01 /*
02 * $Id: BooleanMatrixFindSample.java,v 1.8 2008/02/02 03:06:25 koga Exp $
03 *
04 * Copyright (C) 2004 Koga Laboratory. All rights reserved.
05 *
06 */
07 package matxbook.chap06;
08
09 import org.mklab.nfc.matrix.BooleanMatrix;
10 import org.mklab.nfc.matrix.DoubleMatrix;
11 import org.mklab.nfc.matrix.IntMatrix;
12
13
14 /**
15 * @author koga
16 * @version $Revision: 1.8 $, 2004/04/14
17 */
18 public class BooleanMatrixFindSample {
19
20 /**
21 * メインメソッド
22 *
23 * @param args コマンドライン引数
24 */
25 @SuppressWarnings("nls")
26 public static void main(String[] args) {
27 DoubleMatrix a = new DoubleMatrix(new double[] {-1, 1, -2, 2});
28 BooleanMatrix b = a.compareElementWise(".>", 0);
29 b.print("a .> 0");
30 IntMatrix index = b.find();
31 index.print("find(a .> 0)");
32 DoubleMatrix c = a.getSubVector(index);
33 c.print("a(a .> 0)");
34 }
35 }
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