grantham_distances_matrix {grantham}

Grantham distance matrix

Description

A dataset containing Grantham distances in the format of a matrix. These values were obtained from Table 2, Grantham (1974), doi:10.1126/science.185.4154.862.

Usage

grantham_distances_matrix

Format

An object of class matrix (inherits from array) with 20 rows and 20 columns.

Source

Table 2, Grantham (1974), doi:10.1126/science.185.4154.862.

Examples

grantham_distances_matrix