/**
* <p>
* Sets each element in the matrix to a value drawn from an Gaussian distribution with the specified mean and
* standard deviation
* </p>
*
* @param mat The matrix who is to be randomized. Modified.
* @param mean Mean value in the distribution
* @param stdev Standard deviation in the distribution
* @param rand Random number generator used to fill the matrix.
*/
public static void fillGaussian(FMatrixD1 mat, float mean, float stdev, IMersenneTwister rand)
{
float[] d = mat.getData();
int size = mat.getNumElements();
for (int i = 0; i < size; i++)
{
d[i] = mean + stdev * (float)rand.NextGaussian();
}
}
/**
* <p>
* Sets each element in the matrix to a value drawn from an uniform distribution from 'min' to 'max' inclusive.
* </p>
*
* @param min The minimum value each element can be.
* @param max The maximum value each element can be.
* @param mat The matrix who is to be randomized. Modified.
* @param rand Random number generator used to fill the matrix.
*/
public static void fillUniform(FMatrixD1 mat, float min, float max, IMersenneTwister rand)
{
float[] d = mat.getData();
int size = mat.getNumElements();
float r = max - min;
for (int i = 0; i < size; i++)
{
d[i] = r * rand.NextFloat() + min;
}
}