Module matrix_functions

Modules

read_write

Functions

diag

This function can be used in two distinct ways.

eye_double_input

Returns the identity matrix, specifying the number of rows and columns separately.

eye_single_input

Returns an identity matrix. If argument is a single number, then the output is a square matrix. The argument can also be an array specifying the dimensions separately.

flatten

Returns the contents of a multidimensional array as a 1-D array.

fliplr

Flip a matrix left-to-right

flipud

Flip a matrix up-down

hessenberg

Calculates the QR decomposition of a matrix

horzcat

Concatenate two arrays horizontally.

invert_matrix

Calculates the inverse of a matrix. Fails if the matrix if not invertible, or if the elements of the matrix aren’t FLOAT or INT.

linspace

Returns an array containing a number of elements linearly spaced between two bounds.

logspace

Returns an array containing a number of elements logarithmically spaced between two bounds.

matrix_eigs_alt

Calculate the eigenvalues and eigenvectors for a matrix. Specifically, the output is an object map with entries for real_eigenvalues, imaginary_eigenvalues, eigenvectors, and residuals.

matrix_size_by_reference

Returns an array indicating the size of the matrix along each dimension, passed by reference.

meshgrid

Returns an object map containing 2-D grid coordinates based on the uni-axial coordinates contained in arguments x and y.

mtimes

Perform matrix multiplication.

ndims_by_reference

Return the number of dimensions in matrix, passed by reference.

nnz_by_reference

Returns the number of non-zero elements in a matrix, passed by reference.

numel_by_reference

Returns the number of elements in a matrix, passed by reference.

ones_double_input

Return a matrix of ones. Arguments indicate the number of rows and columns in the matrix.

ones_single_input

Return a matrix of ones. Can be called with a single integer argument (indicating the square matrix of that size) or with an array argument (indicating the size for each dimension).

qr_decomp

Calculates the QR decomposition of a matrix

rand_double_input

Return a matrix of random values, each between zero and one. Arguments indicate the number of rows and columns in the matrix.

rand_single_input

Returns a matrix of random values, each between zero and one. Can be called with a single integer argument (indicating the square matrix of that size) or with an array argument (indicating the size for each dimension).

repmat

Repeats copies of a matrix

rot90_ktimes

Rotate a matrix counterclockwise k times

rot90_once

Rotate a matrix counterclockwise once

svd_decomp

Calculates the singular value decomposition of a matrix

transpose

Transposes a matrix.

vertcat

Concatenates two array vertically.

zeros_double_input

Return a matrix of zeros. Arguments indicate the number of rows and columns in the matrix.

zeros_single_input

Return a matrix of zeros. Can be called with a single integer argument (indicating the square matrix of that size) or with an array argument (indicating the size for each dimension).