wildcards in user names R stats.

[Mr_Pag]

Hi Folks,

I have a question regarding wildcards in R, could I simplify this following code using control structures? i.e a for statement for (i in 1:n)


yarn1 <- yarn[which(yarn$spinner=='1'),]
yarn2 <- yarn[which(yarn$spinner=='2'),]
yarn3 <- yarn[which(yarn$spinner=='3'),]
...
yarnn <- yarn[which(yarn$spinner=='n'),]


I can't figure out how to directly itegrate wildcards into variable names. I had a look through the R archives, but have had no luck.

Can anyone point me in the direction of a solution, or has a solution?

Thanks in advance,

Alan

[ahmatti]

You can do what you want with the assign command:


for (i in 1:n){
assign(paste('yarn',i,sep=''), yarn[yarn$spinner==i,])
}

[gunksta]

ahmatti beat me to this.

[Mr_Pag]

Thank you, this is a terrific technique to learn. I'm sure it'll be useful for all sorts of things. Many thanks!!

[ahmatti]

You're welcome! There is also the "split" function, which can be used in similar problems as the above code.