public static int[] Nonzerosign(double[] x)
{
bool ok = false;
int count = x.Length;
int[] y = new int[count];
try
{
ok = MatrixCompute.Ones(ref y);
if (!ok)
{
return(null);
}
for (int i = 0; i < count; i++)
{
if (x[i] >= 0)
{
y[i] = 1;
}
else
{
y[i] = -1;
}
}
return(y);
}
catch (Exception ex)
{
Common.LogError(ex);
return(null);
}
}
public static double[] GetPDist(double[,] X)
{
double[] y = new double[1];
try
{
int nargin = 0;
string dist = "";
if (nargin < 2)
{
dist = "euc";
}
int[] tmpValues = Common.Get2DimensionsSize(X);
int n = tmpValues[0]; int p = tmpValues[1]; double[,] tranpose = new double[p, n];
MatrixCompute.Transpose(X, ref tranpose);
switch (dist)
{
case "seu":
break;
case "mah":
break;
case "min":
break;
case "cos":
break;
case "cor":
break;
case "spe":
break;
default:
break;
}
tmpValues = Common.Get2DimensionsSize(tranpose);
n = tmpValues[0];
p = tmpValues[1];
y = new double[p * (p - 1) / 2];
double tmp = 0.0;
int count = 0;
for (int i = 0; i < p - 1; i++)
{
for (int j = i + 1; j < p; j++)
{
tmp = 0.0;
for (int row = 0; row < n; row++)
{
tmp = tmp + Math.Pow((tranpose[row, i] - tranpose[row, j]), 2.0);
}
y[count] = Math.Sqrt(tmp);
count++;
}
}
return(y);
}
catch (Exception ex)
{
Common.LogError(ex);
return(y);
}
}