Dear Dr,

First of all, thanks for create great Accord framework. I was be angry cause my program doesn't work correctly without any algorithmic or exception problems! I found a silly bug in parameter references that exchange it!

public static double Euclidean(double x1, double y1, double x2, double y2)
{
return System.Math.Sqrt(SquareEuclidean(x1, y1, x2, y2));
}

public static double SquareEuclidean(double x1, double x2, double y1, double y2)
{
double dx = x1 - x2;
double dy = y1 - y2;
return dx * dx + dy * dy; ;
}

It is bit issue, but it is a shadowy nightmare issue :)

Best regards,
Hashem.