Hi all, colSums() does not work as I expect when there are no rows. For example:
> x = matrix(0, nrow=0, ncol=5) > colSums(x) Error in colSums(x, n, prod(dn), na.rm) : invalid value of n I expected to get 0's, as is given by apply(): > apply(x, 2, sum, na.rm=TRUE) [1] 0 0 0 0 0 This behavior is also inconsistent with the case when NA's are removed: > colSums(matrix(NA, nrow=1, ncol=5), na.rm=TRUE) [1] 0 0 0 0 0 (This latter case is described in the documentation.) The same problem occurs with rowSums(), of course. Thanks, Hsiu-Khuern. --please do not edit the information below-- Version: platform = i386-pc-linux-gnu arch = i386 os = linux-gnu system = i386, linux-gnu status = major = 2 minor = 0.1 year = 2004 month = 11 day = 15 language = R Search Path: .GlobalEnv, package:methods, package:stats, package:graphics, package:grDevices, package:utils, Autoloads, package:base ______________________________________________ R-devel@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
