Re: [R] Random Sample with Unique function

a subset of the data.frame? Thanks Krystyna Date: Tue, 28 Apr 2009 14:33:22 +0200 From: lig...@statistik.tu-dortmund.de To: kagola...@hotmail.com CC: r-help@r-project.org Subject: Re: [R] Random Sample with Unique function In order to use stratified sampling, either try to implement it yourself

[R] Random Sample with Unique function

Dear R-users I have a dataset of 243 lines with replicate information for 20 different individuals (ID). I would like to randomly sample this dataset 100 times with a selection of unique IDs in each sample. First to create a random sample I have; cc-read.table(blah.blah.blah) names(cc) [1]

Re: [R] Random Sample with Unique function

In order to use stratified sampling, either try to implement it yourself or use the sampling package and its function strata() as in: s1 - strata(cc, stratanames=ID, size=rep(1, 20), method=srswr) then you will get 1 observation for each ID. Note that it is not important to use with

Re: [R] Random Sample with Unique function

@r-project.org Subject: Re: [R] Random Sample with Unique function In order to use stratified sampling, either try to implement it yourself or use the sampling package and its function strata() as in: s1 - strata(cc, stratanames=ID, size=rep(1, 20), method=srswr) then you will get 1