This function calculates the dispersion value for microbiome data based on the
provided parameters: mean abundance, asymptotic dispersion, and extra Poisson dispersion.
Usage
dispersion_fun(mean_abund, asymptDisp, extraPois)
Arguments
- mean_abund
Numeric value representing the mean abundance of the taxa.
- asymptDisp
Numeric value for the asymptotic dispersion (the dispersion at high abundance).
Numeric value for the extra Poisson dispersion (to model overdispersion).
Value
A numeric value representing the dispersion.
Details
The dispersion is calculated using the formula:
$$dispersion = asymptDisp + \frac{extraPois}{meanAbund}$$
Examples
mean_abund <- 10
asymptDisp <- 0.1
extraPois <- 0.05
dispersion_fun(mean_abund, asymptDisp, extraPois)
#> [1] 0.105