Applies the natural logarithm to the data set

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Description

This applies the ln function columnwise to the given input matrix and returns the modified matrix. If necessary, columns undergo a linear translation to ensure that all resulting values are >= 0.

Usage

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Arguments

data_matrix

The original data matrix.

Value

The log-transformed data matrix.

Examples

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data_matrix <- matrix(1:10, dimnames = list(NULL, 'some_val'))
data_matrix
autovarCore:::apply_ln_transformation(data_matrix)

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