iblislin/numerl

Numerical Erlang

Numerical Erlang

Efficient matrix math in erlang in the same spirit as NumPy.

Example Usage

An example of the potential future usage of the matrix module in NumErl.

matrix_demo.erl

-module(matrix_demo).

-export([do_it/0]).

do_it() ->
    %% Matrix 3x3 full of ones
    MyMatrix = matrix:ones(3),

    %% Matrix 3x3 identity
    Identity = matrix:identity(3),
   
    %% Transposed ones matrix is in fact equal as expected.
    MyMatrix = matrix:transpose(MyMatrix),

    %% Identity multiplied by MyMatrix gives MyMatrix
    MyMatrix = matrix:multiply(MyMatrix, Identity),

    %% Convert MyMatrix to a tuple of tuples of numbers
    TMatrix = matrix:to_tuples(MyMatrix),

    %% Convert MyMatrix to a list of lists of numbers
    LMatrix = matrix:to_lists(MyMatrix),

    io:format("TMatrix ~p~n", [TMatrix]),
    io:format("LMatrix ~p~n", [LMatrix]),

    ok.