The VMatrixD class maintains virtual-matrices where the first dim2 columns are stored, while the last dim2v are virtual, i.e., calculated as needed. Virtual-matrices offer memory reduction for Quadratic, Cubic, and Symbolic Regression, where augmented columns can be calculated rather than stored.
Value parameters
- dim2_
-
the stored second (column) dimension of the matrix
- dim2v
-
the virtual second (column) dimension of the matrix
- dim_
-
the first (row) dimension of the matrix
- formulas
-
the formulas used to calculate the last dim2v columns Array (1, 1) => x1 * x1; Array (1, 2) => x1 * x2
- v_
-
the 2D array used to store matrix the first dim2_ columns
Attributes
- See also
-
scalation.modeling.SymbolicRegression
- Companion
- object
- Graph
-
- Supertypes
Members list
Value members
Concrete methods
Multiply this virtual-matrix by matrix y (requires y to have at least the dimensions of this). FIX - to be optimized, needs to handle case of y being a virtual matrix
Multiply this virtual-matrix by matrix y (requires y to have at least the dimensions of this). FIX - to be optimized, needs to handle case of y being a virtual matrix
Value parameters
- y
-
the other matrix
Attributes
- Definition Classes
Multiply this virtual-matrix by vector y (requires y to have at least the dimensions of this).
Multiply this virtual-matrix by vector y (requires y to have at least the dimensions of this).
Value parameters
- y
-
the vector to multiple by
Attributes
- Definition Classes
Return the ELEMENT in row i, column j of this virtual-matrix. usage: x(3, 2)
Return the ELEMENT in row i, column j of this virtual-matrix. usage: x(3, 2)
Value parameters
- i
-
the row index
- j
-
the column index
Attributes
- Definition Classes
Multiply the transpose this virtual-matrix by itself, e.g., X^T X.
Multiply the transpose this virtual-matrix by itself, e.g., X^T X.
Attributes
Multiply the transpose this virtual-matrix by vector y, e.g., X^T y.
Multiply the transpose this virtual-matrix by vector y, e.g., X^T y.
Value parameters
- y
-
the vector to multiply by
Attributes
Inherited methods
Multiply this matrix and scaler u.
Multiply this matrix and scaler u.
Value parameters
- u
-
the scalar to multiply by
Attributes
- Inherited from:
- MatrixD
Multiply (row) vector y by this matrix. Note '*:' is right associative. vector = vector *: matrix
Multiply (row) vector y by this matrix. Note '*:' is right associative. vector = vector *: matrix
Value parameters
- y
-
the vector to multiply by
Attributes
- Inherited from:
- MatrixD
Multiply (in-place) this matrix and scaler u.
Multiply (in-place) this matrix and scaler u.
Value parameters
- u
-
the scalar to multiply by
Attributes
- Inherited from:
- MatrixD
Multiply this matrix by vector u to produce another matrix v_ij * u_j. E.g., multiply a matrix by a diagonal matrix represented as a vector.
Multiply this matrix by vector u to produce another matrix v_ij * u_j. E.g., multiply a matrix by a diagonal matrix represented as a vector.
Value parameters
- u
-
the vector to multiply by
Attributes
- Inherited from:
- MatrixD
Multiply element-wise, this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting. Also known as Hadamard product.
Multiply element-wise, this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting. Also known as Hadamard product.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Multiply vector u by this matrix to produce another matrix u_i * v_ij. E.g., multiply a diagonal matrix represented as a vector by a matrix. This operator is right associative (vector *~: matrix).
Multiply vector u by this matrix to produce another matrix u_i * v_ij. E.g., multiply a diagonal matrix represented as a vector by a matrix. This operator is right associative (vector *~: matrix).
Value parameters
- u
-
the vector to multiply by
Attributes
- Inherited from:
- MatrixD
Add this matrix and scaler u.
Add this matrix and scaler u.
Value parameters
- u
-
the scalar to add
Attributes
- Inherited from:
- MatrixD
Add this matrix and (row) vector u.
