Rnorm.exp: Rnorm.exp fits a normal+exponential distribution to a...

Description Usage Arguments Details Value Author(s)

View source: R/fitDistributions.R

Description

Distrubtion function devined by: alpha*Normal(mean, varience)+(1-alpha) *Exponential(lambda).

Usage

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Rnorm.exp(xi, wi = rep(1, NROW(xi)), guess = c(0.5, 0, 1, 1),
  tol = sqrt(.Machine$double.eps), maxit = 10000)

Arguments

xi

A vector of observations, assumed to be real numbers in the inveraval (-Inf,+Inf).

wi

A vector of weights. Default: vector of repeating 1; indicating all observations are weighted equally. (Are these normalized internally?! Or do they have to be [0,1]?)

guess

Initial guess for paremeters. Default: c(0.5, 0, 1, 1).

tol

Convergence tolerance. Default: sqrt(.Machine$double.eps).

maxit

Maximum number of iterations. Default: 10,000.

Details

Fits nicely with data types that look normal overall, but have a long tail starting for positive values.

Value

Returns a list of parameters for the best-fit normal distribution (alpha, mean, varience, and lambda).

Author(s)

Charles G. Danko


groHMM documentation built on May 31, 2017, 11:20 a.m.