NEWS in package ‘leaflet’

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Changes in version 2.1.1

BUG FIXES and IMPROVEMENTS

• The default marker icon for 'addMarkers' no longer worked, due to the CDN we were relying on apparently being retired. Fixed by pointing to a new CDN. (#782)
• New behavior from tile.openstreetmap.org caused 'addTiles' default tileset to break when viewed under non-https protocol on recent versions of Chrome. Fixed by always using the https protocol to connect to openstreetmap. (#786)

Changes in version 2.1.0

BUG FIXES and IMPROVEMENTS

• Enable JS function literals (wrapped in 'htmlwidgets::JS()') to be included in arguments to methods invoked on 'leafletProxy' objects. (JS function literals could already be included with methods invoked on 'leaflet' objects, so this change just brings 'leafletProxy' to parity.) (#420)
• Add missing CSS rule to show 'img' in right-pane and left-pane (rstudio/rmarkdown/issues#1949, #770)
• Allow for _hidden_ but not suspended leaflet maps to queue calls (such as add raster images) until they are rendered. If a new leaflet map is created, all pending calls are removed. (#771)

Changes in version 2.0.4.1

FEATURES

• Updated proj4.js to 2.6.2

BUG FIXES and IMPROVEMENTS

• Minor tweaks to example data and tests, required to stay on CRAN
• Fixes broken URL (#742) and updated examples to run from system files (#576) including updated .Rmd and .html docs.

Changes in version 2.0.3

BREAKING CHANGES

• 'data("providers")' and 'data("providers.details")' no longer exist. Please use 'leaflet::providers' and 'leaflet::providers.details'. (#636)

BUG FIXES and IMPROVEMENTS

• Integrated data from 'leaflet.providers' package. See [leaflet.providers](https://rstudio.github.io/leaflet.providers/) for details. (#636)
• Fixed [rstudio/crosstalk#58](https://github.com/rstudio/crosstalk/issues/58), which caused Leaflet maps that used Crosstalk shared data in Shiny apps, to be redrawn at incorrect times.
• invokeRemote() now resolves html dependencies before passing them to shiny::createWebDependency() (#620).
• Upgrade leaflet-provider to 1.4.0, enable more map variants such as CartoDB.Voyager (#567)
• 'sf' objects with 'names' attributes in the 'st_geometry' now visualise correctly (#595)
• GeoJSON objects missing 'properties' can now be displayed (#622)

Changes in version 2.0.2

BUG FIXES and IMPROVEMENTS

• Require viridis >= 0.5.1 to avoid namespace issues with viridisLite (#557)
• Fixed broken mouse events after using leaflet-search from leaflet.extras within shiny applications (#563)
• Use leaflet namespace on 'providers' in 'addMiniMap' to make the function accessible in other packages. Fixes [mtennekes/tmap#231](https://github.com/mtennekes/tmap/issues/231). (#568)
• Require scales >= 1.0.0 to avoid exact color matching issues (#578)

Changes in version 2.0.1

FEATURES

• Added method 'addMapPane' to add custom pane layers to have fine tune control over layer ordering. New feature from within leaflet.js v1.x. (#549)
• Exposed htmlwidgets sizingPolicy in leaflet() (#548)

BUG FIXES and IMPROVEMENTS

• Default marker icon locations will now use unpkg.com instead of the leaflet cdn when using https or file protocols. (#544)
• ‘.leaflet-map-pane' 'z-index' switched to ’auto'. Allows for map panes to appear above the map if they appear later in the dom. (#537)
• Use correct Leaflet.js scale control remove method. (#547)
• Start from world view if using flyTo or flyToBounds. (#552)

Changes in version 2.0.0

BREAKING CHANGES

• Update to latest leaflet.js v1.3.1 (#453, 314616f) Please see https://leafletjs.com/reference-1.3.4.html for the latest documentation
• All plugins updated to versions compatible with leaflet > 1.0 (#458) - jQuery, https://github.com/jquery/jquery - Leaflet (JavaScript library), https://github.com/Leaflet/Leaflet - Leaflet Providers, https://github.com/leaflet-extras/leaflet-providers - leaflet-measure, https://github.com/ljagis/leaflet-measure - Leaflet.Terminator, https://github.com/joergdietrich/Leaflet.Terminator - Leaflet.SimpleGraticule, https://github.com/ablakey/Leaflet.SimpleGraticule - Leaflet.MagnifyingGlass, https://github.com/bbecquet/Leaflet.MagnifyingGlass - Leaflet.MiniMap, https://github.com/Norkart/Leaflet-MiniMap - Leaflet.awesome-markers, https://github.com/lvoogdt/Leaflet.awesome-markers - Leaflet.EasyButton, https://github.com/CliffCloud/Leaflet.EasyButton/ - Proj4Leaflet, https://github.com/kartena/Proj4Leaflet - leaflet-locationfilter, https://github.com/kajic/leaflet-locationfilter - leaflet-omnivore, https://github.com/mapbox/leaflet-omnivore - topojson, https://github.com/topojson/topojson
• Leaflet.label (https://github.com/Leaflet/Leaflet.labelExtension) - 'L.Label' has been adopted within Leaflet.js to 'L.Tooltip' - Tooltips are now displayed with default Leaflet.js styling - In custom javascript extensions, change all '*.bindLabel()' to '*.bindTooltip()'