Add this matrix and (row) vector u.
Value parameters
- u
-
the vector to add
Attributes
- Inherited from:
- MatrixD
Add this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Add this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Concatenate (row-wise) this matrix and matrix y (requires y to have the same column dimension as this).
Concatenate (row-wise) this matrix and matrix y (requires y to have the same column dimension as this).
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Concatenate (column-wise) this matrix and matrix y (requires y to have the same row dimension as this).
Concatenate (column-wise) this matrix and matrix y (requires y to have the same row dimension as this).
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Concatenate (row) vector u and this matrix, i.e., prepend u to this.
Concatenate (row) vector u and this matrix, i.e., prepend u to this.
Value parameters
- u
-
the vector to be prepended as the new first row in new matrix
Attributes
- Inherited from:
- MatrixD
Add (in-place) this matrix and scaler u.
Add (in-place) this matrix and scaler u.
Value parameters
- u
-
the scalar to add
Attributes
- Inherited from:
- MatrixD
Add (in-place) this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Add (in-place) this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Add this matrix and (column) vector u.
Add this matrix and (column) vector u.
Value parameters
- u
-
the vector to add
Attributes
- Inherited from:
- MatrixD
Concatenate (column) vector u and this matrix, i.e., prepend u to this.
Concatenate (column) vector u and this matrix, i.e., prepend u to this.
Value parameters
- u
-
the vector to be prepended as the new first column in new matrix
Attributes
- Inherited from:
- MatrixD
Subtract from this matrix, the scalar u.
Subtract from this matrix, the scalar u.
Value parameters
- u
-
the scalar to subtract
Attributes
- Inherited from:
- MatrixD
Subtract from this matrix, the (row) vector u.
Subtract from this matrix, the (row) vector u.
Value parameters
- u
-
the vector to subtract
Attributes
- Inherited from:
- MatrixD
Subtract from this matrix the matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Subtract from this matrix the matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Subtract (in-place) from this matrix, the scalar u.
Subtract (in-place) from this matrix, the scalar u.
Value parameters
- u
-
the scalar to subtract
Attributes
- Inherited from:
- MatrixD
Subtract (in-place) from this matrix the matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Subtract (in-place) from this matrix the matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Subtract from this matrix, the (column) vector u.
Subtract from this matrix, the (column) vector u.
Value parameters
- u
-
the vector to subtract
Attributes
- Inherited from:
- MatrixD
Divide element-wise this matrix by scaler u.
Divide element-wise this matrix by scaler u.
Value parameters
- u
-
the scalar to divide by
Attributes
- Inherited from:
- MatrixD
Divide element-wise, this matrix by (row) vector u.
Divide element-wise, this matrix by (row) vector u.
Value parameters
- u
-
the vector to divide by
Attributes
- Inherited from:
- MatrixD
Divide element-wise, this matrix by matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Divide element-wise, this matrix by matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Divide (in-place) element-wise this matrix by scaler u.
Divide (in-place) element-wise this matrix by scaler u.
Value parameters
- u
-
the scalar to divide by
Attributes
- Inherited from:
- MatrixD
Solve for x using back substitution (/~) in the equation u * x = y where this matrix (u) must be upper triangular.
Solve for x using back substitution (/~) in the equation u * x = y where this matrix (u) must be upper triangular.
Value parameters
- y
-
the constant vector
Attributes
- See also
-
MatLab's / operator
- Inherited from:
- MatrixD
Concatenate this matrix and (row) vector u, i.e., append u to this.
Concatenate this matrix and (row) vector u, i.e., append u to this.
Value parameters
- u
-
the vector to be appended as the new last row in new matrix
Attributes
- Inherited from:
- MatrixD
Concatenate this matrix and (column) vector u, i.e., append u to this.
Concatenate this matrix and (column) vector u, i.e., append u to this.
