Dear all, I have the following data frame: V1 V2 aaa chr1 aaa chr2 aaa NM aaa QC aaa chr10 att NM att chr7 What I want to do is to count the string (V1). But the condition of counting is: if the V2 of the string is "NM" or "QC" then the count is not increased. Hence the contigency table will look like this: #tag count aaa 3 att 1 Is there a compact way to achieve that in R? I am thinking of using "table" but can't see how to impose such condition into it. - Gundala Viswanath Jakarta - Indonesia
Conditional Counting with Table
2 messages · Gundala Viswanath, Gustavo Carvalho
Hello,
Something like this should work:
table(test$V1[!test$V2 %in% c("NM","QC")])
Cheers,
Gustavo.
On Wed, Dec 24, 2008 at 3:06 AM, Gundala Viswanath <gundalav at gmail.com> wrote:
Dear all, I have the following data frame: V1 V2 aaa chr1 aaa chr2 aaa NM aaa QC aaa chr10 att NM att chr7 What I want to do is to count the string (V1). But the condition of counting is: if the V2 of the string is "NM" or "QC" then the count is not increased. Hence the contigency table will look like this: #tag count aaa 3 att 1 Is there a compact way to achieve that in R? I am thinking of using "table" but can't see how to impose such condition into it. - Gundala Viswanath Jakarta - Indonesia
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