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Rdistance (version 1.0)

Distance sampling analyses

Description

Analysis of line transect surveys. Estimates distance-based sightability functions and abundances.

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Version

Install

install.packages('Rdistance')

Monthly Downloads

659

Version

1.0

License

GNU General Public License

Maintainer

Trent McDonald

Last Published

March 6th, 2012

Functions in Rdistance (1.0)

AIC.dfunc

AICc and related fit statistics for distance function objects
ESW

Effective Strip Width for estimated distance functions
F.dfunc.estim

F.dfunc.estim - Estimate a distance function.
F.start.limits

F.start.limits - Set starting values and limits for parameters of Rdistance functions.
F.nLL

F.nLL - Return the negative log likelihood for a set of distance values.
integration.constant

Compute the integration constance for distance density functions.
plot.dfunc

Plot a distance function.
F.abund.estim

F.abund.estim - Estimate abundance from distance data.
print.dfunc

Print a distance function object.
uniform.like

Standard likelihood functions for distance analyses.
Gamma.like

Gamma likelihood for distance analyses
print.abund

Print abundance estimates.
F.gx.estim

F.gx.estim - Estimate g(0) or g(x).
coef.dfunc

Coefficients of an estimated distance function
simple.expansion

Calculate simply polynomial expansion for detection function likelihoods.
F.maximize.g

F.maximize.g - Finds the coordinate of the maximum of a distance function.
cosine.expansion

Calcululation of cosine expansion for detection function likelihoods.
Rdistance-package

Rdistance - Distance and Line Transect Analyses.
hermite.expansion

Calcululation of Hermite expansion for detection function likelihoods.
F.double.obs.prob

F.double.obs.prob - Compute double observer probability of detection. No external covariates allowed.
F.automated.CDA

F.automated.CDA - Automated classical distance analysis.