search for: s3allel1

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2008 Apr 17
1
NA problem when use paste function
...pe) which is also in data X. When I merge X with Y, these two variables were automatically re-named by appending .x and .y to the original variable names. As you can see on the following list, I would like to take whatever available (non-missing non-NA) in X or Y as the final value for the genotype S3Allel1. I used paste() function. However, it converts <NA> to NA as character. Would you please tell me how I can just get the genotype without pasting the NA to it? I checked the document of paste() and noticed that it used as.character() to the vector argument. I guess that is the reason I got &qu...