 float x float y float h]

    [filledpolygon 999 0 2 0 0 20 h 40 0]


This should provide me with an image of a triangle with an adjustable 
height, if I understand correctly, but where is it?!  If I load the help 
abtractions on [drawpolygon] and [filledpolygon] new canvases appears 
for them automatically with the relevant shapes drawn within, but I 
can't work out how to make these canvases appear for me.

Can anyone help me on this?  I'm sure it's something irritatingly 
straightforward that I've overlooked but I simply can't see it.

Thanks,

David


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