Re: [R] Conditional Correlation

This question was just answered yesterday in this post: http://r.789695.n4.nabble.com/Correlations-by-subgroups-td3599548.html#a3600553 One solution: x<-c(1,1,1,1,1,2,2,2,2,2) y<-rnorm(10) z<-y+rnorm(10) by(data.frame(y,z),factor(x),cor) HTH, Daniel Mateus Rabello wrote: > > Hi, > How c

[R] Conditional Correlation

Hi, How can I accomplish this in R. Example: I have the following data.frame: data <- data.frame(x=c(1,2,3,4,5,6,5,3,7,1,0,4,8),y=c(1,2,1,2,2,2,1,1,1,2,2,2,2),z=c(5,8,4,3,4,1,6,3,3,6,3,5,7)) Supposing that data$y is a factor, I would like to find the Spearman correlation between data$x and