View source: R/compared_methods.R
fisher.alpha | R Documentation |
fisher.alpha
estimates the parameter alpha in the logseries estimator by
Fisher, R. A., et al. (1943) based on an initial sample.
fisher.alpha(n)
n |
A two-column matrix. The first column is the frequency j = 1,2,…; and the second column is N_j, the number of species with each species represented exactly j times in the initial sample. The first column must be sorted in an ascending order. |
A double, the estimated value of the parameter alpha
Chao Deng
Fisher, R., Corbet, A., & Williams, C. (1943). The Relation Between the Number of Species and the Number of Individuals in a Random Sample of an Animal Population. Journal of Animal Ecology, 12(1), 42-58. doi:10.2307/1411
## load library library(preseqR) ## import data data(WillButterfly) ## estimating alpha fisher.alpha <- fisher.alpha(WillButterfly)
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