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dsims

Distance SamplingSimulations

dsims is a package for simulating distance samplingsurveys to allow users to optimise survey design for studies withparticular properties.

Usingdsims

There is currently three vignette within the dsims package to helpyou get started usingdsims:

• GettingStarted:Getting Started with dsims available fromthe navigation bar at top of the page
• Transition fromDSsim todsims: underArticles on the navigation bar
• Grouped strata: Combining abundance estimates across strataconstructed for design purposes; underArticles on thenavigation bar

Gettingdsims

The easiest way to getdsims is to install it from CRANwithin R-studio or the R interface. We endeavour to make all newfunctionality available on CRAN in a timely manor. However, if you wishto download the development version with the latest updates immediatelyyou can do this using Hadley Wickham’sdevtoolspackage:

  # First, ensure you have a copy of the `devtools` package:  if (!nzchar(system.file(package = "devtools"))) install.packages("devtools")

then installdsims from github:

  library(devtools)  install_github("DistanceDevelopment/dsims", build_vignettes = TRUE)

Troubleshooting tip

During installation of packages, you may get the message “Thesepackages have more recent versions available. It is recommended toupdate all of them. Which would you like to update?” and then a list ofpackages. We recommend you typically choose the option “CRAN packagesonly”. Note you may then get the message that some packages cannot beinstalled because they are already loaded. In this case, a solution maybe to note which packages these are, to open an R console (rather than RStudio) and to use thePackages | Update packages menuoption (or theupdate.packages function) to update thesepackages.