InvertibleMatrix (HM Gears 0.10.7 API)

java.lang.Object
- org.hortonmachine.gears.utils.math.matrixes.Matrix
- - org.hortonmachine.gears.utils.math.matrixes.SquareMatrix
  - - org.hortonmachine.gears.utils.math.matrixes.LinearSystem
    - - org.hortonmachine.gears.utils.math.matrixes.InvertibleMatrix

```
public class InvertibleMatrix
extends LinearSystem
```
From: Java Number Cruncher The Java Programmer's Guide to Numerical Computation by Ronald Mak A matrix that can be inverted. Also, compute its determinant, norm, and condition number.

Field Summary
- Fields inherited from class org.hortonmachine.gears.utils.math.matrixes.LinearSystem
  exchangeCount, LU, permutation
- Fields inherited from class org.hortonmachine.gears.utils.math.matrixes.Matrix
  nCols, nRows, values

Constructor Summary

Constructors
Constructor Description

InvertibleMatrix(double[][] values)
Constructor.

InvertibleMatrix(int n)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`condition()`	Compute the condition number based on the Euclidean norm.
`double`	`determinant()`	Compute the determinant.
`InvertibleMatrix`	`inverse()`	Compute the inverse of this matrix.
`double`	`norm()`	Compute the Euclidean norm of this matrix.

Methods inherited from class org.hortonmachine.gears.utils.math.matrixes.LinearSystem
decompose, reset, set, set, setColumn, setRow, solve

Methods inherited from class org.hortonmachine.gears.utils.math.matrixes.SquareMatrix
add, multiply, subtract

Methods inherited from class org.hortonmachine.gears.utils.math.matrixes.Matrix
add, at, columnCount, copyValues2D, getColumn, getRow, multiply, multiply, multiply, multiply, rowCount, subtract, transpose, values

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - InvertibleMatrix
```
public InvertibleMatrix(int n)
```
    Constructor.
    
    Parameters:
    
    n - the number of rows = the number of columns
  - InvertibleMatrix
```
public InvertibleMatrix(double[][] values)
```
    Constructor.
    
    Parameters:
    
    values - the array of values
- Method Detail
  - inverse
```
public InvertibleMatrix inverse()
                         throws MatrixException
```
    Compute the inverse of this matrix.
    
    Returns:
    
    the inverse matrix
    
    Throws:
    
    matrix.MatrixException - if an error occurred
    
    MatrixException
  - determinant
```
public double determinant()
                   throws MatrixException
```
    Compute the determinant.
    
    Returns:
    
    the determinant
    
    Throws:
    
    matrix.MatrixException - if an error occurred
    
    MatrixException
  - norm
```
public double norm()
```
    Compute the Euclidean norm of this matrix.
    
    Returns:
    
    the norm
  - condition
```
public double condition()
                 throws MatrixException
```
    Compute the condition number based on the Euclidean norm.
    
    Returns:
    
    the condition number
    
    Throws:
    
    MatrixException