| fisher.alpha {preseqR} | R Documentation |
The function estimates the parameter alpha in the logseries estimator by Fisher, R. A., et al. (1943) based on a 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 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)