Re: [R] logical operators in 'subset'

2008/11/13 Reitsma, Rene - COB <[EMAIL PROTECTED]>: >>subset(foo, c1 > 1 && c2 > 5) > [1] c1 c2 c3 > <0 rows> (or 0-length row.names) Too many ampersands: > subset(foo, c1 > 1 & c2 > 5) c1 c2 c3 r3 3 6 9 See help("&") Barry __ R-help@r-projec

[R] logical operators in 'subset'

Dear All, Am I correct in believing that logical operators such as && and || cannot be used as part of a 'subset' logical expression? Example: >foo = as.data.frame(matrix(c(1:9), nrow=3, ncol=3, dimnames=list(c("r1","r2","r3"),c("c1","c2","c3" >foo c1 c2 c3 r1 1 4 7 r2 2 5 8 r3