/// <summary>
/// Create distance matrix from <see cref="IDistance"/>.
/// </summary>
/// <param name="data"></param>
/// <param name="distance"></param>
public GenericDistanceMatrix(MatrixIndexer data, IDistance distance)
{
N = data.RowCount;
_distances = new double[N * (N - 1) / 2];
int k = 0;
for (int i = 0; i < N; i++)
{
var xi = data.GetRow(i);
for (int j = i+1; j < N; j++)
{
_distances[k++] = distance.Get(xi, data.GetRow(j));
}
}
}
private static BaseVector GetVector(MatrixIndexer data, int index, MatrixAccess access)
{
return access == MatrixAccess.Rows ? data.GetRow(index) : data.GetColumn(index);
}
