rowOrderStats(x, rows=NULL, cols=NULL, which, dim.=dim(x), ...)
colOrderStats(x, rows=NULL, cols=NULL, which, dim.=dim(x), ...)integer index in [1,K] ([1,N]) indicating which
order statistic to be returned.numeric vector of length N (K).na.rm=FALSE (if such an argument would
be available).rowOrderStats() is optimized for both
speed and memory.
To avoid coercing to doubles (and hence memory allocation), there
is a unique implementation for integer matrices.rowMeans() in colSums().