Sequence::Sums< T > Class Template Reference

#include <Sequence/descriptiveStats.hpp>

List of all members.

Public Types
typedef ensureFloating< T, T > ::type	floating_type
Public Member Functions
	BOOST_STATIC_ASSERT ((boost::is_convertible< T, floating_type >::value))
Sums< T > &	operator+= (const T &)
Sums< T > &	operator+= (const Sums< T > &)
const T &	sum () const
const T &	sumSquares () const
floating_type	mean () const
floating_type	variance () const

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Detailed Description

template<typename T>
class Sequence::Sums< T >

A class to keep track of the sum, and sum of squares, of values. I wrote it to make it easier to calculate the means and variances.

Examples:

    //example illustrates use of += and using std::accumulate
    Sequence::Sums<unsigned> s1;
    std::vector<unsigned> vd;
    int i = 0;
    while( i++ < 100 )
    {
    unsigned r = random;
    s1 += r;
    vd.push_back(r);
    }
    Sequence::Sums<double> s2 = std::accumulate(vd.begin(),vd.end(),Sequence::Sums<double>());
    std::cout << s1.mean() << '\t' << s2.mean() << '\n'
    << s1.variance() << '\t' << s2.variance() << '\n';

Note:

Can be used with std::accumulate

Definition at line 95 of file descriptiveStats.hpp.

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The documentation for this class was generated from the following files:

• descriptiveStats.hpp
• descriptiveStats.tcc