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#ifndef __CGLA_STATISTICS_H__
#define __CGLA_STATISTICS_H__

#include <vector>

namespace CGLA
{
        template<class VT>
                VT mean(const std::vector<VT>& vec)
                {
                        VT v(0);
                        for(int i=0;i<vec.size();++i)
                                v += vec[i];
                        v /= vec.size();

                        return v;
                }


        /** Function that computes the covariance of a set of points.
                        This function returns the mean, and, upon completion, the
                        final argument contains the covariance matrix.

                        This template is instantiated for Vec3f, Vec2f, and Vec4f. */
                        
        template<class VT, class MT>
                VT covariance(const std::vector<VT>& vec, MT& C_out);
}




#endif