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java.lang.Objectorg.encog.mathutil.matrices.MatrixMath
public final class MatrixMath
This class can perform many different mathematical operations on matrixes. The matrixes passed in will not be modified, rather a new matrix, with the operation performed, will be returned.
Method Summary | |
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static Matrix |
add(Matrix a,
Matrix b)
Add two matrixes. |
static void |
copy(Matrix source,
Matrix target)
Copy from one matrix to another. |
static Matrix |
deleteCol(Matrix matrix,
int deleted)
Delete one column from the matrix. |
static Matrix |
deleteRow(Matrix matrix,
int deleted)
Delete a row from the matrix. |
static double |
determinant(Matrix m)
|
static Matrix |
divide(Matrix a,
double b)
Return a matrix with each cell divided by the specified value. |
static double |
dotProduct(Matrix a,
Matrix b)
Compute the dot product for the two matrixes. |
static Matrix |
identity(int size)
Return an identity matrix of the specified size. |
static Matrix |
multiply(Matrix a,
double b)
Return the result of multiplying every cell in the matrix by the specified value. |
static double[] |
multiply(Matrix a,
double[] d)
|
static Matrix |
multiply(Matrix a,
Matrix b)
Return the product of the first and second matrix. |
static Matrix |
subtract(Matrix a,
Matrix b)
Return the results of subtracting one matrix from another. |
static Matrix |
transpose(Matrix input)
Return the transposition of a matrix. |
static double |
vectorLength(Matrix input)
Calculate the length of a vector. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static Matrix add(Matrix a, Matrix b)
a
- The first matrix to add.b
- The second matrix to add.
public static void copy(Matrix source, Matrix target)
source
- The source matrix for the copy.target
- The target matrix for the copy.public static Matrix deleteCol(Matrix matrix, int deleted)
matrix
- The matrix.deleted
- The column to delete.
public static Matrix deleteRow(Matrix matrix, int deleted)
matrix
- The matrix.deleted
- Which row to delete.
public static Matrix divide(Matrix a, double b)
a
- The matrix to divide.b
- The value to divide by.
public static double dotProduct(Matrix a, Matrix b)
a
- The first matrix.b
- The second matrix.
public static Matrix identity(int size)
size
- The number of rows and columns to create. An identity matrix
is always square.
public static Matrix multiply(Matrix a, double b)
a
- The first matrix.b
- The second matrix.
public static Matrix multiply(Matrix a, Matrix b)
a
- The first matrix.b
- The second matrix.
public static Matrix subtract(Matrix a, Matrix b)
a
- The first matrix.b
- The second matrix.
public static Matrix transpose(Matrix input)
input
- The matrix to transpose.
public static double vectorLength(Matrix input)
input
- The matrix to calculate the length of.
public static double determinant(Matrix m)
public static double[] multiply(Matrix a, double[] d)
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