camtraptor

camtraptor is an R package to explore and visualize Camera Trap Data Packages (Camtrap DP). It offers a step-by-step workflow to read Camtrap DP files, filter data of interest, summarize information (e.g. number of observed species) and visualize this per deployment on an interactive map. You can also use it to transform data for analysis in camtrapR.

Get started

To get started, see:

• Vignettes: tutorials showcasing functionality.
• Function reference: overview of all functions.

Installation

You can install the development version of camtraptor from GitHub with:

# install.packages("pak")
# pak::pak("inbo/camtraptor")
install.packages("camtraptor", repos = c('https://inbo.r-universe.dev', 'https://cloud.r-project.org'))

Example

Get an overview of the species detected in an example Camera Trap Data Package dataset:

library(camtraptor)
#> 
#> Attaching package: 'camtraptor'
#> The following object is masked from 'package:base':
#> 
#>     contributors
x <- example_dataset()
taxa(x)
#> # A tibble: 10 × 5
#>    scientificName     taxonID  taxonRank vernacularNames.eng vernacularNames.nld
#>    <chr>              <chr>    <chr>     <chr>               <chr>              
#>  1 Anas platyrhynchos https:/… species   mallard             wilde eend         
#>  2 Anas strepera      https:/… species   gadwall             krakeend           
#>  3 Ardea              https:/… genus     great herons        reigers            
#>  4 Ardea cinerea      https:/… species   grey heron          blauwe reiger      
#>  5 Aves               https:/… class     bird sp.            vogel              
#>  6 Homo sapiens       https:/… species   human               mens               
#>  7 Martes foina       https:/… species   beech marten        steenmarter        
#>  8 Mustela putorius   https:/… species   European polecat    bunzing            
#>  9 Rattus norvegicus  https:/… species   brown rat           bruine rat         
#> 10 Vulpes vulpes      https:/… species   red fox             vos

Filter the observations in the dataset on female mallards (Anas platyrhynchos) and map the number of recorded individuals for each deployment location:

x %>%
  filter_observations(
    scientificName == "Anas platyrhynchos",
    sex == "female"
  ) %>%
  summarize_observations() %>%
  map_summary(feature = "sum_count")

Relation to other R packages

• camtrapdp is a core R package to read and manipulate Camtrap DPs. camtraptor depends on camtrapdp and re-exports a number of functions so that users don’t need to load both packages.
• camtrapR is an analysis R package for camera trap data. camtraptor initially offered a number of functions to transform Camtrap DPs to outputs compatible with camtrapR. These have been superseded, because camtrapR supports reading Camtrap DPs.
• camtrapDensity is a development R package to run single species random encounter models to estimate animal density. camtraptor is a dependency.

Meta

• We welcome contributions including bug reports.
• License: MIT
• Get citation information for camtraptor in R with citation("camtraptor").
• Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.