Package org.rrd4j.data

• Interface Summary 

  Interface	Description
  IPlottable	Interface for custom data sources used in RRD graphs. Implement this interface to create custom datasources that can be passed to RrdGraphDef for graphing operations.
  NonRrdSource	Interface for non-RRD data sources. Represents computed or derived data sources that don't directly reference RRD data but calculate values from other sources.

• Class Summary 

  Class	Description
  Aggregator	Aggregates RRD data values over specified time periods. Provides statistical aggregation functions for time-series data with configurable time steps and value arrays.
  CDef	RRD CDEF (Computed Data Source Definition) implementation. Creates computed data sources using Reverse Polish Notation (RPN) expressions on existing data sources.
  DataProcessor	Class which should be used for all calculations based on the data fetched from RRD files.
  Def	RRD DEF (Data Source Definition) implementation. Represents a data source defined in an RRD file with specific name, consolidation function, and backend configuration.
  LinearInterpolator	Interpolates datasource values from timestamp-value collections. Suitable for linear interpolation of time-series data points.
  Normalizer	Normalizes RRD data timestamps and values to consistent intervals. Handles alignment of time-series data to ensure regular sampling intervals and proper chronological ordering.
  PDef	RRD PDEF (Plottable Data Source Definition) implementation. Creates data sources from plottable objects that can provide values based on timestamps.
  RpnCalculator	Reverse Polish Notation (RPN) expression calculator. Evaluates mathematical expressions on RRD data sources using RPN notation for efficient computation.
  Source	Abstract base class for RRD data sources. Provides common functionality for storing and managing time-series data with timestamps and values.
  Variable	Abstract class for extracting single values from data sets (VDEF in rrdtool). Provides statistical calculations on RRD values and supports custom computation methods for advanced data processing.
  Variable.AVERAGE	Calculate the average of the data points.
  Variable.ComparPercentElemen	The sort used by rrdtool for percent, where NaN < -INF < finite values < INF
  Variable.FIRST	Find the first valid data point and it's timestamp
  Variable.LAST	Find the first last valid point and it's timestamp
  Variable.LSLCORREL	Calculate the correlation coefficient of the least squares line.
  Variable.LSLINT	Calculate the y-intercept of the least squares line.
  Variable.LSLSLOPE	Calculate the slop of the least squares line.
  Variable.MAX	The biggest of the data points and it's time stamp (the first one) is stored.
  Variable.MIN	The smallest of the data points and it's time stamp (the first one) is stored.
  Variable.PercentElem	Store all the informations about a datasource point, for predictive and consistent sorting
  Variable.PERCENTILE	Find the point at the n-th percentile.
  Variable.PERCENTILENAN	PERCENTILENAN class.
  Variable.STDDEV	Calculate the standard deviation for the data point.
  Variable.TOTAL	Calculate the sum of the data points.
  Variable.Value	This class store both the value and the time stamp It will be used by graph rendering legend
  VDef	RRD VDEF (Variable Definition) implementation. Creates computed data sources by applying aggregation functions to existing data sources.

• Enum Summary 

  Enum	Description
  LinearInterpolator.Method	A enumeration of interpolation methods

Package org.rrd4j.data Description