[R] Correlation

[Rui Barradas]

Hello,

If I understand it correctly the following should do it. Note that it 
removes both columns and rows.


idx <- corData > 0.5
diag(idx) <- FALSE
idx2 <- which(apply(idx, 2, function(x) !any(x)))
corData[-idx2, -idx2]


Use corData[, -idx2] to remove only columns.

Hope this helps,

Rui Barradas

On 27/07/2014 12:40, Nico Met wrote:
> Dear all,
>
> I have written the following code for correlation calculations. I want to
> create a new matrix  from corData) with correlation more than 0.5 only and
> the rest of the columns should be removed. How can I do it?
>
>
> set.seed(1234)
> data<-matrix(rnorm(100),nrow=10)
> data[,1]<-100*(data[,2]+data[,5]+data[,9])
> corData<-cor(data)
>
> Thanks a lot
>
> Nico
>
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