[R] Check character string for value and assign corresponding value in a new variable

Hiro hpk2106 at columbia.edu
Fri Apr 23 17:43:25 CEST 2010

Hi all,

Here is what I am trying to do. It doesn't seem like a complex command but I
am a beginner at R.

Lets say I have this variable:
test$v1 = rep(c("ACAM2343", "ACAM3838", "ACPP2598", "ACPA8355", "DEAM234",
"DEPA38485"), each = 10)

1.  if test$v1 character string contains "PP" or "PA" set test$v2 value to


2. if test$v1 character 3 and 4 equal "A" and M", set test$v2 to "LOSE".

Please help!

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