Calculates the HCDT, also known as Tsallis entropy of order $q$ of a spatialized community.
# S3 method for wmppp
Tsallis(NorP, q = 1, Correction = "Best", ..., CheckArguments = TRUE)A wmppp.object, with PointType values as species names.
A number: the order of entropy. Some corrections allow only a positive number. Default is 1 for Shannon entropy.
A string containing one of the possible corrections: "None" (no correction), "ChaoShen", "GenCov", "Grassberger", "Holste", "Bonachela", "ZhangGrabchak", or "ChaoWangJost", "Marcon", "UnveilC", "UnveiliC", "UnveilJ" or "Best", the default value. Currently, "Best" is "ChaoWangJost".
Further arguments passed to entropart::Tsallis, entropart::Diversity, entropart::Richness, entropart::Shannon or entropart::Simpson (S3 methods for class 'AbdVector' or 'numeric')
If TRUE (default), the function arguments are verified.
Should be set to FALSE to save time in simulations for example, when the arguments have been checked elsewhere.
A named number equal to the calculated entropy. The name is that of the bias correction used.
Tsallis (Havrda and Charvát 1967; Daróczy 1970; Tsallis 1988) generalized entropy is a generalized measure of diversity (Jost 2006) . See Tsallis for more details.
Daróczy Z (1970).
“Generalized Information Functions.”
Information and Control, 16(1), 36--51.
doi:10.1016/s0019-9958(70)80040-7
.
Havrda J, Charvát F (1967).
“Quantification Method of Classification Processes. Concept of Structural Alpha-Entropy.”
Kybernetika, 3(1), 30--35.
Jost L (2006).
“Entropy and Diversity.”
Oikos, 113(2), 363--375.
doi:10.1111/j.2006.0030-1299.14714.x
.
Tsallis C (1988).
“Possible Generalization of Boltzmann-Gibbs Statistics.”
Journal of Statistical Physics, 52(1), 479--487.
doi:10.1007/BF01016429
.
Tsallis(Paracou6)
#> UnveilJ
#> 4.702037