Is there a limit on working with matrix in R with Rcpp?

Question

I was trying to develop a program in R to estimate a Spearman correlation with Rcpp. I did it, but it only works with matrix with less of a range between 45 00 - 50 000 vectors.

Answer 1

To repeat more succintly:

1. You can have more than 2^31-1 elements in a vector.

2. Matrices are vectors with dim attributes.

3. You can have more than 2^31-1 elements in a matrix (ie n times k)

4. Your row and column index are still limited to 2^31.

Example of a big vector:

R> n <- .Machine$integer.max + 100
R> tmpVec <- 1:n
R> length(tmpVec)
[1] 2147483747
R> newVec <- sqrt(tmpVec)
R>