Message-ID: <87vfmt3yuv.fsf@lumen.indyrad.iupui.edu>
Date: 2004-01-30T21:34:00Z
From: Michael A. Miller
Subject: looping over factors
In-Reply-To: <644D9337A02FC24689647BF9E48EC39E08ABB742@drm556> (Frank Samuelson's message of "Fri, 30 Jan 2004 14:08:26 -0500")
>>>>> "Samuelson," == Samuelson, Frank* <Samuelson> writes:
> How does one loop over factors?
You can loop on the levels of your factor:
> b<-factor(c('caseX','caseY', 'caseZ', 'caseX'))
> b
[1] caseX caseY caseZ caseX
Levels: caseX caseY caseZ
> for ( i in levels(b) ) { print(i) }
[1] "caseX"
[1] "caseY"
[1] "caseZ"
>
Mike