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

[James W. MacDonald]

That is very similar to what Steffen does. However, these are not Venn 
diagrams, as you are missing two of the intersections. There should be a 
total of 15 intersections

choose(4,1) + choose(4,2) + choose(4,3) + choose(4,4)

And you only have 13.

Best,

Jim



Thomas Girke wrote:
> Here is a script that does something similar:
> http://faculty.ucr.edu/~tgirke/Documents/R_BioCond/R_BioCondManual.html#R_graphics_venn
> 
> Thomas
> 
> On Fri 10/05/07 09:29, James W. MacDonald wrote:
>> 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
>> 734-647-5623
>>
>> _______________________________________________
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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
734-647-5623