I am attempting to produce crosstabulations between two variables for
subgroups defined by a third factor variable. I'm using by() and
CrossTable() in package gmodels. I get the printing of the tables first
and then a printing of each level of the INDICES. For example:
library(gmodels)
by(warpbreaks, warpbreaks$tension, function(x){CrossTable(x$wool,
x$breaks > 30, format="SPSS", fisher=TRUE)})
Is there a way to change this so that the CrossTable() output is
labeled by the levels of the INDICES variable? I think this has to do
with how CrossTable returns output, because the following does what I want:
by(warpbreaks, warpbreaks$tension, function(x){summary(lm(breaks ~ wool,
data = x))})
thanks,
Chuck
--
Chuck Cleland, Ph.D.
NDRI, Inc.
71 West 23rd Street, 8th floor
New York, NY 10010
tel: (212) 845-4495 (Tu, Th)
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