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dimitri
2009 Feb 13
2
select on letter
Hi,
I was wondering if anybody can help me. In the small data set below I would like to select the index which doesn't contain the letter 'N' in the variable 'letters'. How can I discard these rows when the letter has a different position everytime (but the same letter for the whole column)?
index<-c(1,2,3)
letters<-c("CCTTGGAA", "NNTTGGAAT",