public void Run()
{
double[] xdata = { 1.0, 2.0, 3.0, 4.0 };
double[] ydata = { 5.0, 2.0, 4.0, 1.0 };
var x = new Vector(xdata);
var y = new Vector(ydata);
Console.WriteLine(" x = " + x);
Console.WriteLine(" y = " + y);
var z = x.Plus(y);
Console.WriteLine(" z = " + z);
z = z.Times(10.0);
Console.WriteLine(" 10z = " + z);
Console.WriteLine(" |x| = " + x.Magnitude());
Console.WriteLine(" <x, y> = " + x.Dot(y));
Console.WriteLine("dist(x, y) = " + x.DistanceTo(y));
Console.WriteLine("dir(x) = " + x.Direction());
Console.ReadLine();
}
/// <summary>
/// Returns the inner product of this vector with that vector.
/// </summary>
/// <param name="that">that the other vector</param>
/// <returns>the dot product between this vector and that vector</returns>
/// throws IllegalArgumentException if the lengths of the two vectors are not equal.
public double Dot(Vector that)
{
if (_n != that._n) throw new ArgumentException("Dimensions don't agree");
var sum = 0.0;
for (var i = 0; i < _n; i++)
sum = sum + (_data[i] * that._data[i]);
return sum;
}
/// <summary>
/// Returns the Euclidean distance between this vector and that vector.
/// </summary>
/// <param name="that">that the other vector</param>
/// <returns>the Euclidean distance between this vector and that vector</returns>
/// throws ArgumentException if the lengths of the two vectors are not equal.
public double DistanceTo(Vector that)
{
if (_n != that._n) throw new ArgumentException("Dimensions don't agree");
return Minus(that).Magnitude();
}
/// <summary>
/// Returns the product of this factor multiplied by the scalar factor: this * factor.
/// </summary>
/// <param name="factor">factor the multiplier</param>
/// <returns>the scalar product of this vector and factor</returns>
public Vector Times(double factor)
{
var c = new Vector(_n);
for (var i = 0; i < _n; i++)
c._data[i] = factor * _data[i];
return c;
}
/// <summary>
/// Returns the sum of this vector and that vector: this + that.
/// </summary>
/// <param name="that">that the vector to add to this vector</param>
/// <returns>the sum of this vector and that vector</returns>
/// throws ArgumentException if the lengths of the two vectors are not equal.
public Vector Plus(Vector that)
{
if (_n != that._n) throw new ArgumentException("Dimensions don't agree");
var c = new Vector(_n);
for (var i = 0; i < _n; i++)
c._data[i] = _data[i] + that._data[i];
return c;
}
