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/*
* Copyright (c) 2009-2020, Peter Abeles. All Rights Reserved.
*
* This file is part of Efficient Java Matrix Library (EJML).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ejml.equation;
import org.ejml.UtilEjml;
import org.ejml.data.DMatrixRMaj;
import org.ejml.dense.row.CommonOps_DDRM;
import org.ejml.dense.row.MatrixFeatures_DDRM;
import org.ejml.dense.row.RandomMatrices_DDRM;
import org.junit.jupiter.api.Test;
import java.util.Random;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
/**
* @author Peter Abeles
*/
public class TestMatrixConstructor {
Random rand = new Random(234);
@Test
public void basicTest() {
DMatrixRMaj A = RandomMatrices_DDRM.rectangle(10,8,rand);
DMatrixRMaj B = CommonOps_DDRM.extract(A,0,5,0,3);
DMatrixRMaj C = CommonOps_DDRM.extract(A,0,5,3,8);
DMatrixRMaj D = CommonOps_DDRM.extract(A,5,10,0,8);
MatrixConstructor alg = new MatrixConstructor(new ManagerTempVariables());
alg.addToRow(new VariableMatrix(B));
alg.addToRow(new VariableMatrix(C));
alg.endRow();
alg.addToRow(new VariableMatrix(D));
alg.construct();
DMatrixRMaj found = alg.getOutput().matrix;
assertTrue(MatrixFeatures_DDRM.isIdentical(A, found, UtilEjml.TEST_F64));
}
@Test
public void setToRequiredSize_matrix() {
MatrixConstructor alg = new MatrixConstructor(new ManagerTempVariables());
alg.addToRow(new VariableMatrix(new DMatrixRMaj(2, 3)));
alg.addToRow(new VariableMatrix(new DMatrixRMaj(2, 4)));
alg.endRow();
alg.addToRow(new VariableMatrix(new DMatrixRMaj(1, 7)));
alg.endRow();
DMatrixRMaj a = new DMatrixRMaj(1,1);
alg.setToRequiredSize(a);
assertEquals(7,a.numCols);
assertEquals(3,a.numRows);
}
@Test
public void setToRequiredSize_scalar() {
MatrixConstructor alg = new MatrixConstructor(new ManagerTempVariables());
alg.addToRow(new VariableDouble(123));
alg.addToRow(new VariableDouble(1));
alg.endRow();
DMatrixRMaj a = new DMatrixRMaj(1,1);
alg.setToRequiredSize(a);
assertEquals(2,a.numCols);
assertEquals(1,a.numRows);
}
}
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