VecStatGraphs2D (version 1.8)

CircularVariance: Calculation of the Circular Variance of the azimuths

Description

This function calculates the circular variance from a set of input azimuths.

Usage

CircularVariance(azimuths)

Arguments

azimuths

Vector containing the values of the azimuths

Value

The value of the circular variance of all input azimuths. This value ranges between 0 and 1.

Details

One way to get a set of azimuths from X and Y coordinates of the vectors is to use the LoadData function.

References

Fisher N.I. (1995) Statistical analysis of circular data. Cambridge. Cambridge University Press. Website http://gim.unex.es/VecStatGraphs2D/

See Also

MeanModule, MeanAzimuth, CircularStandardDeviation,

CircularDispersal, KurtosisAzimuthCoefficient, VonMisesParameter,

SkewnessAzimuthCoefficient, AllAzimuthStatistics.

Examples

   FileName<-system.file("data/RectangularData.txt", package="VecStatGraphs2D")
   dat<-LoadData(FileName, Type=2)
   azimuths<-dat[,2]
   CircularVariance(azimuths)