HydroPortailStats (version 1.1.0)

GetEstimate_ROUGH: Rough estimate of a distribution

Description

Returns a rough first-guess estimate of a distribution. This estimate may be poor but it solely aims at being used as a starting point for more advanced estimation approaches (e.g. max-likelihood or Bayesian). It is therefore chosen as an easy-to-compute explicit formula, robust and error-proof.

Usage

GetEstimate_ROUGH(y, dist)

Value

A list with the following components:

par

numeric vector, estimated parameter vector.

obj

numeric, objective fonction (NA for this estimate)

ok

logical, did computation succeed?

err

integer, error code (0 if ok)

message

error message

Arguments

y

numeric vector, data

dist

character, distribution name

Examples

y=c(9.2,9.5,11.4,9.5,9.4,9.6,10.5,11.1,10.5,10.4)
GetEstimate_ROUGH(y,'Normal')
GetEstimate_ROUGH(y,'LogNormal')
GetEstimate_ROUGH(y,'Gumbel')
GetEstimate_ROUGH(y,'GEV')
GetEstimate_ROUGH(y,'Poisson')