[BioC] Venn Diagram for 2, 3 and 4 sets (can be extended for more)

[James W. MacDonald]

Hi Steffen,

How exactly are you doing this? With more than three sets a true Venn 
diagram cannot be constructed with circles, although I think it can be 
done with ellipses.

Best,

Jim



Steffen Moeller wrote:
> Dear all,
> 
> I needed Venn Diagrams to accomodate 4 sets rather than the 3 that I got via 
> the limma package and I could not find it elsewhere. 
> 
> # Some test data
> A<- 1:20
> B<- 1:20
> C<- 2:20
> D<- 3:21
> 
> # input gathered into a list, the names
> # appear in the diagram
> input<-list(a=A,b=B,c=C,d=D)
> 
> # calculation of values that should
> # go into all the fields
> vc <- getVennCounts(input)
> 
> # drawing of diagram
> drawVennDiagram(vc)
> 
> The diagrams look like the ones from limma, i.e., no variation of circle shape 
> and to reflect the size of the sets. The only novelty is that is also works 
> on 4 sets and it is avoiding the use of classes.
> 
> What should I do with these 295 lines of code now? It does not seem enough for 
> a package on its own. Is anybody interested? Gordon?
> 
> Cheers,
> 
> Steffen
> 
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-- 
James W. MacDonald, M.S.
Biostatistician
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109
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