trait_fit_distributions {traitstrap}

Fit trait distributions

Description

Function to fit parametric distributions for each species-by-trait combination at the finest scale of the user-supplied hierarchy. This function returns a tibble containing the fitted parameters.

Usage

trait_fit_distributions(filled_traits, distribution_type = "normal")

Arguments

filled_traits

output from the trait_fill function.

distribution_type

the type of statistical distribution to use. Character or named list. Currently accepts "normal","lognormal", and "beta".

Details

The distributions can either be a single distribution type which is used for all traits, or traits can be assigned specific distributions types by supplying the function with a named vector of traits, e.g. ⁠c(height = "normal", mass = "lognormal"))⁠.

Value

a tibble containing fitted distribution parameters for each trait in each species for each plot.

Examples

library(dplyr)
data(community)
data(trait)

filled_traits <- trait_fill(
  comm = community |>
    filter(PlotID %in% c("A", "B")),
  traits = trait,
  scale_hierarchy = c("Site", "PlotID"),
  taxon_col = "Taxon", value_col = "Value",
  trait_col = "Trait", abundance_col = "Cover"
)

fitted_distributions <- trait_fit_distributions(
  filled_traits = filled_traits,
  distribution_type = "normal"
)