Welcome to the Distance project website

The Distance project provides software for the design and analysis of distance sampling surveys of wildlife populations. This software takes two forms: a Windows-based program and a suite of packages for the statistical programming language R.

Photos of a polar bear, grouse and lizard, taken by Tiago Marques (bear/lizard) and Steve Buckland (grouse)

News

Further optimisation improvement details

01 August 2021

The newest version of our R package mrds (2.2.5), used for fitting detection functions by Distance, has some improvements to its optimisation system. Here are some more details of recent changes and what you might need to watch out for.


mrds 2.2.5 and Distance 1.0.3

08 July 2021

R packages mrds 2.2.5 and Distance 1.0.3 are now on CRAN.


Introductory workshop 20Sept - 01Oct 2021

29 June 2021

The University of St Andrews has been training ecologists and statisticians in design and analysis of distance sampling studies for decades. Perhaps you’ve wanted to attend but scheduling of workshops conflicted with your field work. 👨‍🌾


Introductory workshop registration open

01 February 2021

Introductory workshop, April 2021, registration open.


Examples page updated

20 January 2021

Our examples website has been updated to be easier to use.


Practical design and simulation to optimise distance sampling surveys, March 2021

15 December 2020

The online course “Practical design and simulation to optimise distance sampling surveys” will run 15-17 March 2021.


Spatially explicit models for distance sampling data, March 2021

14 December 2020

The online course “Spatially explicit models for distance sampling data” will run 8-12 March 2021.


Preview of distance sampling training workshops for 2021

30 November 2020

We are planning to offer a selection of introductory and more advanced/specialised workshops in 2021, via video conference. The first, on methods for when animals are missed at zero distance, will be on January 11-12, and registration is currently open.


Pairwise differences in density estimates

24 October 2020

Often ecological questions extend beyond simply wanting an estimate of density in a study region. It is common for inference to extend to differences in density over time or space. A function to assess the significance of differences in density estimates exists in our examples library.


mrds 2.2.3 and Distance 1.0.1 now on CRAN

03 August 2020

New versions of the Distance and mrds R packages are now available on CRAN. Thanks to all those who have taken the time to contact us and help out by reporting unusual behaviour or requesting features.


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