Re: [R] subset select="variable with a list of names"

2012-02-09 Thread peter dalgaard
>> Subject: [R] subset select="variable with a list of names" >> >> Hello, >> I would like to make a function which extracts a subset, from a >> dataset, >> with only the columns that I want (specifying their names). >> >> For example,

Re: [R] subset select="variable with a list of names"

2012-02-09 Thread Nordlund, Dan (DSHS/RDA)
> -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Francisco > Sent: Thursday, February 09, 2012 4:52 AM > To: r-help@r-project.org > Subject: [R] subset select="variable with a list of names" > &g

[R] subset select="variable with a list of names"

2012-02-09 Thread Francisco
Hello, I would like to make a function which extracts a subset, from a dataset, with only the columns that I want (specifying their names). For example, having this matrix: > mydata<-matrix(c(22,1,3,2001,24,5,7,2002,26,7,8,2002,28,5,7,2003), byrow=TRUE, ncol=4, dimnames=list(c(1,2,3,4), c("ag