[
https://issues.apache.org/jira/browse/MATH-1406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15897049#comment-15897049
]
Michael Borcherds commented on MATH-1406:
-----------------------------------------
{noformat}
package org.apache.commons.math3.util;
import java.util.Arrays;
import org.apache.commons.math3.fitting.WeightedObservedPoint;
import org.apache.commons.math3.ode.EquationsMapper;
public class Cloner {
public static double[] clone(double[] array) {
return Arrays.copyOf(array, array.length);
}
public static int[] clone(int[] array) {
return Arrays.copyOf(array, array.length);
}
public static double[][] clone2(double[][] array) {
double[][] arrayClone = new
double[array.length][array[0].length];
for (int i = 0; i < array.length; i++) {
arrayClone[i] = clone(array[i]);
}
return arrayClone;
}
public static Integer[] clone(Integer[] intArray) {
Integer[] ret = new Integer[intArray.length];
for (int i = 0; i < intArray.length; i++) {
ret[i] = intArray[i];
}
return ret;
}
public static WeightedObservedPoint[] clone(
WeightedObservedPoint[] points) {
WeightedObservedPoint[] ret = new
WeightedObservedPoint[points.length];
for (int i = 0; i < points.length; i++) {
ret[i] = new
WeightedObservedPoint(points[i].getWeight(),
points[i].getX(), points[i].getY());
}
return ret;
}
@SuppressWarnings("deprecation")
public static
org.apache.commons.math3.optimization.fitting.WeightedObservedPoint[] clone(
org.apache.commons.math3.optimization.fitting.WeightedObservedPoint[] points) {
org.apache.commons.math3.optimization.fitting.WeightedObservedPoint[] ret = new
org.apache.commons.math3.optimization.fitting.WeightedObservedPoint[points.length];
for (int i = 0; i < points.length; i++) {
ret[i] = new
org.apache.commons.math3.optimization.fitting.WeightedObservedPoint(
points[i].getWeight(),
points[i].getX(), points[i].getY());
}
return ret;
}
public static EquationsMapper[] clone(EquationsMapper[] map) {
EquationsMapper[] ret = new EquationsMapper[map.length];
for (int i = 0; i < map.length; i++) {
ret[i] = new EquationsMapper(map[i].getFirstIndex(),
map[i].getDimension());
}
return ret;
}
/*
* public static void main(String [] args) {
*
* double [][] test0 = {{1,2}, {3,4}, {5,6}, {7,8}}; double [][] test =
* clone2(test0); double [][] test2 = {{0,0},{0,0},{0,0}, {0,0}};
*
* for (int i = 0 ; i < test0.length ; i++) { System.err.println("x");
for
* (int j = 0 ; j < test0[0].length ; j++) {
* System.err.println(test0[i][j]+""); }
*
* }
*
* for (int i = 0 ; i < test.length ; i++) { System.err.println("x");
for
* (int j = 0 ; j < test[0].length ; j++) { test2[i][j] = test[i][j];
* System.err.println(test[i][j]+""); }
*
* }
*
* double [][] Md =
* {{1.0,-0.7963442687575764,-0.06979045741075435,0.634164194383039
* ,0.05557723077302395
* ,0.004870707945602316},{1.0,-1.800861322021828,0.34591100508994765
* ,3.243101501154206
* ,-0.6229377499281824,0.11965442344233779},{1.0,-1.6565081306270901
* ,2.021124834079937
* ,2.7440191868336568,-3.348009720665744,4.084945594934653
* },{1.0,0.0,3.0,0.0
*
,0.0,9.0},{1.0,1.6565081306270901,2.0211248340799375,2.7440191868336568
* ,3.348009720665745
* ,4.084945594934655},{1.0,1.8008613220218281,0.3459110050899481
* ,3.2431015011542064
* ,0.6229377499281833,0.11965442344233809},{1.0,0.7963442687575764
* ,-0.06979045741075435
* ,0.634164194383039,-0.05557723077302395,0.004870707945602316}}; //
* computed by Giac double [][] expectedV =
* {{-0.1600457194306,-0.2571741974603
* ,-0.9189675127038,-0.252478732664,6.134954255981E-015
* ,9.312288130132E-016}
* ,{2.792092708021E-016,2.134378240825E-016,-2.395328134286E-015
* ,6.036400035815E-015
*
,0.5692862939624,0.8221393528512},{-0.3487543593972,-0.009373107044909
* ,0.306665278579
* ,-0.8855726670239,1.186740030005E-016,-3.262054021043E-016}
* ,{-0.2608065371823
* ,-0.912241915565,0.2463995341682,0.1976914444557,2.145345293392E-014
* ,4.637458572027E-017
* },{3.74668595676E-017,-1.397294594507E-016,2.603626211168E-016
* ,-4.132848644997E-015
* ,0.8221393528512,-0.5692862939624},{-0.8858530999305,
* 0.3187291397273,-0.02724678092536
* ,0.336055997955,-7.50072084587E-015,-1.591284138866E-016}} ;
*
* Array2DRowRealMatrix M = new Array2DRowRealMatrix(Md);
*
* SingularValueDecomposition svd = new
SingularValueDecompositionImpl(M);
*
* RealMatrix V = svd.getV();
*
* System.out.println("M = " + M); System.out.println("V = " + V);
* System.out.println("expected V = " + (new
* Array2DRowRealMatrix(expectedV)));
*
* }
*/
}
{noformat}
> official support for compiling on GWT 2.8
> -----------------------------------------
>
> Key: MATH-1406
> URL: https://issues.apache.org/jira/browse/MATH-1406
> Project: Commons Math
> Issue Type: Improvement
> Reporter: Michael Borcherds
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Is there any interest in allowing Apache Commons Math to be officially
> supported on GWT?
> With GWT 2.8.0 the changes needed aren't too hard to get most of it to compile
> You can see the diff from 3.6.1 here:
> https://github.com/murkle/commons-math/issues/1
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