[R] sorting & subsetting a data.frame

[Liviu Andronic]

Dear all
This may be obvious, but I cannot get it working. I'm trying to subset
& sort a data frame in one go.
x <- iris
x$Species1 <- as.character(x$Species)
##subsetting alone works fine
with(x, x[Sepal.Length==6.7,])
##sorting alone works fine
with(x, x[order(Sepal.Length, rev(sort(Species1))),])
##gets subsetted, but not sorted as expected
with(x, x[(Sepal.Length==6.7) & order(Sepal.Length, rev(sort(Species1))),])
##gets subsetted, but sorts very strangely
xa <- with(x, x[Sepal.Length==6.7,]); with(xa, xa[order(Sepal.Length,
rev(sort(Species1))),])
xa <- with(x, x[Sepal.Length==6.7,]); with(xa, xa[order(rev(sort(Species1))),])

I've checked The R Inferno, Quick-R and several other places with no
obvious solution.

Any ideas? Regards
Liviu


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