Correlation between two spherical variables.
A spherical variable.
A spherical variable
A very similar to the classical correlation is calcualted. In addition, a hypothesis test for no correlation is performed. Note, that this is a squared correlation actually, so negative values will never be returned.
A vector including:
The value of the squared correlation.
The p-value of the no correlation hypothesis testing.
R implementation and documentation: Michail Tsagris <firstname.lastname@example.org> and Giorgos Athineou <email@example.com>
Kanti V. Mardia and Peter E. Jupp. Directional statistics, pg. 254–255.
spher.reg, vmf, circ.cor1, circ.cor2
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