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Coerce an object to clusterTrack data format

Source: R/ctdf.R
as_ctdf.Rd

Converts an object with spatial coordinates and a timestamp column to a standardized sf/data.table-based format used by the clusterTrack package.

Usage

as_ctdf(
  x,
  coords = c("longitude", "latitude"),
  time = "time",
  s_srs = 4326,
  t_srs = "+proj=eqearth",
  ...
)

Arguments

x

A data.frame object.

coords

Character vector of length 2 specifying the coordinate column names. Defaults to c("longitude", "latitude").

time

Name of the time column. Will be renamed to "timestamp" internally.

s_srs

Source spatial reference. Default is EPSG:4326

t_srs

target spatial reference passed to st_transform(). Default is "+proj=eqearth".

...

Currently unused

Value

An object of class ctdf (inherits from sf, data.table).

Note

This is currently a thin wrapper around st_as_sf(), but standardizes timestamp naming, ordering, and geometry column name ("location"). Several dot columns,updated by upstream methods, are added as well.

Examples

data(mini_ruff)
x = as_ctdf(mini_ruff)
plot(x)