chain_letter_tree, a MATLAB code which analyzes a similarity matrix for 11 versions of a single chain letter and produces a dendrogram or tree diagram that suggests the degrees of relatedness and the evolutionary history of the letters.


The computer code and data files described and made available on this web page are distributed under the MIT license


chain_letter_tree is available in a MATLAB version.

Related Data and Programs:

chain_letters, a dataset directory which contains several examples of chain letters.

distance_to_position, a MATLAB code which estimates the positions of cities based on a city-to-city distance table.

Source Code:

Examples and Data:

Last revised on 22 January 2014.