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]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html and provide commented, minimal, > self-contained, reproducible code. -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
