leaflet v2.0.3

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Create Interactive Web Maps with the JavaScript 'Leaflet' Library

Create and customize interactive maps using the 'Leaflet' JavaScript library and the 'htmlwidgets' package. These maps can be used directly from the R console, from 'RStudio', in Shiny applications and R Markdown documents.

Readme

An R Interface to Leaflet Maps

Build Status

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

leaflet's JavaScript build tools use Node.js, along with yarn to manage the JavaScript packages.

Install yarn using the official instructions.

You can test that Node.js and yarn are installed properly by running the following commands:

node --version
yarn --version

To make additions or modifications to the JavaScript htmlwidgets binding layer, you must have all Node.js dependencies installed. Now you can build/minify/lint/test using yarn build, or run in "watch" mode by just running yarn watch. JS sources go into javascript/src and tests go into javascript/tests.

# install dependencies
yarn

# compile
yarn build

# watch
yarn watch

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.

Functions in leaflet

Name Description
breweries91 Selected breweries in Franconia
addScaleBar Add or remove a scale bar
evalFormula Evaluate list members that are formulae, using the map data as the environment (if provided, otherwise the formula environment)
addSimpleGraticule Add a simple Graticule on the map see https://github.com/ablakey/Leaflet.SimpleGraticule
easyButtonState Create an easyButton statestate
iconList Make icon set
gadmCHE Administrative borders of Switzerland (level 1)
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.
filterNULL remove NULL elements from a list
createLeafletMap Legacy functions
colorNumeric Color mapping
addRasterImage Add a raster image as a layer
leaflet-imports Objects imported from other packages
removeControl Remove elements from a map
safeLabel Sanitize textual labels
icons Create a list of icon data
awesomeIcons Create a list of awesome icon data see https://github.com/lvoogdt/Leaflet.awesome-markers
groupOptions Set options on layer groups
leafletProxy Send commands to a Leaflet instance in a Shiny app
leafletDependencies Various leaflet dependency functions for use in downstream packages
getMapData returns the map's data
awesomeIconList Make awesome-icon set
addTerminator Add a daylight layer on top of the map
expandLimits Notifies the map of new latitude/longitude of items of interest on the map
atlStorms2005 Atlantic Ocean storms 2005
expandLimitsBbox Same as expandLimits, but takes a polygon (that presumably has a bbox attr) rather than lat/lng.
validateCoords Utility function to check if a coordinates is valid
showGroup Show or hide layer groups
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
makeIcon Define icon sets
previewColors Color previewing utility
providers Providers
dispatch Extension points for plugins
addControl Graphics elements and layers
makeAwesomeIcon Make Awesome Icon
leafletSizingPolicy Leaflet sizing policy
leafletOutput Wrapper functions for using leaflet in shiny
leaflet Create a Leaflet map widget
mapOptions Set options on a leaflet map object
tileOptions Extra options for map elements and layers
setView Methods to manipulate the map widget
addGraticule Add a Graticule on the map see https://github.com/turban/Leaflet.Graticule
addMeasure Add a measure control to the map.
addAwesomeMarkers Add Awesome Markers
addProviderTiles Add a tile layer from a known map provider
addLegend Add a color legend to a map
addMapPane Add additional panes to leaflet map to control layer order
addLayersControl Add UI controls to switch layers on and off
aaa-test-viztest Visual Testing scripts for vistest
addMiniMap Add a minimap to the Map https://github.com/Norkart/Leaflet-MiniMap
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