camtrapR (version 2.3.0)

camtrapsMultiSeason: Sample multi-season camera trap station information

Description

Example multi-season camera trap station information table

Usage

data(camtrapsMultiSeason)

Format

A data frame with 7 rows and 8 variables

Details

This is a general example of how information about camera trap stations from multiple seasons are arranged in camtrapR. It contains setup and retrieval dates, coordinates and a season identifier. If more than 1 camera was set up at a station (e.g. 2 cameras facing each other), a camera ID column must be added, with camera-specific information instead of station-specific information. If cameras malfunctioned repeatedly, additional pairs of problem columns can be added, e.g. "Problem2_from" and "Problem2_to" etc..

Note that season 2010 has an additional station (StationD). This is to simulate a situation where a station was not set up during an entire season.

The variables are as follows:

Station	Camera trap station ID
utm_y	y coordinate of station (northing)
utm_x	x coordinate of station (easting)
Setup_date	camera trap setup date
Retrieval_date	camera trap retrieval date
Problem1_from	first day of camera malfunction
Problem1_to	last day of camera malfunction
session	Identified for trapping session / season

Examples

# data were created with the following code:
data(camtraps)

camtraps_season2 <- camtraps

# change 2009 to 2010
camtraps_season2[, "Setup_date"] <- gsub("2009", "2010", camtraps_season2[,
    "Setup_date"])
camtraps_season2[, "Retrieval_date"] <- gsub("2009", "2010", camtraps_season2[,
    "Retrieval_date"])
camtraps_season2[, "Problem1_from"] <- gsub("2009", "2010", camtraps_season2[,
    "Problem1_from"])
camtraps_season2[, "Problem1_to"] <- gsub("2009", "2010", camtraps_season2[,
    "Problem1_to"])

# add an extra station with different dates in session 2010
camtraps_season2 <- rbind(camtraps_season2, NA)
camtraps_season2$Station[4] <- "StationD"
camtraps_season2$utm_y[4] <- 607050
camtraps_season2$utm_x[4] <- 525000
camtraps_season2$Setup_date[4] <- "04/04/2010"
camtraps_season2$Retrieval_date[4] <- "17/06/2010"
camtraps_season2$Problem1_from[4] <- "20/05/2010"
camtraps_season2$Problem1_to[4] <- "30/05/2010"

# add season column
camtraps$session <- 2009
camtraps_season2$session <- 2010

# combine the tables for 2 seasons
camtrapsMultiSeason <- rbind(camtraps, camtraps_season2)