Distance Sampling Detection Function and Abundance Estimation
Add covariate levels detection function plots
Akaike's An Information Criterion for detection functions
Simple summary of density results for bootstrap model
Simple summary of abundance results for bootstrap model
Bootstrap uncertainty estimation for distance sampling models
Check that the data supplied to ds
is correct
Convert units for abundance estimation
Create bins from a set of binned distances and a set of cutpoints.
Create bins from a set of binned distances and a set of cutpoints.
Abundance estimation for distance sampling models
Distance sampling
Goodness of fit tests for distance sampling models
Fit detection functions and calculate abundance from line or point tra...
Detection function objects when detection is certain
The flatfile data format
Goodness of fit testing and quantile-quantile plots
log-likelihood value for a fitted detection function
Multiplier bootstrap helper functions
Distribution of probabilities of detection
Plot a fitted detection function
Predictions from a fitted detection function
Prediction for fake detection functions
Print abundance estimates
Simple pretty printer for distance sampling analyses
Print summary of distance detection function model object
Tools for model selection when distance sampling data are overdisperse...
Make a table of summary statistics for detection function models
Summarize bootstrap abundance uncertainty estimate output
Summary of distance sampling analysis
Unflatten flatfile data.frames
Generate table of unit conversions
Steve Buckland's winter wren surveys
A simple way of fitting detection functions to distance sampling data for both line and point transects. Adjustment term selection, left and right truncation as well as monotonicity constraints and binning are supported. Abundance and density estimates can also be calculated (via a Horvitz-Thompson-like estimator) if survey area information is provided. See Miller et al. (2019) <doi:10.18637/jss.v089.i01> for more information on methods and <https://examples.distancesampling.org/> for example analyses.
Useful links