Loggerhead Turtle Tracking Data — loggerhead • MARSS

Data used in MARSS vignettes in the MARSS-package. Tracking data from ARGOS tags on eight individual loggerhead turtles, 1997-2006.

Usage

data(loggerhead)
data(loggerheadNoisy)

Format

Data frames "loggerhead" and "loggerheadNoisy" contain the following columns:

turtle: Turtle name.
day: Day of the month (character).
month: Month number (character).
year: Year (character).
lon: Longitude of observation.
lat: Latitude of observation.

Details

Data frame "loggerhead" contains the original latitude and longitude data. Data frame "loggerheadNoisy" has noise added to the lat and lon data to represent data corrupted by errors.

Source

Gray's Reef National Marine Sanctuary (Georgia) and WhaleNet: http://whale.wheelock.edu/whalenet-stuff/stop_cover_archive.html

Examples

str(loggerhead)
#> 'data.frame':	291 obs. of  6 variables:
#>  $ turtle: Factor w/ 8 levels "BigMama","Bruiser",..: 1 1 1 1 1 1 1 1 1 1 ...
#>  $ day   : int  28 28 29 30 31 2 3 4 5 5 ...
#>  $ month : int  5 5 5 5 5 6 6 6 6 6 ...
#>  $ year  : int  2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 ...
#>  $ lon   : num  -81 -80.7 -81 -81 -81 ...
#>  $ lat   : num  31.9 31.6 31.9 31.8 31.9 ...
str(loggerheadNoisy)
#> 'data.frame':	557 obs. of  6 variables:
#>  $ turtle: Factor w/ 8 levels "BigMama","Bruiser",..: 1 1 1 1 1 1 1 1 1 1 ...
#>  $ month : int  5 5 5 5 6 6 6 6 6 6 ...
#>  $ day   : int  28 29 30 31 1 2 3 4 5 6 ...
#>  $ year  : int  2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 ...
#>  $ lon   : num  -81.5 -80.9 -81.3 -81.6 -81.4 ...
#>  $ lat   : num  31.7 32.2 31.7 31.8 32.1 ...