[OS X TeX] Program to draw Venn diagrams?

[Adam Maxwell]

On 14 Apr, 2004, at 11:43, John B.Thoo wrote:

> Hi.  I'm sorry that this is not strictly a TeX question, but I'm not 
> sure where else to ask.  What is a program to create Venn diagrams 
> conveniently that I may include in my LaTeX document?  (there, now 
> it's TeX related ;-)  I'm interested in shading intersections and 
> unions.  I tried using xfig, but it isn't apparent to me how to shade 
> intersections or unions of circles or ellipses.  I'm using Panther.  
> TIA.

I don't see how you can do this with xfig, either.  I managed to do it 
with Create by overlapping two circles, then using two filled sectors 
with no stroke (one from each side) to show the intersection (at least, 
I think it was an intersection :).  Create is non-free, but you can get 
a fully functional demo.

-- Adam

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