public void testCreateMatrixWithInitialValue() {
Matrix matrix = this.createRandomMatrix();
int M = matrix.getNumRows();
int N = matrix.getNumColumns();
MatrixFactory<?> factory = this.createFactory();
double initialValue = this.random.nextGaussian();
Matrix m3 = factory.createMatrix(M, N, initialValue);
assertNotNull(m3);
assertEquals(M, m3.getNumRows());
assertEquals(N, m3.getNumColumns());
boolean hasNonZero = false;
for (int i = 0; i < M; i++) {
for (int j = 0; j < N; j++) {
double value = m3.getElement(i, j);
if (value != 0.0) {
hasNonZero = true;
assertEquals(initialValue, value, 0.0);
}
}
}
assertTrue(hasNonZero);
}
@Override
public Matrix init(int rows, int cols) {
final Matrix ret = smf.createMatrix(rows, cols);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
if (this.random.nextDouble() > sparcity) ret.setElement(i, j, 1d);
}
}
return ret;
}
@Override
public Matrix init(int rows, int cols) {
final SparseMatrix rand = (SparseMatrix) smf.createUniformRandom(rows, cols, min, max, random);
final Matrix ret = smf.createMatrix(rows, cols);
for (int i = 0; i < rows; i++) {
if (this.random.nextDouble() > sparcity) {
ret.setRow(i, rand.getRow(i));
}
}
return ret;
}
public static Matrix vstack(MatrixFactory<? extends Matrix> matrixFactory, Matrix... matricies) {
int nrows = 0;
int ncols = 0;
for (Matrix matrix : matricies) {
nrows += matrix.getNumRows();
ncols = matrix.getNumColumns();
}
Matrix ret = matrixFactory.createMatrix(nrows, ncols);
int currentRow = 0;
for (Matrix matrix : matricies) {
ret.setSubMatrix(currentRow, 0, matrix);
currentRow += matrix.getNumRows();
}
return ret;
}
/** Test of createMatrix method, of class MatrixFactory. */
public void testCreateMatrix() {
System.out.println("createMatrix");
Matrix matrix = this.createRandomMatrix();
int M = matrix.getNumRows();
int N = matrix.getNumColumns();
MatrixFactory<?> factory = this.createFactory();
Matrix m2 = factory.createMatrix(M, N);
assertNotNull(m2);
assertNotSame(matrix, m2);
assertEquals(M, m2.getNumRows());
assertEquals(N, m2.getNumColumns());
for (int i = 0; i < M; i++) {
for (int j = 0; j < N; j++) {
assertEquals(0.0, m2.getElement(i, j));
}
}
}