Hi, I'm wondering why indexing a data frame by row name doesn't work with [[. It works with [:
> sw <- swiss[1:5,1:2] > sw["Moutier", "Agriculture"] [1] 36.5 but not with [[: > sw[["Moutier", "Agriculture"]] Error in .subset2(.subset2(x, ..2), ..1) : subscript out of bounds The problem is really with the row name (and not the col name) since this works: > sw[[4, "Agriculture"]] [1] 36.5 but not this: > sw[["Moutier", 2]] Error in .subset2(.subset2(x, ..2), ..1) : subscript out of bounds No such problems with a matrix where everything works as expected: > msw <- as.matrix(sw) > msw[["Moutier", "Agriculture"]] [1] 36.5 Thanks! H. ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