Value parameters
- u
-
the vector to be appended as the new last column in new matrix
Attributes
- Inherited from:
- MatrixD
Determine whether this matrix and matrix y are nearly equal.
Determine whether this matrix and matrix y are nearly equal.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Return the main DIAGONAL of this matrix as a new independent vector. usage: x(?)
Return the main DIAGONAL of this matrix as a new independent vector. usage: x(?)
Value parameters
- diag
-
use the all diagonal elements indicator ?
Attributes
- Inherited from:
- MatrixD
Return the COLUMNS in index sequence jdx of this matrix as a new independent matrix. usage: x(?, Array (2, 4, 6))
Return the COLUMNS in index sequence jdx of this matrix as a new independent matrix. usage: x(?, Array (2, 4, 6))
Value parameters
- all
-
use the all rows indicator ?
- jdx
-
the index set of columns to return
Attributes
- Inherited from:
- MatrixD
Return the COLUMNS in index set jset of this matrix as a new independent matrix. usage: x(?, Set (2, 4, 6))
Return the COLUMNS in index set jset of this matrix as a new independent matrix. usage: x(?, Set (2, 4, 6))
Value parameters
- all
-
use the all rows indicator ?
- jset
-
the index set of columns to return
Attributes
- Inherited from:
- MatrixD
Return the COLUMNS in range jr of this matrix as a new independent matrix. usage: x(?, 2 to 4)
Return the COLUMNS in range jr of this matrix as a new independent matrix. usage: x(?, 2 to 4)
Value parameters
- all
-
use the all rows indicator ?
- jr
-
the index range of columns to return
Attributes
- Inherited from:
- MatrixD
Return the j-th COLUMN of this matrix as an independent vector. usage: x(?, 2)
Return the j-th COLUMN of this matrix as an independent vector. usage: x(?, 2)
Value parameters
- all
-
use the all rows indicator ?
- j
-
the column index
Attributes
- Inherited from:
- MatrixD
Return the ROWS in index sequence idx of this matrix as a new independent matrix. usage: x(Array (3, 5, 7))
Return the ROWS in index sequence idx of this matrix as a new independent matrix. usage: x(Array (3, 5, 7))
Value parameters
- idx
-
the index sequence of rows to return
Attributes
- Inherited from:
- MatrixD
Return the ROWS in index set iset of this matrix as a new independent matrix. usage: x(Set (3, 5, 7))
Return the ROWS in index set iset of this matrix as a new independent matrix. usage: x(Set (3, 5, 7))
Value parameters
- iset
-
the index set of rows to return
Attributes
- Inherited from:
- MatrixD
Return the ROWS in range ir of this matrix for column j as a vector. usage: x(3 to 6)
Return the ROWS in range ir of this matrix for column j as a vector. usage: x(3 to 6)
Value parameters
- ir
-
the index range of rows to return
- j
-
the column index
Attributes
- Inherited from:
- MatrixD
Return the ROWS in range ir of this matrix as a new independent matrix. usage: x(3 to 6)
Return the ROWS in range ir of this matrix as a new independent matrix. usage: x(3 to 6)
Value parameters
- ir
-
the index range of rows to return
Attributes
- Inherited from:
- MatrixD
Return the actual i-th ROW of this matrix. usage: x(3)
Return the actual i-th ROW of this matrix. usage: x(3)
Value parameters
- i
-
the row index
Attributes
- Inherited from:
- MatrixD
Return the intersection of the ROWS in range ir and COLUMNS in range jr of this matrix as a new independent matrix. usage: x(3 to 6, 2 to 4)
Return the intersection of the ROWS in range ir and COLUMNS in range jr of this matrix as a new independent matrix. usage: x(3 to 6, 2 to 4)
Value parameters
- ir
-
the index range of rows to return
- jr
-
the index range of columns to return
Attributes
- Inherited from:
- MatrixD
Center this matrix to zero mean, column-wise, by subtracting the mean.
Center this matrix to zero mean, column-wise, by subtracting the mean.
