Message-ID: <73f827b50812232106n1621cf56m9f102b39d0213f0c@mail.gmail.com>
Date: 2008-12-24T05:06:35Z
From: Gundala Viswanath
Subject: Conditional Counting with Table
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