Function reference • GeoPressureR

Tag

Core functions related to a tag object.

tag_create(): Create a tag object

tag_set_map(): Configure the map of a tag object

tag_update(): Update a tag object

Visualize tag

Print and plot a tag object.

print(<tag>): Print a tag object

plot(<tag>): Plot a tag object

plot_tag_pressure(): Plot pressure data of a tag

plot_tag_light(): Plot light data of a tag

plot_tag_twilight(): Plot twilight data of a tag

plot_tag_acceleration(): Plot acceleration data of a tag

plot_tag_temperature(): Plot temperature data of a tag

Label tag

Core functions related to labelling a tag object.

tag_label(): Label a tag object

tag_label_auto(): Automatic labelling of a tag

tag_label_write(): Write a tag label file

tag_label_read(): Read a tag label file

tag_label_stap(): Create stationary periods from a tag label

Tag utilities

Various utility functions related to a tag object.

tag_assert(): Assert the status of a tag

tag2path(): Extract a path from a tag

tag2map(): Extract a map from a tag

GeoPressure

Core functions of the GeoPressureAPI.

GeoPressure map

Geopositioning based on pressure data.

geopressure_map() geopressure_map_likelihood() geopressure_map_mismatch(): Compute likelihood map from pressure data

geopressure_map_preprocess(): Prepare pressure data for geopositioning

GeoPressure time series

Retrieving time series pressure at a given location.

geopressure_timeseries(): Request and download pressure time series at a given location

GeoLight

Geopositioning based on light data.

geolight_map(): Compute likelihood map from twilight

twilight_create(): Estimate twilight from light data

twilight_label_write(): Write a twilight label file

twilight_label_read(): Read a twilight label file

light2mat(): Format light data into a matrix

Graph

Constructing the Hidden-Markov model with a graph and computing trajectory products.

graph_create(): Create a graph object

Graph movement

Defining the movement model, optionally using wind data and bird morphology.

graph_set_movement(): Define the movement model of a graph

graph_transition(): Compute transition probabilities of a graph

tag_download_wind(): Download flight data

graph_add_wind(): Compute windspeed and airspeed on a graph

bird_create(): Create bird flight traits

print(<bird>): Print a bird object

speed2prob(): Compute probability of a bird speed

edge_add_wind(): Retrieve ERA5 variable along edge

plot_graph_movement(): Plot movement model of a graph

Graph products

Compute the three main products of the Hidden-Markov model.

graph_most_likely(): Compute the most likely trajectory

graph_marginal(): Compute marginal probability map

graph_simulation(): Simulate randomly multiple trajectories

Graph utilities

Utility functions for a graph object

graph_assert(): Assert the status of a graph

print(<graph>): Print a graph object

Map

Container for spatio-temporal (stationary periods) data.

map_create(): Create a map object

print(<map>): Print a map object

plot(<map>): Plot a map object

rast.map(): Construct a SpatRaster from a map

map_expand(): Construct grid from extent and scale

Path

Data.frame of positions defining a bird trajectory.

ind2path(): Create a path from indices of coordinates

path2edge(): Extract the edges of a path from a graph

plot_path(): Plot a path

Pressurepath

Data.frame of pressure time series along a path.

pressurepath_create(): Create a pressurepath

pressurepath_update(): Update a pressurepath

plot_pressurepath(): Plot a pressurepath

path2elevation(): Download ground elevation along a path

Param

List of parameters used in tag and graph.

param_create(): Create a param list

print(<param>): Print a param list

GeoPressureR utilities

General utility functions of the package.

stap2flight(): Compute flights from stationary periods

stap2duration(): Compute duration of stationary periods

speed2bearing(): Compute the bearing of a speed

windsupport(): Compute wind support and drift

geopressureviz(): Start the GeoPressureViz shiny app

GeoPressureR-package GeoPressureR: GeoPressureR: Global positioning by atmospheric pressure.