hi all assume that i have the following table a=rbind(c(T,T,F),c(F,F,T)) > a [,1] [,2] [,3] [1,] TRUE TRUE FALSE [2,] FALSE FALSE TRUE I would like to change all the FALSE entries to a blank. how can i do this? i could simply use a[a==F]="" a but then how would i remove the " " from the entries. i know that this should be very easy!!! / allan