Variable.PERCENTILE | Javadocs [I2P+]

java.lang.Object

org.rrd4j.data.Variable

org.rrd4j.data.Variable.PERCENTILE

Direct Known Subclasses:: Variable.PERCENTILENAN

Enclosing class:: Variable

public static class Variable.PERCENTILEextends Variable

Find the point at the n-th percentile.

Nested Class Summary
Nested classes/interfaces inherited from class Variable
Variable.AVERAGE, Variable.ComparPercentElemen, Variable.FIRST, Variable.LAST, Variable.LSLCORREL, Variable.LSLINT, Variable.LSLSLOPE, Variable.MAX, Variable.MIN, Variable.PercentElem, Variable.PERCENTILE, Variable.PERCENTILENAN, Variable.STDDEV, Variable.TOTAL, Variable.Value
Modifier and Type
Class
Description
static class
Variable.AVERAGE
Calculate the average of the data points.
(package private) static final class
Variable.ComparPercentElemen
The sort used by rrdtool for percent, where NaN < -INF < finite values < INF
static class
Variable.FIRST
Find the first valid data point and it's timestamp
static class
Variable.LAST
Find the first last valid point and it's timestamp
static class
Variable.LSLCORREL
Calculate the correlation coefficient of the least squares line.
static class
Variable.LSLINT
Calculate the y-intercept of the least squares line.
static class
Variable.LSLSLOPE
Calculate the slop of the least squares line.
static class
Variable.MAX
The biggest of the data points, stamped with the latest point attaining it.
static class
Variable.MIN
The smallest of the data points, stamped with the latest point attaining it.
(package private) static final class
Variable.PercentElem
Store all the informations about a datasource point, for predictive and consistent sorting
static class
Variable.PERCENTILE
Find the point at the n-th percentile.
static class
Variable.PERCENTILENAN
Percentile calculation that leaves gap entries out of the ranking.
static class
Variable.STDDEV
Calculate the standard deviation for the data point.
static class
Variable.TOTAL
Calculate the sum of the data points.
static final class
Variable.Value
This class store both the value and the time stamp It will be used by graph rendering legend
Field Summary
Fields
Modifier and Type
Field
Description
private final float
percentile
Percentile threshold (0-100)
private final boolean
withNaN
Whether to include NaN values in calculation
Fields inherited from class Variable
INVALIDVALUE
Modifier and Type
Field
Description
static final Variable.Value
INVALIDVALUE
Represents an invalid value with NaN (Not a Number) value.
Constructor Summary
Constructors
Modifier
Constructor
Description
PERCENTILE(double percentile)
Creates a percentile calculation that lets gap entries count in the ranking.
PERCENTILE(float percentile)
Creates a percentile calculation that lets gap entries count in the ranking.
protected
PERCENTILE(float percentile, boolean withNaN)
Creates a percentile calculation.
Method Summary
All Methods
Modifier and Type
Method
Description
protected Variable.Value
fill(long[] timestamps, double[] values, long start, long end)
This method is call with the needed values, extracted from the datasource to do the calculation.
Methods inherited from class Variable
calculate, getValue
Modifier and Type
Method
Description
(package private) void
calculate(Source s, long start, long end)
Used to calculate the needed value from a source, this method call the abstract method Variable.fill(long[], double[], long, long).
Variable.Value
getValue()
Returns the value left by the last Variable.calculate(Source, long, long) call.
Methods inherited from class Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- percentile
  private final float percentile
  Percentile threshold (0-100)
- withNaN
  private final boolean withNaN
  Whether to include NaN values in calculation
Constructor Details
- PERCENTILE
  protected PERCENTILE(float percentile, boolean withNaN)
  Creates a percentile calculation.
  Parameters:
  percentile - rank to report, 0 for the smallest point through 100 for the largest
  withNaN - whether gap entries take part in the ranking; being ranked below every finite point, they push the reported value up when included
- PERCENTILE
  public PERCENTILE(double percentile)
  Creates a percentile calculation that lets gap entries count in the ranking.
  Parameters:
  percentile - rank to report, 0 for the smallest point through 100 for the largest
- PERCENTILE
  public PERCENTILE(float percentile)
  Creates a percentile calculation that lets gap entries count in the ranking.
  Parameters:
  percentile - rank to report, 0 for the smallest point through 100 for the largest
Method Details
- fill
  protected Variable.Value fill(long[] timestamps, double[] values, long start, long end)
  Description copied from class: Variable
  This method is call with the needed values, extracted from the datasource to do the calculation.
  Value is to be filled with both the double value and a possible timestamp, when it's used to find a specific point
  Specified by:
  fill in class Variable
  Parameters:
  timestamps - the timestamps for the value
  values - the actual values
  start - the start of the period
  end - the end of the period
  Returns:
  a filled Value object

Nested Class Summary

Nested classes/interfaces inherited from class Variable

Field Summary

Fields inherited from class Variable

Constructor Summary

Method Summary

Methods inherited from class Variable

Methods inherited from class Object

Field Details

percentile

withNaN

Constructor Details

PERCENTILE

PERCENTILE

PERCENTILE

Method Details

fill