JSci.maths.matrices.DoubleMatrix Maven / Gradle / Ivy
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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software.
It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ...
Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).
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/* AUTO-GENERATED */
package JSci.maths.matrices;
import JSci.maths.ExtraMath;
import JSci.maths.Mapping;
import JSci.maths.DimensionException;
import JSci.maths.vectors.AbstractDoubleVector;
import JSci.maths.vectors.DoubleVector;
import JSci.maths.groups.AbelianGroup;
import JSci.maths.algebras.*;
import JSci.maths.fields.*;
/**
* The DoubleMatrix class provides an object for encapsulating double matrices.
* @version 2.2
* @author Mark Hale
*/
public class DoubleMatrix extends AbstractDoubleMatrix {
/**
* Array containing the elements of the matrix.
*/
protected final double matrix[][];
/**
* Constructs a matrix by wrapping an array.
* @param array an assigned value
*/
public DoubleMatrix(final double array[][]) {
super(array.length, array[0].length);
matrix=array;
}
/**
* Constructs an empty matrix.
*/
public DoubleMatrix(final int rows,final int cols) {
this(new double[rows][cols]);
}
/**
* Constructs a matrix from an array of vectors (columns).
* @param array an assigned value
*/
public DoubleMatrix(final AbstractDoubleVector array[]) {
this(array[0].dimension(), array.length);
for(int i=0;i=0 && i=0 && j=0 && i=0 && j
-norm.
* @author Taber Smith
*/
public double infNorm() {
double result=0,tmpResult;
for(int i=0;iresult)
result=tmpResult;
}
return result;
}
/**
* Returns the Frobenius or Hilbert-Schmidt (l2) norm.
* @jsci.planetmath FrobeniusMatrixNorm
*/
public double frobeniusNorm() {
double result=0.0;
for(int j,i=0;i