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Bhaskar Karambelkar
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,7 @@ | ||
| Package: leaflet.extras | ||
| Type: Package | ||
| Title: Extra functionality for leaflet package | ||
| Version: 0.1.3 | ||
| Version: 0.1.4 | ||
| Authors@R: person("Bhaskar", "Karambelkar", email = "[email protected]", | ||
| role = c("aut", "cre")) | ||
| Description: Leaflet Javascript library provides many plugins some of which | ||
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|
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,96 @@ | ||
| # Source https://github.com/TrantorM/leaflet-choroplethTopoJSON | ||
| topoJSONChoroplethDependency <- function() { | ||
| list( | ||
| htmltools::htmlDependency( | ||
| "topojson-choropleth",version = "0.1.0", | ||
| system.file("htmlwidgets/lib/topojson-choropleth", package = "leaflet.extras"), | ||
| script = c("choroplethTopoJSON.min.js","topojson-choropleth-bindings.js") | ||
| ) | ||
| ) | ||
| } | ||
|
|
||
| #' @param map The leaflet map | ||
| #' @param data Geojson or topojson data: either as a list or a string | ||
| #' @param layerId a unique ID for the layer | ||
| #' @param group the group this layer will be added to | ||
| #' @param valueProperty The property to use for coloring | ||
| #' @param popupProperty The property to use for popup content | ||
| #' @param popupOptions The Options for the popup | ||
| #' @param labelProperty The property to use for labelling. | ||
| #' @param labelOptions The Options for the label | ||
| #' @param scale The scale to use from chroma.js | ||
| #' @param steps number of breakes | ||
| #' @param mode q for quantile, e for equidistant, k for k-means | ||
| #' @param colors overrides scale with manual colors | ||
| #' @param stroke whether to draw stroke along the path (e.g. the borders of | ||
| #' polygons or circles) | ||
| #' @param color stroke color | ||
| #' @param weight stroke width in pixels | ||
| #' @param opacity stroke opacity (or layer opacity for tile layers) | ||
| #' circles) | ||
| #' @param fillOpacity fill opacity | ||
| #' @param dashArray a string that defines the stroke | ||
| #' \href{https://developer.mozilla.org/en/SVG/Attribute/stroke-dasharray}{dash | ||
| #' pattern} | ||
| #' @param smoothFactor how much to simplify the polyline on each zoom level | ||
| #' (more means better performance and less accurate representation) | ||
| #' @param noClip whether to disable polyline clipping | ||
| #' @rdname topojson-choropleth | ||
| #' @export | ||
| addTopoJSONChoropleth = function( | ||
| map, data, layerId = NULL, group = NULL, | ||
| valueProperty, | ||
| labelProperty, labelOptions = leaflet::labelOptions(), | ||
| popupProperty, popupOptions = leaflet::popupOptions(), | ||
| scale = c('white','red'), | ||
| steps =5, | ||
| mode = 'q', | ||
| colors = NULL, | ||
| stroke = TRUE, | ||
| color = "#03F", | ||
| weight = 1, | ||
| opacity = 0.5, | ||
| fillOpacity = 0.2, | ||
| dashArray = NULL, | ||
| smoothFactor = 1.0, | ||
| noClip = FALSE | ||
| ) { | ||
| map$dependencies <- c(map$dependencies, | ||
| topoJSONChoroplethDependency()) | ||
| options = list( | ||
| valueProperty=valueProperty, | ||
| popupProperty=popupProperty, | ||
| popupOptions=popupOptions, | ||
| labelProperty=labelProperty, | ||
| labelOptions=labelOptions, | ||
| scale=scale, | ||
| steps=steps, | ||
| mode=mode, | ||
| colors=colors, | ||
| stroke=stroke, | ||
| color=color, | ||
| weight=weight, | ||
| opacity=opacity, | ||
| fillOpacity=fillOpacity, | ||
| dashArray=dashArray, | ||
| smoothFactor=smoothFactor, | ||
| noClip=noClip | ||
| ) | ||
| leaflet::invokeMethod( | ||
| map, leaflet::getMapData(map), 'addTopoJSONChoropleth', | ||
| data, layerId, group, options) | ||
| } | ||
|
|
||
| #' removes the topojson choropleth. | ||
| #' @rdname topojson-choropleth | ||
| #' @export | ||
| removeTopoJSONChoropleth = function(map, layerId) { | ||
| leaflet::invokeMethod(map, leaflet::getMapData(map), 'removeTopoJSONChoropleth', layerId) | ||
| } | ||
|
|
||
| #' clears the topojson choropleth. | ||
| #' @rdname topojson-choropleth | ||
| #' @export | ||
| clearTopoJSONChoropleth = function(map) { | ||
| leaflet::invokeMethod(map, NULL, 'clearTopoJSONChoropleth') | ||
| } |
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