BUG FIXES AND FEATURES

• Relative protocols are used where possible when adding tiles (#526). In RStudio 1.1.x on linux and windows, a known issue of 'https://' routes fail to load, but works within browsers (rstudio/rstudio#2661).
• Added more providers for 'addProviderTiles()': "OpenStreetMap.CH", "OpenInfraMap", "OpenInfraMap.Power", "OpenInfraMap.Telecom", "OpenInfraMap.Petroleum", "OpenInfraMap.Water", "OpenPtMap", "OpenRailwayMap", "OpenFireMap", "SafeCast". (4aea447)
• 'L.multiPolyline' was absorbed into 'L.polyline', which accepts multiple an array of polyline information. https://leafletjs.com/reference-1.3.4.html#polyline. (#515)
• Fix bug where icons where anchored to the top-center, not center-center (2a60751)
• Fix bug where markers would not appear in self contained knitr files (cc79bc3)
• leaflet-label plugin now L.tooltip in leaflet.js. labelOptions() now translates old options clickable to interactive and noHide to permanent.
• Fix a bug where the default 'addTiles()' would not work with .html files served directly from the filesystem.
• Add 'groupOptions' function. Currently the only option is letting you specify zoom levels at which a group should be visible.
• Fix bug with accessing columns in formulas when the data source is a Crosstalk SharedData object wrapping a spatial data frame or sf object.
• Fix strange wrapping behavior for legend, especially common for Chrome when browser zoom level is not 100%.
• Fix incorrect opacity on NA entry in legend. (PR #425)
• Added support for drag events (#405)
• Ensure type safety of .indexOf(stamp) (#396)
• 'validateCoords()' warns on invalid polygon data (#393)
• Added 'method' argument to 'addRasterImage()' to enable nearest neighbor interpolation when projecting categorical rasters (#462)
• Added an ''auto'' method for 'addRasterImage()'. Projected factor results are coerced into factors. (9accc7e)
• Added 'data' parameter to remaining 'addXXX()' methods, including addLegend. (f273edd, #491, #485)
• Added 'preferCanvas' argument to 'leafletOptions()' (#521)

Changes in version 1.1.0

• Add support for sf. sf, sfc, and sfg classes are supported with POINT, LINESTRING, MULTILINESTRING, POLYGON, and MULTIPOLYGON geometries (note that MULTIPOINT is not currently supported).
• Added support for Crosstalk (https://rstudio.github.io/crosstalk/).
• Added option to highlight polygons, polylines, circles, and rectangles on hover (use highlightOptions parameter).
• Fix behavior when data contains NA points, or zero rows. Previously this would cause an error.
• Added 'popupOptions' parameter to all markers and shape layers.
• Upgraded existing plugins to their respective latest versions and added missing/new functionality from those plugins. (PR #293)
• Added Proj4Leaflet plugin (PR #294).
• Added EasyButton plugin (PR #295).
• Added Graticule plugin (PR #293).
• Color palette improvements. All color palette functions now support viridis palettes ("viridis", "magma", "inferno", and "plasma").
• Color palette functions now support reversing the order in which colors are used, via reverse=TRUE.
• 'colorFactor' no longer interpolates qualitative RColorBrewer palettes, unless the number of factor levels being mapped exceeds the number of colors in the specified RColorBrewer palette. (Issue #300)
• Upgrade leaflet.js to 0.7.7.1 (PR #359)
• Added a way for the Map instance to be instantiated via a factory.

Changes in version 1.0.2

• When used with 'leafletProxy', 'fitBounds' did not return its input object as output, so magrittr chains would break after 'fitBounds' was called.
• Add addMeasure()/removeMeasure() functions to allow users to measure lines and areas, via the leaflet-measure plugin by @ljagis. (PR #171. Thanks, Kenton Russell!)
• Add 'input${mapid}_center' Shiny event.
• Add support for labels on most layers, that show either statically or on hover. (PR #181. Thanks Bhaskar Karambelkar!)
• Add support for markers with configurable colors and icons, via the Leaflet.awesome-markers plugin by @lvoogdt. See '?addAwesomeMarkers'. (PR #184. Great work, Bhaskar!)
• Add support for the Leaflet.Terminator plugin by @joergdietrich. Overlays day and night regions on a map. See '?addTerminator'. (PR #184, thanks Bhaskar!)
• Add support for Leaflet.SimpleGraticule plugin by @ablakey. See '?addSimpleGraticule'. (PR #184, thanks again Bhaskar!)
• Add support for Leaflet.MagnifyingGlass plugin by @bbecquet. Adds a configurable magnifying glass that displays the area under the cursor at an increased zoom level. See '?addMagnifyingGlass'. (PR #184, still Bhaskar!)
• Add support for Leaflet-MiniMap plugin by @Norkart. Adds a mini map to the corner that can be used to see or change the bounds of the main map. See '?addMiniMap'. (PR #184, Bhaskar again!)
• ‘addScaleBar' and related functions added, for showing Leaflet’s built-in scale bar in one of the corners of the map. (PR #201. Thanks Kent Johnson!)

Changes in version 1.0.1

• Fix #242: Compatibility with htmlwidgets 0.6 (thanks byzheng).

Changes in version 1.0.0

• Initial release