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subcomp
2016 Apr 15
0
a replace for subset
...t=factor(sample(c("ON","OFF"),100,TRUE)),
OR=factor(sample(c("S","T"),100,TRUE)),
PAT=factor(sample(c("low","high","middle"),100,TRUE)))
Then you can create logical expressions for all combinations of your
levels like this:
subcomb<-expand.grid(list(levels(mydata$COUNTRY),
levels(mydata$Light),levels(mydata$OR),levels(mydata$PAT)))
Then you can loop through this data frame creating a string that
corresponds to your logical expression:
for(subsetter in 1:dim(subcomb)[1]) {
subexpr<-paste(names(mydata)[3:6],subcomb[su...