// copying vector basis in several samples
public static Matrix <float> VectorToMatrix(int columns, Vector <float> v)
{
List <Vector <float> > vv = new List <Vector <float> >(columns); // creating a list of column vectors
for (int i = 0; i < columns; i++)
{
vv.Add(v); // initilizaing the matrix List
}
return(DenseMatrix.OfColumnVectors(vv)); // return the column list
}