Correlation matrix for FBM class matrices (big matrices) {pchc}

Correlation matrix for FBM class matrices (big matrices)

Description

Correlation matrix for FBM class matrices (big matrices).

Usage

big_cor(x)

Arguments

x

An FBM class matrix.

Details

The function accepts a Filebacked Big Matrix (FBM) class matrix and returns the correlation matrix. Check you matrix for possible NA values. For more information see the "bigmemory" and "bigstatsr" packages.

Value

The correlation matrix of the big data x.

Author(s)

Michail Tsagris.

R implementation and documentation: Michail Tsagris [e-mail].

See Also

big_read, fedhc.skel, mmhc.skel

Examples

require(bigstatsr, quietly = TRUE)
x <- matrix( runif(100 * 50, 1, 100), ncol = 50 )
x <- bigstatsr::as_FBM(x)
a <- pchc::big_cor(x)