Histogram.cs

using System;
using System.Collections.Generic;
using System.Text;
 
namespace be.gaudry.model.math
{
    public class Histogram
    {
        private int[] values;
        private double mean = 0;
        private double stdDev = 0;
        private int median = 0;
        private int min;
        private int max;
 
        /// <summary>
        /// Values of the histogram
        /// </summary>
        /// 
        public int[] Values
        {
            get { return values; }
        }
 
        /// <summary>
        /// Mean value
        /// </summary>
        /// 
        public double Mean
        {
            get { return mean; }
        }
 
        /// <summary>
        /// Standard deviation
        /// </summary>
        /// 
        public double StdDev
        {
            get { return stdDev; }
        }
 
        /// <summary>
        /// Median value
        /// </summary>
        /// 
        public int Median
        {
            get { return median; }
        }
 
        /// <summary>
        /// Minimum value
        /// </summary>
        /// 
        /// <remarks>Minimum value of the histogram with non zero
        /// hits count.</remarks>
        /// 
        public int Min
        {
            get { return min; }
        }
 
        /// <summary>
        /// Maximum value
        /// </summary>
        /// 
        /// <remarks>Maximum value of the histogram with non zero
        /// hits count.</remarks>
        /// 
        public int Max
        {
            get { return max; }
        }
 
        /// <summary>
        /// Initializes a new instance of the <see cref="Histogram"/> class
        /// </summary>
        /// 
        /// <param name="values">Values of the histogram</param>
        /// 
        public Histogram(int[] values)
        {
            this.values = values;
 
            int i, n = values.Length;
 
            max = 0;
            min = n;
 
            // calculate min and max
            for (i = 0; i < n; i++)
            {
                if (values[i] != 0)
                {
                    // max
                    if (i > max)
                        max = i;
                    // min
                    if (i < min)
                        min = i;
                }
            }
 
            mean = Statistics.Mean(values);
            stdDev = Statistics.StdDev(values);
            median = Statistics.Median(values);
        }
 
        /// <summary>
        /// Get range around median containing specified percentage of values
        /// </summary>
        /// 
        /// <param name="percent">Values percentage around median</param>
        /// 
        /// <returns>Returns the range which containes specifies percentage
        /// of values.</returns>
        /// 
        public IntRange GetRange(double percent)
        {
            return Statistics.GetRange(values, percent);
        }
    }
}