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/*
* Copyright (c) 2009-2018, 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.ops;
import org.ejml.data.*;
/**
* Contains a function to convert from one matrix type into another
*
* @author Peter Abeles
*/
public class ConvertMatrixType {
public static Matrix convert( Matrix matrix , MatrixType desired ) {
Matrix m=null;
switch( matrix.getType() ) {
case DDRM: {
switch( desired ) {
case DDRM: {
m = matrix.copy();
} break;
case FDRM: {
m = new FMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixRMaj) matrix, (FMatrixRMaj)m);
} break;
case ZDRM: {
m = new ZMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixRMaj) matrix, (ZMatrixRMaj)m);
} break;
case CDRM: {
m = new CMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixRMaj) matrix, (CMatrixRMaj)m);
} break;
case DSCC: {
m = new DMatrixSparseCSC(matrix.getNumRows(),matrix.getNumCols());
ConvertDMatrixStruct.convert((DMatrixRMaj) matrix, (DMatrixSparseCSC)m);
} break;
case FSCC: {
m = new FMatrixSparseCSC(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixRMaj) matrix, (FMatrixSparseCSC)m);
} break;
}
} break;
case FDRM: {
switch( desired ) {
case FDRM: {
m = matrix.copy();
} break;
case DDRM: {
m = new DMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixRMaj) matrix, (DMatrixRMaj)m);
} break;
case ZDRM: {
m = new ZMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixRMaj) matrix, (ZMatrixRMaj)m);
} break;
case CDRM: {
m = new CMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixRMaj) matrix, (CMatrixRMaj)m);
} break;
case DSCC: {
m = new DMatrixSparseCSC(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixRMaj) matrix, (DMatrixSparseCSC)m);
} break;
case FSCC: {
m = new FMatrixSparseCSC(matrix.getNumRows(),matrix.getNumCols());
ConvertFMatrixStruct.convert((FMatrixRMaj) matrix, (FMatrixSparseCSC)m);
} break;
}
} break;
case ZDRM: {
switch( desired ) {
case CDRM: {
m = new CMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((ZMatrixRMaj) matrix, (CMatrixRMaj)m);
} break;
}
} break;
case CDRM: {
switch( desired ) {
case ZDRM: {
m = new ZMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((CMatrixRMaj) matrix, (ZMatrixRMaj)m);
} break;
}
} break;
case DSCC: {
switch( desired ) {
case DDRM: {
m = new DMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertDMatrixStruct.convert((DMatrixSparseCSC) matrix, (DMatrixRMaj)m);
} break;
case FDRM: {
m = new FMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixSparseCSC) matrix, (FMatrixRMaj)m);
} break;
case ZDRM: {
m = new ZMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixSparseCSC) matrix, (ZMatrixRMaj)m);
} break;
case CDRM: {
m = new CMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixSparseCSC) matrix, (CMatrixRMaj)m);
} break;
case FSCC: {
m = new FMatrixSparseCSC(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((DMatrixSparseCSC) matrix, (FMatrixSparseCSC)m);
} break;
}
} break;
case FSCC: {
switch( desired ) {
case DDRM: {
m = new DMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixSparseCSC) matrix, (DMatrixRMaj)m);
} break;
case FDRM: {
m = new FMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertFMatrixStruct.convert((FMatrixSparseCSC) matrix, (FMatrixRMaj)m);
} break;
case ZDRM: {
m = new ZMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixSparseCSC) matrix, (ZMatrixRMaj)m);
} break;
case CDRM: {
m = new CMatrixRMaj(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixSparseCSC) matrix, (CMatrixRMaj)m);
} break;
case DSCC: {
m = new DMatrixSparseCSC(matrix.getNumRows(),matrix.getNumCols());
ConvertMatrixData.convert((FMatrixSparseCSC) matrix, (DMatrixSparseCSC)m);
} break;
}
} break;
}
return m;
}
}
