StatBean Name: Periodogram

Purpose: Calculates a peridodogram for a time series.

DataSource: any.

Read/Write Properties

Name	Type	Description	Possible Values	Default Value
removeMean	boolean	whether to subtract mean from time series before calculating periodogram.	true,false	true
seasonalLength	int	The number of time periods comprising a season.	1+	1
taper	double	Amount of tapering to apply at each end of time series (as a percentage).	0.0-50.0	0.0
timeSeriesVariableName	String	The name of the column with data values to be plotted.	Any string.	""

Other Public Methods

Name	Description	Arguments	Return Value
double getCumulativeSum(int i)	Returns the sum of the first i+1 ordinates.	Index.	Cumulative sum.
double getFrequency(int i)	Returns the i-th Fourier frequency.	Index.	Frequency.
int getNumberOfMissingValuesReplaced()	Returns the number of missing values replaced with estimates.	None.	Number replaced.
int getNumberOfOrdinates()	Returns the number of ordinates (or frequencies).	None.	Number.
double getOrdinate(int i)	Returns the periodogram ordinate at the i-th frequency.	Index.	Ordinate.
double getSum()	Returns the sum all the ordinates.	None.	Sum.
int getSampleSize()	Returns the number of data values used to obtain estimates.	None.	Sample size.

Output Variables

Name	Description
Cumulative Sum	Cumulative sum of oridinates.
Frequency	Fourier frequencies.
Ordinate	Periodogram ordiantes.

Code Sample
- see PeriodogramPlot.