Label GPS States in an Interactive Leaflet Timeline App
Source:R/grz_label_gps_states.R
grz_label_gps_states.RdLaunches an interactive Shiny + Leaflet app for manual labelling of GPS points as ACTIVE or INACTIVE. Labels are stored in a column and returned to the R session when the user clicks Finish and return.
Usage
grz_label_gps_states(
data,
lon = "lon",
lat = "lat",
time = "time",
id = NULL,
color_by = NULL,
initial_label_col = "label",
tz = "UTC",
display_tz = tz,
start_day_offset = 0L,
time_window = c("all", "day", "week"),
n_animals = NULL,
animal_col = NULL,
max_points_display = NULL,
downsample_display = FALSE,
launch_browser = TRUE
)Arguments
- data
Input data frame or tibble.
- lon
Longitude column name.
- lat
Latitude column name.
- time
Datetime column name.
- id
Optional unique row id column. If NULL, an internal id is created.
- color_by
Optional column used for filtering groups in the sidebar.
- initial_label_col
Label column name to read/write.
- tz
Time zone used to parse time.
- display_tz
Time zone used for display in the app.
- start_day_offset
Integer number of days since the minimum date.
- time_window
One of "all", "day", or "week".
- n_animals
Optional integer to limit number of animals shown.
- animal_col
Optional animal identifier column used with n_animals.
- max_points_display
Optional maximum number of points displayed.
- downsample_display
Logical; if TRUE, deterministic thinning is used when max_points_display is set.
- launch_browser
Logical; passed to shiny::runApp().