Hi David, Gabor, Arun, and Rolf, Thanks for your replies to my question. Very interesting and very helpful. I particularly liked the one-line solutions proposed by David and Gabor. I had a suspicion that this conversion could be done using only a minimal amount of code. For what I'm doing, it's helpful to have a "State" column that is character. For that reason, David's solution might be the best in this particular instance. Thanks again everyone. Paul
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