Value parameters
- mu_x
-
the vector of column means for this matrix
Attributes
- Inherited from:
- MatrixD
Get column col from the matrix, returning it as a vector.
Get column col from the matrix, returning it as a vector.
Value parameters
- col
-
the column to extract from the matrix
- from
-
the position to start extracting from
Attributes
- Inherited from:
- MatrixD
Return a deep copy of this matrix (note: clone may not be deep). Uses Java's native Arrays.copyOf for efficient copying of 2D array.
Return a deep copy of this matrix (note: clone may not be deep). Uses Java's native Arrays.copyOf for efficient copying of 2D array.
Attributes
- Inherited from:
- MatrixD
Return the correlation vector for the columns of this matrix with vector y.
Return the correlation vector for the columns of this matrix with vector y.
Value parameters
- skip
-
the number of initial columns to skip (e.g., first column of all ones)
- y
-
the vector to compute correlations with
Attributes
- Inherited from:
- MatrixD
Return the correlation matrix for the columns of this matrix. If either variance is zero (column i, column j), will result in Not-a-Number (NaN), return one if the vectors are the same, or -0 (indicating undefined). Note: sample vs. population results in essentially the same values.
Return the correlation matrix for the columns of this matrix. If either variance is zero (column i, column j), will result in Not-a-Number (NaN), return one if the vectors are the same, or -0 (indicating undefined). Note: sample vs. population results in essentially the same values.
Attributes
- See also
-
the related cos function
- Inherited from:
- MatrixD
Return the cosine similarity matrix for the columns of matrix 'x'. If the vectors are centered, will give the correlation.
Return the cosine similarity matrix for the columns of matrix 'x'. If the vectors are centered, will give the correlation.
Attributes
- See also
-
stats.stackexchange.com/questions/97051/] building-the-connection-between-cosine-similarity-and-correlation-in-r
- Inherited from:
- MatrixD
Return the sample covariance matrix for the columns of this matrix.
Return the sample covariance matrix for the columns of this matrix.
Attributes
- Inherited from:
- MatrixD
Return the population covariance matrix for the columns of this matrix.
Return the population covariance matrix for the columns of this matrix.
Attributes
- Inherited from:
- MatrixD
Multiply each column of this matrix by its other columns to forms a matrix consisting of all 2-way cross terms [ x_i * x_j ] for j < i.
Multiply each column of this matrix by its other columns to forms a matrix consisting of all 2-way cross terms [ x_i * x_j ] for j < i.
Attributes
- Inherited from:
- MatrixD
Multiply each column of this matrix by its other two columns to forms a matrix consisting of all 3-way cross terms [ x_i * x_j * x_k ] for k < j < i.
Multiply each column of this matrix by its other two columns to forms a matrix consisting of all 3-way cross terms [ x_i * x_j * x_k ] for k < j < i.
Attributes
- Inherited from:
- MatrixD
Combine this matrix with matrix b, placing them along the diagonal and filling in the bottom left and top right regions with zeros; [this, b].
Combine this matrix with matrix b, placing them along the diagonal and filling in the bottom left and top right regions with zeros; [this, b].
Value parameters
- b
-
the matrix to combine with this matrix
Attributes
- Inherited from:
- MatrixD
Return the row and column dimensions of this matrix.
Return the dot product of this matrix and vector y.
Return the dot product of this matrix and vector y.
Value parameters
- y
-
the vector to take the dot product with
Attributes
- Inherited from:
- MatrixD
Return the dot product of this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting, use tiling/blocking, and use array ops.
Return the dot product of this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting, use tiling/blocking, and use array ops.
Value parameters
- y
-
the other matrix
Attributes
- See also
-
en.wikipedia.org/wiki/Matrix_multiplication_algorithm
- Inherited from:
- MatrixD
Flatten this matrix in row-major fashion, returning a vector containing all the elements from the matrix.
Flatten this matrix in row-major fashion, returning a vector containing all the elements from the matrix.
