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2008 Oct 17
2
A question about "union"
...union, but I have many vectors and I want to get the union of all of them. So I wrote a loop: all <-c(); for(var in ls(pattern="xyz")) # all of the vectors with pattern of "xyz" { all <- union(all, var); } but the result is like this: ("xyzblabla1", "xyzblabla2", "abcxyz", ... ) -- just a collection of the variable names, not the union of their elements. How can I solve this problem? thanks! Leon