output_map: Add a map to a webpage
In uva-bi-sdad/community: Community Analysis Framework

output_map

R Documentation

Add a map to a webpage

Description

Adds a Leaflet map to a webpage, based on specified or selected inputs.

Usage

output_map(shapes = NULL, overlays = NULL, color = NULL,
  color_time = NULL, dataview = NULL, id = NULL, click = NULL,
  subto = NULL, background_shapes = NULL, options = list(),
  overlays_from_measures = TRUE, tiles = list(url =
  "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", options = list(maxZoom
  = 19)), attribution = list(name = "OpenStreetMap", url =
  "https://www.openstreetmap.org/copyright"))

Arguments

`shapes`	A list or list of lists specifying GeoJSON files. Each list should have at least a `url` entry (the URL of the file), and will need a `name` entry (associating it with one of the site's datasets) if the site has multiple datasets. The file's features must each have a `properties` field containing an ID found in the data – by default this is assumed to be called `"geoid"`, but this can be specified with an `id_property` entry in the list. For example `shapes = list(name = "data",` `url = "https://example.com/shapes.geojson", id_property = "id")`. A `time` entry can also specify different maps for the same dataset, based on the selected time, along with a `resolution` entry to specify how to match the year; either `"decade"` (default) or `"exact"`.
`overlays`	additional layers to add to the map, based on the selected variable; a list or list of lists with entries at least for `variable` (name of the variable associated with the layer) and `source` (path to the layer file, or a list with entries including `url` and `time`). Entries can also include a `filter` entry, with a list or list of lists of conditions, including entries for `feature` (name of the feature on which to condition entity inclusion), `operator`, and `value`.
`color`	The name of a variable, or id of a variable selector, to be used to color polygons.
`color_time`	The ID of a selector to specify which timepoint of `color` to use.
`dataview`	The ID of an `input_dataview` component.
`id`	Unique ID for the map.
`click`	The ID of an input to set to a clicked polygon's ID.
`subto`	A vector of output IDs to receive hover events from.
`background_shapes`	The name of a dataset (shapes) to show within a selection, regardless of selected dataset. Useful to show lower-level regions within higher-level regions.
`options`	A list of configuration options, potentially extracted from a saved leaflet object (see Leaflet documentation).
`overlays_from_measures`	Logical; if `TRUE`, will look for overlay information in measurement information.
`tiles`	A list or list of lists containing provider information (see leaflet providers; e.g., `list(url = "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"`, `options = list(maxZoom = 19))`).
`attribution`	A list with tile attribution information to be included in a credits section. To add attributions to the map, include them in `tile`'s `options` list.