Matrix class

The class for (1,1) tensor of rank 2 (matrix)

Constructors:

Matrix({int n, int m, int? seed}) /// create n⨯m matrix with He-Normal initialized values

Matrix.column(List<double> column) /// create [column.length]⨯1 column-vector matrix

Matrix.row(List<double> row) /// create 1⨯[column.length] row-vector matrix

Matrix.fromLists(List<List<double>> matrix) /// create matrix from given values in the [matrix]

Matrix.zero({int n, int m}) /// create n⨯m matrix full of zeros

Matrix.identity({int order}) /// create [order]⨯[order] identity square matrix

Matrix.diag({List<double> diag}) /// create [diag.length]⨯[diag.length] square matrix with diagonal elements from [diag]

Matrix.reshapeFromList(List<double> data, {int n, int m}) /// create n⨯m matrix from [data] filled by rows

Constructors

Matrix({required int n, required int m, int? seed})

Matrix.column(List<double> column)

Matrix.diag({required List<double> diag})

Matrix.fromLists(List<List<double>> matrix)

Matrix.identity({required int order})

Matrix.reshapeFromList(List<double> data, {required int n, required int m})

Matrix.row(List<double> row)

Matrix.zero({required int n, required int m})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

isVector → bool

Returns true if Matrix is column-vector or row-vector

no setter

m ↔ int

The column count

late, final

matrix → List<List<double>>

The List<List<double>> representation of matrix

no setter

n ↔ int

The row count

late, final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

T → Matrix

The transposed matrix of this

no setter

Methods

addedScalar(double scalar) → Matrix

Return copy of this with added scalar to every element

addScalar(double scalar) → void

Add scalar to every element of this

apply(double function(double)) → Matrix

Return a copy of this where function was applied to every element

flattenColumn() → Matrix

Return Matrix.column with all elements of this taken by rows

flattenList() → List<double>

Return List with all elements of this taken by rows

flattenRow() → Matrix

Return Matrix.row with all elements of this taken by rows

getColumn(int index) → Matrix

Return Matrix.column of index column of this

getRow(int index) → Matrix

Return Matrix.row of index row of this

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

reduceMean() → double

Return mean of all elements of this

reduceMeanByAxis(int axis) → Matrix

Return Matrix.column of means of the elements of this reduced by rows (if axis is 0) or columns (if axis is 1)

reduceSum() → double

Return sum of all elements of this

reduceSumByAxis(int axis) → Matrix

Return Matrix.column of sums of the elements of this reduced by rows (if axis is 0) or columns (if axis is 1)

scale(double scalar) → void

Scale every element of this by scalar

scaled(double scalar) → Matrix

Return copy of this with scaled elements by scalar

toString() → String

A string representation of this object.

override

Operators

operator %(Matrix other) → Matrix

Matrices Hadamard product operator

operator *(Matrix other) → Matrix

Matrices multiplication operator

operator +(Matrix other) → Matrix

Matrices elementwise addition operator

operator -(Matrix other) → Matrix

Matrices elementwise subtraction operator

operator ==(Object other) → bool

The equality operator.

inherited

operator [](int index) → List<double>

operator unary-() → Matrix

Negative matrix operator