Attributes
- Inherited from:
- MatrixD
Insert vector u into this matrix at j-th COLUMN after shifting j ... k-1 right.
Insert vector u into this matrix at j-th COLUMN after shifting j ... k-1 right.
Value parameters
- j
-
the start column index [... j ... k k+1 ... ] -->
- k
-
the end column index [... u j ... k+1 ... ]
- u
-
the vector to insert into column j
Attributes
- Inherited from:
- MatrixD
Return the inverse of this matrix using the inverse method in the Fac_LU object. Note, other factorizations also compute the inverse.
Return the inverse of this matrix using the inverse method in the Fac_LU object. Note, other factorizations also compute the inverse.
Attributes
- See also
-
Fac_Inv,Fac_Cholesky,Fac-QR. - Inherited from:
- MatrixD
Return whether this matrix is non-negative (has no elements less than 0).
Return whether this matrix is non-negative (has no elements less than 0).
Attributes
- Inherited from:
- MatrixD
Return whether this matrix is symmetric (i.e, equals its transpose).
Return whether this matrix is symmetric (i.e, equals its transpose).
Attributes
- Inherited from:
- MatrixD
Return the dim-by-dim2 lower triangle of this matrix (rest are zero).
Return the dim-by-dim2 lower triangle of this matrix (rest are zero).
Attributes
- Inherited from:
- MatrixD
Map each row of this matrix by applying function f to each row vector and returning the collected result as a vector.
Map each row of this matrix by applying function f to each row vector and returning the collected result as a vector.
Value parameters
- f
-
the vector to scalar function to apply
Attributes
- Inherited from:
- MatrixD
Return the maximum value for each column in the matrix.
Compute the column means of this matrix.
Return the minimum value for each column in the matrix.
Map each row of this matrix by applying function f to each row vector and returning the collected result as a matrix.
Map each row of this matrix by applying function f to each row vector and returning the collected result as a matrix.
Value parameters
- f
-
the vector to vector function to apply
Attributes
- Inherited from:
- MatrixD
Return the maximum value for the entire matrix.
Return the minimum value for the entire matrix.
Multiply this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting, transpose y first and use array ops. A simpler, less efficient version of '*'.
Multiply this matrix and matrix y (requires y to have at least the dimensions of this). Alias rows to avoid double subscripting, transpose y first and use array ops. A simpler, less efficient version of '*'.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Compute the 1-norm of this matrix, i.e., the maximum 1-norm of the column vectors. This is useful for comparing matrices (a - b).norm1.
Compute the 1-norm of this matrix, i.e., the maximum 1-norm of the column vectors. This is useful for comparing matrices (a - b).norm1.
Attributes
- See also
-
en.wikipedia.org/wiki/Matrix_norm
- Inherited from:
- MatrixD
Compute the Frobenius-norm of 'this' matrix, i.e., the square root of the sum of the squared values over all the elements (sqrt (sse)).
Compute the Frobenius-norm of 'this' matrix, i.e., the square root of the sum of the squared values over all the elements (sqrt (sse)).
Attributes
- See also
-
en.wikipedia.org/wiki/Matrix_norm#Frobenius_norm
- Inherited from:
- MatrixD
Compute the square of the Frobenius-norm of this matrix, i.e., the sum of the squared values over all the elements (sse).
Compute the square of the Frobenius-norm of this matrix, i.e., the sum of the squared values over all the elements (sse).
Attributes
- Inherited from:
- MatrixD
Return all but the j-th COLUMN of this matrix as a new independent matrix.. usage: x.not(?, 2)
Return all but the j-th COLUMN of this matrix as a new independent matrix.. usage: x.not(?, 2)
Value parameters
- all
-
use the all rows indicator ?
