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Fit Burrlioz Distributions

Source: R/fit-burrlioz.R
ssd_fit_burrlioz.Rd

Fits 'burrIII3' distribution. If shape1 parameter is at boundary returns 'lgumbel' (which is equivalent to inverse Weibull). Else if shape2 parameter is at a boundary returns 'invpareto'. Otherwise returns 'burrIII3'

Usage

ssd_fit_burrlioz(
  data,
  left = "Conc",
  ...,
  rescale = FALSE,
  control = list(),
  silent = FALSE
)

Arguments

data

A data frame.

left

A string of the column in data with the concentrations.

...

Unused.

rescale

A string specifying whether to leave the values unchanged ("no") or to rescale concentration values by dividing by the geometric mean of the minimum and maximum positive finite values ("geomean") or to logistically transform ("odds").

control

A list of control parameters passed to stats::optim().

silent

A flag indicating whether fits should fail silently.

Value

An object of class fitdists.

See also

ssd_fit_dists()

Examples

ssd_fit_burrlioz(ssddata::ccme_boron)
#> Distribution 'invpareto'
#>   scale 75.2608
#>   shape 0.568403
#> 
#> Parameters estimated from 28 rows of data.