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.
Accepting widening participation scholarship applications now; General registration open 31 January 2023
We would like to make you aware that our design and simulation packages (
dsims) are temporarily only available from our development repository on github. Please follow link for instructions on installing them.
We are pleased to announce the imminent release of new versions of our R packages
mrds. The information below will be particularly relevant to users of dht2. We recommend all users of these packages update to the newest versions.
Registration is now open; closing on 30 November 2022
We are pleased to announce the release of a new version of Distance for Windows, Distance 7.5. This version upgrades to use 64 bit R and also contains new versions of our R packages which are also now on CRAN.
Registration is now open for our autumn online training workshops, on camera trap distance sampling, methods for when animals are missed on the trackline, and design and simulation.
This message is relevant for users of Distance for Windows who make use of the analysis engines that call R - that is the MRDS, DSM and MA analysis engines. Distance for Windows currently is not compatible with the latest version of R (4.2); we suggest a workaround and announce that we will be releasing a new version of Distance for Windows in August.
We announce the release of Distance 7.4 release 2. This unplanned interim release was deemed necessary to fix a bug relating to project creation of analyses involving cluster size and / or double observer data. We advise users to update Distance to this latest version, especially if Distance 7.4 release 1 has already been installed.
This bug affects you if you are
- starting a new Distance project and either
- animals occur in groups (group size is one of your data fields) or
- you have double observer data with the fields object, observer and detected
Never fear, there is a simple work around
We are pleased to announce the release of new versions of our R packages
dsims. We recommend all users of these packages update to the newest versions.