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Von Mises-Fisher density

Usage

VmfDens(x, mu, kappa)

Arguments

x

Unit vector or matrix of unit vectors (rows).

mu

Mean direction.

kappa

Concentration.

Value

list(pdf, logpdf, log_normalizer).

References

Mardia, K. V. & Jupp, P. E. (2000). Directional Statistics, Sec 9.3.2.

Examples

VmfDens(c(0, 0, 1), c(0, 0, 1), 2)$pdf
#> [1] 0.3242487