derivePoints: Normalize data to a data frame or Spatial object.

In leaflet: Create Interactive Web Maps with the JavaScript 'Leaflet' Library

Normalize data to a data frame or Spatial object.

Description

Given a data object and lng/lat arguments (which may be NULL) [meaning infer from data], formula [which should be evaluated with respect to the data], or vector data [which should be used as-is]) return a lng/lat data frame.

Usage

derivePoints(
  data,
  lng = NULL,
  lat = NULL,
  missingLng = missing(lng),
  missingLat = missing(lat),
  funcName = "f"
)

derivePolygons(
  data,
  lng = NULL,
  lat = NULL,
  missingLng = missing(lng),
  missingLat = missing(lat),
  funcName = "f"
)

Arguments

data	map data
lng, lat	longitude and latitude
missingLng	whether lng is missing
missingLat	whether lat is missing
funcName	Name of calling function (for logging)

Value

• derivePoints() returns a lng/lat data frame.

• derivePolygons() returns a list with bbox attributes.

leaflet documentation built on Sept. 9, 2025, 5:28 p.m.