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Negative Exponential kernel

Negative Exponential kernel

negative_exponential_function(x, mean_dispersal_dist)
  • x: <numeric> distance at which the probability should be calculated.
  • mean_dispersal_dist: <numeric> mean dispersal distance. Needs to be (>0).

The negative exponential kernel is defined as: f(x) = {1} / {2 \pi a^2} e^{-{x} / {a}}where a is the mean dispersal distance divided by 2.

Nathan, R., Klein, E., Robledo-Arnuncio, J.J. and Revilla, E. (2012) Dispersal kernels: review. in: Dispersal Ecology and Evolution pp. 187—210. (eds J. Clobert, M. Baguette, T.G. Benton and J.M. Bullock), Oxford, UK: Oxford Academic, 2013.

<numeric> The probability at distance x.

negative_exponential_function(1, 1)