Thanks! My LaTeX knowledge is quite limited, I don't even know which
one of these

http://www.ucc.ie/cgi-bin/uncgi/ctan?term=PSTricks

I should install to get PSTricks working. I have used TeXShop once or
twice on my Mac. So, I maybe prefer plain R solution.

-J

2010/8/16 Marc Schwartz <marc_schwa...@me.com>:
>
> On Aug 16, 2010, at 12:59 PM, johannes rara wrote:
>
>> I have a large dataset and I would like to make some kind of flowchart
>> from this dataset. The idea is to show rowcounts from data subsets:
>>
>>                  data1
>>             rows= 100000
>>                     |
>>                    / \
>>                   /   \
>>      males          females,
>>  rows=500000   rows=500000
>>                          /\
>>                         /  \
>>                        /    \
>>         brown hair       white hair
>>         rows=25000    rows=25000
>>
>> Any ideas how this can be done using R?
>
>
> One approach is using Sweave along with PSTricks, specifically the pst-tree 
> package.
>
> More information and examples here:
>
>  http://tug.org/PSTricks/main.cgi?file=pst-tree/pst-tree
>
> The Indian TUG also has a pretty decent tutorial series on using PSTricks 
> here:
>
>  http://sarovar.org/projects/pstricks/
>
> with Chapter 11 focusing on creating trees:
>
>  http://sarovar.org/frs/download.php/1188/chap11.pdf
>
>
> I use pst-tree (and pst-node) to create subject disposition flow charts and 
> stratification trees for clinical studies. I create the framework for the TeX 
> graphic and then use \Sexpr{}'s to fill in the counts, percentages, other 
> annotation, etc. as required from the data.
>
>
> HTH,
>
> Marc Schwartz
>
>

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