Description Usage Arguments Details Value Author(s) References See Also Examples
This function performs the Rayleigh test of uniformity.
1 | RayleighTest3D(coord, Alpha = 0.05)
|
coord |
Matrix containing the values of the coordinates |
Alpha |
Value used to obtain the Rayleigh Value from the chi-square table. The values can be 0.05, 0.025, 0.01, 0.005, 0.001, 0.0005. The default is 0.05. |
This test detects a single modal direction in a sample of angles when the mean angles is unspecified. The hypothesis of uniformity is rejected if the mean module is very large. This test assumes that a larger mean module implies a more concentration around the mean, and therefore less probability that the data is uniformly distributed.
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.
Returns the probability value, and indicates whether or not to accept the hypothesis of uniformity.
Ruiz-Cuetos, J.C., bilba_t@hotmail.com, Polo, M.E., mepolo@unex.es, Rodriguez, P.G. pablogr@unex.es
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/
AllAngleStatistics
, AllModuleStatistics3D
.
1 2 3 4 | FileName<-system.file("data/XYZcoor.txt", package="VecStatGraphs3D")
dat<-LoadData3D(FileName, Type=1)
coordinates<-dat[,4:6]
RayleighTest3D(coordinates, Alpha = 0.05)
|
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