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An R Interface to Leaflet Maps

Leaflet is an open-source JavaScript library for interactive maps. This R package makes it easy to create Leaflet maps from R.

library(leaflet)
m = leaflet() %>% addTiles()
m  # a map with the default OSM tile layer

m = m %>% setView(-93.65, 42.0285, zoom = 17)
m

m %>% addPopups(-93.65, 42.0285, 'Here is the <b>Department of Statistics</b>, ISU')

Installation

You can install this package from CRAN, or the development version from Github:

# CRAN version
install.packages('leaflet')

# Or Github version
if (!require('devtools')) install.packages('devtools')
devtools::install_github('rstudio/leaflet')

Documentation

In addition to the usual R package documentation, we also have extensive docs and examples at: http://rstudio.github.io/leaflet You may use Github issues to file bug reports or feature requests, and ask questions on StackOverflow or in the Shiny mailing list.

Development

To make additions or modifications to the JavaScript htmlwidgets binding layer, you must use Grunt to build and test. Please make sure Node.js is installed on your system, then run:

npm install -g grunt-cli
npm install

Now you can build/minify/lint/test using grunt build, or run in "watch" mode by just running grunt. JS sources go into javascript/src and tests go into javascript/tests.

License

This package is licensed to you under the terms of the GNU General Public License version 3 or later.

Copyright 2013-2015 RStudio, Inc.

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Version

Install

install.packages('leaflet')

Monthly Downloads

72,408

Version

2.0.1

License

GPL-3

Maintainer

Last Published

June 4th, 2018

Functions in leaflet (2.0.1)

derivePolygons

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 spatial object
showGroup

Show or hide layer groups
expandLimitsBbox

Same as expandLimits, but takes a polygon (that presumably has a bbox attr) rather than lat/lng.
filterNULL

remove NULL elements from a list
validateCoords

Utility function to check if a coordinates is valid
dispatch

Extension points for plugins
leaflet

Create a Leaflet map widget
leafletDependencies

Various leaflet dependency functions for use in downstream packages
addControl

Graphics elements and layers
getMapData

returns the map's data
gadmCHE

Administrative borders of Switzerland (level 1)
easyButtonState

Create an easyButton statestate
leafletProxy

Send commands to a Leaflet instance in a Shiny app
evalFormula

Evaluate list members that are formulae, using the map data as the environment (if provided, otherwise the formula environment)
setView

Methods to manipulate the map widget
icons

Create a list of icon data
expandLimits

Notifies the map of new latitude/longitude of items of interest on the map
providers

Providers
providers.details

Providers Details
groupOptions

Set options on layer groups
mapOptions

Set options on a leaflet map object
leafletSizingPolicy

Leaflet sizing policy
iconList

Make icon set
leaflet-imports

Objects imported from other packages
previewColors

Color previewing utility
removeControl

Remove elements from a map
makeAwesomeIcon

Make Awesome Icon
makeIcon

Define icon sets
tileOptions

Extra options for map elements and layers
leafletOutput

Wrapper functions for using leaflet in shiny
safeLabel

Sanitize textual labels
addMapPane

Add additional panes to leaflet map to control layer order
addLegend

Add a color legend to a map
addGraticule

addLayersControl

Add UI controls to switch layers on and off
addAwesomeMarkers

Add Awesome Markers
addScaleBar

Add or remove a scale bar
addMiniMap

addProviderTiles

Add a tile layer from a known map provider
addRasterImage

Add a raster image as a layer
addMeasure

Add a measure control to the map.
colorNumeric

Color mapping
breweries91

Selected breweries in Franconia
awesomeIcons

addTerminator

Add a daylight layer on top of the map
derivePoints

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.
atlStorms2005

Atlantic Ocean storms 2005
addSimpleGraticule

awesomeIconList

Make awesome-icon set
createLeafletMap

Legacy functions