Package org.yamcs.studio.data.formula

Class Statistics

java.lang.Object
org.yamcs.studio.data.formula.Statistics
public abstract class Statistics extends Object
The statistics of a given set of numbers.

For the purpose of statistics calculation, NaNs should be skipped. That is, they should not appear as minimum, maximum, average or stdDev, and shouldn't even be included in the count. The number of elements (including NaNs) will be available from the number set used to create the statistics. This can be useful to determine whether the set actually contained any valid values and therefore if there is anything to do.

The appropriate Statistics instance for an unknown set, or for a set of NaN values, is null.

  • Constructor Details

    • Statistics

      public Statistics()

  • Method Details

    • getRange

      public abstract Range getRange()
      The range of the values.
      Returns:
      the range

    • getCount

      public abstract int getCount()
      The number of values (excluding NaN) included in the set.
      Returns:
      the number of values

    • getAverage

      public abstract double getAverage()
      The average value.
      Returns:
      the average value

    • getStdDev

      public abstract double getStdDev()
      The standard deviation.
      Returns:
      the standard deviation