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SDLfilter

Filtering and Assessing the Sample Size of Tracking Data

Functions to filter GPS/Argos locations, as well as assessing the sample size for the analysis of animal distributions. The filters remove temporal and spatial duplicates, fixes located at a given height from estimated high tide line, and locations with high error as described in Shimada et al. (2012) <doi:10.3354/meps09747> and Shimada et al. (2016) <doi:10.1007/s00227-015-2771-0>. Sample size for the analysis of animal distributions can be assessed by the conventional area-based approach or the alternative probability-based approach as described in Shimada et al. (2021) <doi:10.1111/2041-210X.13506>.

Functions (29)

A map of Australia

SandyStrait

A map of Sandy Strait, Australia

Horizontal asymptotes of rational functions

Bathymetry model for Sandy Strait, Australia

Cumulative analysis of collective areas by bootstrapping

boot_overlap

Bootstrap overlaps between Utilisation Distributions (UDs)

Filter locations using a data driven filter

ddfilter_loop

Filter locations by quality index, inner angle, and speed

ddfilter_speed

Filter locations by speed

depthfilter

Filter locations by water depth

Filter locations by distance

Filter temporal and/or spatial duplicates

dupfilter_exact

Filter temporally and spatially exact duplicates

dupfilter_qi

Filter temporal duplicates by quality index

dupfilter_space

Filter spatial duplicates

dupfilter_time

Filter temporal duplicates

Flatback turtle tracking data

Generate KML from locations

Plot location data on a map

percent_vol

UD percent volume

Tidal plane table for Sandy Strait, Australia

Tidal data for Sandy Strait, Australia

track_param

Calculate parameters between locations

Green turtle tracking data

Green turtle tracking data 2

A matrix containing probability distributions of flatback turtles

A list of raster data containing probability distributions of flatback turtles

vmax

Estimate maximum linear speed

Estimate maximum one-way linear speed of a loop trip

SDLfilter

Filtering and Assessing the Sample Size of Tracking Data

v2.1.0

GPL-2 | file LICENSE

Authors

Takahiro Shimada

Initial release

2021-04-02

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