[R] A question about "union"

Leon Yee yee.leon at gmail.com
Fri Oct 17 12:23:24 CEST 2008

Dear all,

    I have a question about "union".  "union" handles two vectors' 
elements to get their 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 

How can I solve this problem?



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