- j
-
the column index to exclude
Attributes
- Inherited from:
- MatrixD
Return all but the ROWS in index sequence idx of this matrix as a new independent matrix. usage: x.not(Array (3, 5, 7))
Return all but the ROWS in index sequence idx of this matrix as a new independent matrix. usage: x.not(Array (3, 5, 7))
Value parameters
- idx
-
the index sequence of rows to exclude
Attributes
- Inherited from:
- MatrixD
Return all but the i-th ROW of this matrix as a new independent matrix. usage: x.not(3)
Return all but the i-th ROW of this matrix as a new independent matrix. usage: x.not(3)
Value parameters
- i
-
the row index to exclude
Attributes
- Inherited from:
- MatrixD
Return a matrix that is in the reverse row order of this matrix.
Set this matrix's i-th ROW to the elements in vector u. May have left-over elements in row unassigned.
Set this matrix's i-th ROW to the elements in vector u. May have left-over elements in row unassigned.
Value parameters
- i
-
the row index
- u
-
the vector value to assign
Attributes
- Inherited from:
- MatrixD
Set all the elements of this ENTIRE matrix to the scalar s.
Set all the elements of this ENTIRE matrix to the scalar s.
Value parameters
- s
-
the scalar value to assign
Attributes
- Inherited from:
- MatrixD
Set all the elements in the j-th COLUMN of this matrix to the scalar s.
Set all the elements in the j-th COLUMN of this matrix to the scalar s.
Value parameters
- j
-
the column index
- s
-
the scalar value to assign
Attributes
- Inherited from:
- MatrixD
Set the k-th DIAGONAL of this matrix to the elements in vector u.
Set the k-th DIAGONAL of this matrix to the elements in vector u.
Value parameters
- k
-
how far above the main diagonal, e.g., (-1, 0, 1) for (sub, main, super)
- u
-
the vector to set the diagonal to
Attributes
- Inherited from:
- MatrixD
Show how this matrix and matrix y differ, the first element and row that differ.
Show how this matrix and matrix y differ, the first element and row that differ.
Value parameters
- y
-
the other matrix
Attributes
- Inherited from:
- MatrixD
Split the rows from this matrix to form two matrices: one from the rows in idx (e.g., testing set) and the other from rows not in idx (e.g., training set). Note split and split_ produce different row orders.
Split the rows from this matrix to form two matrices: one from the rows in idx (e.g., testing set) and the other from rows not in idx (e.g., training set). Note split and split_ produce different row orders.
Value parameters
- idx
-
the set of row indices to include/exclude
Attributes
- Inherited from:
- MatrixD
Split the rows from this matrix to form two matrices: one from the rows in idx (e.g., testing set) and the other from rows not in idx (e.g., training set). Concise, but less efficient than split.
Split the rows from this matrix to form two matrices: one from the rows in idx (e.g., testing set) and the other from rows not in idx (e.g., training set). Concise, but less efficient than split.
Value parameters
- idx
-
the row indices to include/exclude
Attributes
- Inherited from:
- MatrixD
Compute the column standard deviations of this matrix.
Compute the sum of this matrix, i.e., the sum of all its elements.
Compute the sum of this matrix, i.e., the sum of all its elements.
Attributes
- Inherited from:
- MatrixD
Compute the column sums of this matrix, i.e., the sums for each of its columns.
Compute the column sums of this matrix, i.e., the sums for each of its columns.
Attributes
- Inherited from:
- MatrixD
Compute the row sums of this matrix, i.e., the sums for each of its rows.
Compute the row sums of this matrix, i.e., the sums for each of its rows.
Attributes
- Inherited from:
- MatrixD
Swap (in-place) the elements in rows i and k starting from column col.
Swap (in-place) the elements in rows i and k starting from column col.
Value parameters
- col
-
the starting column for the swap
- i
-
the first row in the swap
- k
-
the second row in the swap
Attributes
- Inherited from:
- MatrixD
Swap (in-place) rows i and k in this matrix.
Swap (in-place) rows i and k in this matrix.
Value parameters
- i
-
the first row in the swap
- k
-
the second row in the swap
Attributes
- Inherited from:
- MatrixD
Swap (in-place) columns j and l in this matrix.
