[R] Stratified data summaries

[Dylan Beaudette]

Hi, the plyr package is your friend.

Here is a tutorial on a related subject:

http://casoilresource.lawr.ucdavis.edu/drupal/node/836

cheers,
Dylan

On Thursday 09 July 2009, Hayes, Rachel M wrote:
> Hi All,
>
>
>
> I'm trying to automate a data summary using summary or describe from the
> HMisc package.  I want to stratify my data set by patient_type.  I was
> hoping to do something like:
>
>
>
> Describe(myDataFrame ~ patient_type)
>
>
>
> I can create data subsets and run the describe function one at a time,
> but there's got to be a better way.  Any suggestions?
>
>
>
> Rachel
>
>
> 	[[alternative HTML version deleted]]
>
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-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341