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POmatch and count values in sequence by group in R
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2013-12-13T02:23:27.410
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Body
Here is my data: <pre><code>group <- c(1,1,1,1,2,2,2,3,3,4,4,4,4) X1 <- c("A","A","A","A","B","A","B","A","A","B","B","B","B") X2 <- c("A","A","A","A","B","B","B","A","A","B","B","A","A") X3 <- c("B","A","A","A","B","B","B","B","B","B","B","B","B") X4 <- c("A","A","A","B","B","B","A","A","A","B","A","B","B") X5 <- c("A","A","A","A","B","B","B","A","A","A","B","B","B") X6 <- c("A","A","A","A","B","A","B","A","A","B","B","A","A") mydf <- data.frame (group, X1, X2, X3, X4, X5, X6) </code></pre> Thus data is: <pre><code> group X1 X2 X3 X4 X5 X6 1 1 A A B A A A 2 1 A A A A A A 3 1 A A A A A A 4 1 A A A B A A 5 2 B B B B B B 6 2 A B B B B A 7 2 B B B A B B 8 3 A A B A A A 9 3 A A B A A A 10 4 B B B B A B 11 4 B B B A B B 12 4 B A B B B A 13 4 B A B B B A </code></pre> Now I need to compare the first row with rest of rows in group. <pre><code> group X1 X2 X3 X4 X5 X6 1 1 A A B A A A 2 1 A A A A A A TRUE TRUE FALSE TRUE TRUE TRUE </code></pre> Here mismatch is only at X3. 1 out of 6 = 1/6 = 17% Similarly compare 3 with 1st in group 1. <pre><code> group X1 X2 X3 X4 X5 X6 1 1 A A B A A A 3 1 A A A A A A </code></pre> mismatch = 17% Also compare 4 with 1st in group 1. <pre><code> group X1 X2 X3 X4 X5 X6 1 1 A A B A A A 4 1 A A A B A A </code></pre> mismatch = 2/6 = 34% Similarly for group 2 (1st row of group to i.e. 5 with 6) <pre><code> group X1 X2 X3 X4 X5 X6 5 2 B B B B B B 6 2 A B B B B A </code></pre> mismatch = 2/6 = 34% Similarly: <pre><code> group X1 X2 X3 X4 X5 X6 5 2 B B B B B B 7 2 B B B A B B </code></pre> mismatch = 1/6 = 17% My trial: <pre><code>match (mydf[1,], mydf[2,]) match (mydf[1,], mydf[3,]) </code></pre>
Tags
<r><match><sequence>
Title
match and count values in sequence by group in R
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1. PO
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