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This tests the equality of concentration parameters for spherical data only.
spherconc.test(x, ina)
A list including:
A message stating the value of the mean resultant and which test statistic was used, U1, U2 or U3.
A vector containing the test statistic and its p-value.
A matrix with the data in Euclidean coordinates, i.e. unit vectors
A variable indicating the groupings of the observations.
Michail Tsagris.
R implementation and documentation: Michail Tsagris mtsagris@uoc.gr and Giorgos Athineou <gioathineou@gmail.com>.
The test is designed for spherical data only.
Kanti V. Mardia and Peter E. Jupp. Directional statistics, pg. 226--227.
het.aov, lr.aov, embed.aov, hcf.aov, conc.test, sphereplot
x <- rvmf(100, rnorm(3), 15) ina <- rep(1:4, each = 25) spherconc.test(x, ina)
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