Displaying 1 result from an estimated 1 matches for "nnttggaat".
2009 Feb 13
2
select on letter
...ould 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", "AACCTTNN")
z<-data.frame(index,letters)
index letters
1 1 CCTTGGAA
2 2 NNTTGGAAT
3 3 AACCTTNN
Thanks in advance!
Naomi