Swap (in-place) columns j and l in this matrix.
Value parameters
- j
-
the first column in the swap
- l
-
the second column in the swap
Attributes
- Inherited from:
- MatrixD
Convert this matrix to a matrix where all the elements have integer values.
Convert this matrix to a matrix where all the elements have integer values.
Attributes
- Inherited from:
- MatrixD
Compute the trace of this matrix, i.e., the sum of the elements on the main diagonal. Should also equal the sum of the eigenvalues.
Compute the trace of this matrix, i.e., the sum of the elements on the main diagonal. Should also equal the sum of the eigenvalues.
Attributes
- See also
-
Eigen.scala
- Inherited from:
- MatrixD
Transpose this matrix (swap columns <=> rows). Note: new MatrixD (dim2, dim, v.transpose) does not work when a dimension is 0.
Transpose this matrix (swap columns <=> rows). Note: new MatrixD (dim2, dim, v.transpose) does not work when a dimension is 0.
Attributes
- Inherited from:
- MatrixD
Return the negative of this matrix (unary minus).
Update the main DIAGONAL of this matrix according to the given vector. usage: x(?, ?) = u
Update the main DIAGONAL of this matrix according to the given vector. usage: x(?, ?) = u
Value parameters
- d1
-
use the all diagonal elements indicator ?
- d2
-
use the all diagonal elements indicator ?
- u
-
the vector to assign
Attributes
- Inherited from:
- MatrixD
Update the main DIAGONAL of this matrix according to the given scalar. usage: x(?, ?) = 5
Update the main DIAGONAL of this matrix according to the given scalar. usage: x(?, ?) = 5
Value parameters
- d1
-
use the all diagonal elements indicator ?
- d2
-
use the all diagonal elements indicator ?
- s
-
the scalar value to assign
Attributes
- Inherited from:
- MatrixD
Update the elements in the j-th COLUMN of this matrix. usage: x(?, 2) = u
Update the elements in the j-th COLUMN of this matrix. usage: x(?, 2) = u
Value parameters
- all
-
use the all rows indicator ?
- j
-
the column index
- u
-
the vector to assign
Attributes
- Inherited from:
- MatrixD
Update the elements in the i-th ROW of this matrix. usage: x(i) = u
Update the elements in the i-th ROW of this matrix. usage: x(i) = u
Value parameters
- i
-
the row index
- u
-
the vector to assign
Attributes
- Inherited from:
- MatrixD
Update the ELEMENT in row i, column j of this matrix. usage: x(i, j) = 5
Update the ELEMENT in row i, column j of this matrix. usage: x(i, j) = 5
Value parameters
- i
-
the row index
- j
-
the column index
- s
-
the scalar value to assign
Attributes
- Inherited from:
- MatrixD
Return the dim2-by-dim2 upper triangle of this matrix (rest are zero).
Return the dim2-by-dim2 upper triangle of this matrix (rest are zero).
Attributes
- Inherited from:
- MatrixD
Compute the column variances of this matrix.
Write this matrix to a CSV-formatted text file with name fileName.
Write this matrix to a CSV-formatted text file with name fileName.
Value parameters
- fileName
-
the name of file to hold the data
Attributes
- Inherited from:
- MatrixD
Raise the elements in this matrix to the p-th power (e.g., x~^2 = x *~ x) Being element-wise, x~^2 is not x * x.
Raise the elements in this matrix to the p-th power (e.g., x~^2 = x *~ x) Being element-wise, x~^2 is not x * x.
Value parameters
- p
-
the scalar power
Attributes
- Inherited from:
- MatrixD
Raise this matrix to the p-th power (for some integer p >= 1) using a divide and conquer algorithm and matrix multiplication (x~^^2 = x * x).
Raise this matrix to the p-th power (for some integer p >= 1) using a divide and conquer algorithm and matrix multiplication (x~^^2 = x * x).
Value parameters
- p
-
the power to raise this matrix to
Attributes
- Inherited from:
- MatrixD