Java Utililty Methods Matrix Convert To

List of utility methods to do Matrix Convert To

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Description

The list of methods to do Matrix Convert To are organized into topic(s).

Method

double[][]matrixCastToDouble(String[][] m)
matrix Cast To Double 
double[][] matrixDouble = new double[m.length][];
for (int i = 0; i < m.length; i++)
    matrixDouble[i] = arrayCastToDouble(m[i]);
return matrixDouble;
double[]matrixToArray(double[][] m)
matrix To Array 
int p = m.length * m[0].length;
double[] result = new double[p];
for (int i = 0; i < m.length; i++) {
    for (int j = 0; j < m[i].length; j++) {
        int q = j * m.length + i;
        result[q] = m[i][j];
return result;
int[]matrixToArray(int[][] input, int fromRow, int rows, int fromColumn, int columns)
Converts a 2 dimensional array into a single dimension. 
int[] output = new int[rows * columns];
for (int c = 0; c < columns; c++) {
    for (int r = 0; r < rows; r++) {
        output[c * rows + r] = input[r + fromRow][c + fromColumn];
return output;
double[]matrixToQuaternion(float[] m)
matrix To Quaternion 
double[] res = new double[4];
res[0] = Math.sqrt(1.0 + m[0] + m[5] + m[10]) / 2.0;
double w4 = (4.0 * res[0]);
res[1] = (m[9] - m[6]) / w4; 
res[2] = (m[2] - m[8]) / w4; 
res[3] = (m[4] - m[1]) / w4; 
return res;
shortmatrixToShort(final byte[][] b)
Converts a 2x2 matrix of nibbles to a 16-bit short. 
short result = 0;
result = (short) (result | b[0][0]);
result = (short) ((result << 4) | b[1][0]);
result = (short) ((result << 4) | b[0][1]);
result = (short) ((result << 4) | b[1][1]);
return result;
double[][]toDiagonalMatrix(double[] x)
to Diagonal Matrix 
double[][] m = null;
if (x != null && x.length > 0) {
    m = new double[x.length][x.length];
    int i;
    for (i = 0; i < x.length; i++)
        Arrays.fill(m[i], 0.0);
    for (i = 0; i < x.length; i++)
        m[i][i] = x[i];
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