Distance Sampling Analyses


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Documentation for package ‘Rdistance’ version 1.3.2

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Rdistance-package Rdistance - Distance Sampling Analyses for Line Transect Data
AIC.dfunc AICc and related fit statistics for detection function objects
coef.dfunc Coefficients of an estimated detection function
cosine.expansion Calcululation of cosine expansion for detection function likelihoods.
distance Rdistance - Distance Sampling Analyses for Line Transect Data
ESW Effective Strip Width for estimated detection functions
F.abund.estim Estimate abundance from distance-sampling data.
F.automated.CDA Automated classical distance analysis.
F.dfunc.estim Estimate a detection function from distance-sampling data.
F.double.obs.prob F.double.obs.prob - Compute double observer probability of detection. No external covariates allowed.
F.gx.estim F.gx.estim - Estimate g(0) or g(x).
F.maximize.g F.maximize.g - Finds the coordinate of the maximum of a distance function.
F.nLL F.nLL - Return the negative log likelihood for a set of distance values.
F.start.limits F.start.limits - Set starting values and limits for parameters of Rdistance functions.
Gamma.like Gamma likelihood for distance analyses
halfnorm.like Standard likelihood functions for distance analyses.
hazrate.like Standard likelihood functions for distance analyses.
hermite.expansion Calcululation of Hermite expansion for detection function likelihoods.
integration.constant Compute the integration constance for distance density functions.
negexp.like Standard likelihood functions for distance analyses.
perp.dists Compute off-transect distances from sighting distances and angles
plot.dfunc Plot a distance function.
print.abund Print abundance estimates.
print.dfunc Print a distance function object.
Rdistance Rdistance - Distance Sampling Analyses for Line Transect Data
simple.expansion Calculate simply polynomial expansion for detection function likelihoods.
sparrow.detections Example data: sparrow detections
sparrow.transects Example data: sparrow transects
uniform.like Standard likelihood functions for distance analyses.