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widyr (version 0.1.5)

cor_sparse: Find the Pearson correlation of a sparse matrix efficiently

Description

Find the Pearson correlation of a sparse matrix. For large sparse matrix this is more efficient in time and memory than cor(as.matrix(x)). Note that it does not currently work on simple_triplet_matrix objects.

Usage

cor_sparse(x)

Arguments

x

A matrix, potentially a sparse matrix such as a "dgTMatrix" object