DeterminantFromMinor_DDRM (ejml-ddense 0.39 API)

java.lang.Object
- org.ejml.dense.row.misc.DeterminantFromMinor_DDRM

```
public class DeterminantFromMinor_DDRM
extends java.lang.Object
```
Computes the determinant of a matrix using Laplace expansion. This is done using minor matrices as is shown below:

|A| = Sum{ i=1:k ; a_ij C_ij }

C_ij = (-1)^i+j M_ij

Where M_ij is the minor of matrix A formed by eliminating row i and column j from A.

This is significantly more computationally expensive than using LU decomposition, but its computation has the advantage being independent of the matrices value.

See Also:

LUDecompositionAlt_DDRM

- Constructor Summary
  
  Constructors
  Constructor Description
  
  DeterminantFromMinor_DDRM(int width)
  
  DeterminantFromMinor_DDRM(int width, int minWidth)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  double compute(org.ejml.data.DMatrix1Row mat)
  Computes the determinant for the specified matrix.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DeterminantFromMinor_DDRM
```
public DeterminantFromMinor_DDRM(int width)
```
    Parameters:
    
    width - The width of the matrices that it will be computing the determinant for
  - DeterminantFromMinor_DDRM
```
public DeterminantFromMinor_DDRM(int width,
                                 int minWidth)
```
    Parameters:
    
    width - The width of the matrices that it will be computing the determinant for
    
    minWidth - At which point should it use a predefined function to compute the determinant.
- Method Detail
  - compute
```
public double compute(org.ejml.data.DMatrix1Row mat)
```
    Computes the determinant for the specified matrix. It must be square and have the same width and height as what was specified in the constructor.
    
    Parameters:
    
    mat - The matrix whose determinant is to be computed.
    
    Returns:
    
    The determinant.