[R] Combine two columns

From: <amarkey_at_uiuc.edu>
Date: Fri, 07 Mar 2008 15:09:21 -0600 (CST)

Is there a way to combine two columns within a data frame?

Example data:

id	snp	AL1	AL2
1500	30	A	B
1510	30	A	A
1520	30	A	B

This is what I would like:

indv	snp	AL1AL2
1500	30	AB
1510	30	AA
1520	30	AB

Any help is greatly appreciated.


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