Methods to manipulate the map widget

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Description

A series of methods to manipulate the map.

Usage

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setView(map, lng, lat, zoom, options = list())

fitBounds(map, lng1, lat1, lng2, lat2)

setMaxBounds(map, lng1, lat1, lng2, lat2)

clearBounds(map)

Arguments

map

a map widget object created from leaflet()

lng

The longitude of the map center

lat

The latitude of the map center

zoom

the zoom level

options

a list of zoom/pan options (see http://leafletjs.com/reference.html#map-zoompanoptions)

lng1, lat1, lng2, lat2

the coordinates of the map bounds

Value

The modified map widget.

Functions

  • setView: Set the view of the map (center and zoom level)

  • fitBounds: Set the bounds of a map

  • setMaxBounds: Restricts the map view to the given bounds

  • clearBounds: Clear the bounds of a map, and the bounds will be automatically determined from latitudes and longitudes of the map elements if available (otherwise the full world view is used)

References

http://leafletjs.com/reference.html#map-set-methods

Examples

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library(leaflet)
m = leaflet() %>% addTiles() %>% setView(-71.0382679, 42.3489054, zoom = 18)
m  # the RStudio 'headquarter'
m %>% fitBounds(-72, 40, -70, 43)
m %>% clearBounds()  # world view