one_data_stat.h

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// -*- mode: c++ -*-
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#ifndef JSK_PCL_ROS_ONE_DATA_STAT_H_
#define JSK_PCL_ROS_ONE_DATA_STAT_H_

#include <boost/accumulators/accumulators.hpp>
#include <boost/accumulators/statistics/stats.hpp>
#include <boost/accumulators/statistics/min.hpp>
#include <boost/accumulators/statistics/max.hpp>
#include <boost/accumulators/statistics/variance.hpp>
#include <boost/accumulators/statistics/count.hpp>

namespace jsk_pcl_ros
{
  class OneDataStat
  {
  public:
    typedef boost::shared_ptr<OneDataStat> Ptr;
    typedef boost::accumulators::accumulator_set<
      double,
      boost::accumulators::stats<boost::accumulators::tag::count,
                                 boost::accumulators::tag::mean,
                                 boost::accumulators::tag::min,
                                 boost::accumulators::tag::max,
                                 boost::accumulators::tag::variance> > Accumulator;
    virtual void addData(float r)
      {
        acc_(r);
      }

    virtual double mean() const { return boost::accumulators::mean(acc_); }
    virtual double min() const { return boost::accumulators::min(acc_); }
    virtual double max() const { return boost::accumulators::max(acc_); }
    virtual double count() const { return boost::accumulators::count(acc_); }
    virtual double variance() const { return boost::accumulators::variance(acc_); }
    virtual double stddev() const { return sqrt(variance()); }
  
  protected:
    Accumulator acc_;
  private:
  };

  double mean(const OneDataStat& d) 
  {
    return d.mean();
  }

  double min(const OneDataStat& d) 
  {
    return d.min();
  }

  double max(const OneDataStat& d) 
  {
    return d.max();
  }

  double count(const OneDataStat& d)
  {
    return d.count();
  }

  double variance(const OneDataStat& d)
  {
    return d.variance();
  }

  double stddev(const OneDataStat& d)
  {
    return d.stddev();
  }

}

#endif