com.vividsolutions.jts.math
Class Matrix

java.lang.Object
  com.vividsolutions.jts.math.Matrix

public class Matrix
extends java.lang.Object

Implements some 2D matrix operations (in particular, solving systems of linear equations).

Author:

Martin Davis

Constructor Summary

Matrix()

Method Summary

static double[]

solve(double[][] a, double[] b) Solves a system of equations using Gaussian Elimination.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Matrix

public Matrix()

Method Detail

solve

public static double[] solve(double[][] a,
                             double[] b)

Solves a system of equations using Gaussian Elimination. In order to avoid overhead the algorithm runs in-place on A - if A should not be modified the client must supply a copy.

Parameters:

a - an nxn matrix in row/column order )modified by this method)

b - a vector of length n

Returns:

a vector containing the solution (if any)

Throws:

java.lang.IllegalArgumentException - if the matrix is the wrong size