[R] Creating subsets of a matrix
poolmunch at gmail.com
Sun Jan 23 19:36:14 CET 2011
Say I have 2 columns, bmi and gender, the first being all the values and the
second being male or female. How would I subset this into males only and
females only? I have searched these fora and read endlessly about select
and split() functions but to no avail. Also the table is not ordered.
bmi gender -> bmi gender + bmi gender
1 24.78 male 1 24.78 male 3 23.18 female
2 26.42 male 2 26.42 male 4 22.36 female
3 23.18 female ... ...
4 22.36 female
Thank you in advance
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