This function is used internally to extract the upper triangle of a matrix. It replaces the lower triangle of the input matrix with NA, which is useful when working with symmetrical matrices such as distance or correlation matrices where only the upper triangle is needed.

This function is used internally to extract the upper triangle of a matrix. It replaces the lower triangle of the input matrix with NA, which is useful when working with symmetrical matrices such as distance or correlation matrices where only the upper triangle is needed.

Usage

.get_upper_tri(cormat)

Arguments

cormat

A numeric matrix (e.g., a correlation or distance matrix).

Value

A matrix with NA values in the lower triangle.

Note

This function is for internal use and is not exported.