ConcentrationParameter3D: Calculation of concentration parameter of the angles.

Description Usage Arguments Details Value Author(s) References See Also Examples

View source: R/ConcentrationParameter3D.R

Description

This function calculates the concentration parameter a set of input coordinates.

Usage

1

Arguments

coord

Matrix containing the values of the coordinates

Details

One way to get a set of coordinates X, Y and Z of the origin position and end position (coordinates X, Y and Z of the vector) or of the colatitude and longitude, it is using the LoadData3D function.

The concentration parameter measures the departure of the distribution from the uniform distribution. If this parameter tends to 0, the distribution converges to the uniform distribution, if it tends to infinity, the distribution is concentrated around the mean angle.

Value

The concentration parameter all input coordinates.

Author(s)

Ruiz-Cuetos, J.C., [email protected], Felicisimo, A.M., [email protected], Cuartero, A., [email protected], Polo, M.E., [email protected], Rodriguez, P.G. [email protected]

References

Fisher N.I. , Lewis T. , Embleton, B.J.J. (1987) Statistical analysis of spherical data. Cambridge. Cambridge University Press.

Website http://gim.unex.es/VecStatGraphs3D/

See Also

MeanModule3D, MeanDirection3D, SphericalStandardError3D, AllAngleStatistics.

Examples

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   FileName<-system.file("data/XYZcoor.txt", package="VecStatGraphs3D")
   dat<-LoadData3D(FileName, Type=1)
   coordinates<-dat[,4:6]
   ConcentrationParameter3D(coordinates)

VecStatGraphs3D documentation built on May 29, 2017, 10:51 a.m.