Add markers

Add markers to a google map

add_markers(map, data = get_map_data(map), id = NULL, colour = NULL,
  lat = NULL, lon = NULL, polyline = NULL, title = NULL,
  draggable = NULL, opacity = NULL, label = NULL,
  info_window = NULL, mouse_over = NULL, mouse_over_group = NULL,
  marker_icon = NULL, layer_id = NULL, cluster = FALSE,
  update_map_view = TRUE, digits = 4, load_interval = 0,
  focus_layer = FALSE, close_info_window = FALSE)

Arguments

map	a googleway map object created from `google_map()`
data	data frame containing the data to use in the layer. If Null, the data passed into `google_map()` will be used.
id	string specifying the column containing an identifier for a shape
colour	string specifying the column containing the 'colour' to use for the markers. One of 'red', 'blue', 'green' or 'lavender'.
lat	string specifying the column of `data` containing the 'latitude' coordinates. If left NULL, a best-guess will be made
lon	string specifying the column of `data` containing the 'longitude' coordinates. If left NULL, a best-guess will be made
polyline	string specifying the column of `data` containing the encoded polyline. For circles and markers the encoded string will represent a single point.
title	string specifying the column of `data` containing the 'title' of the markers. The title is displayed when you hover over a marker. If blank, no title will be displayed for the markers.
draggable	string specifying the column of `data` defining if the marker is 'draggable' (either TRUE or FALSE)
opacity	string specifying the column of `data` defining the 'opacity' of the maker. Values must be between 0 and 1 (inclusive).
label	string specifying the column of `data` defining the character to appear in the centre of the marker. Values will be coerced to strings, and only the first character will be used.
info_window	string specifying the column of data to display in an info window when a shape is clicked.
mouse_over	string specifying the column of data to display when the mouse rolls over the shape
mouse_over_group	string specifying the column of data specifying which groups of shapes to highlight on mouseover
marker_icon	string specifying the column of data containing a link/URL to an image to use for a marker
layer_id	single value specifying an id for the layer. Use this value to distinguish between shape layers for when using any `update_` function, and for separating legends.
cluster	logical indicating if co-located markers should be clustered when the map zoomed out
update_map_view	logical specifying if the map should re-centre according to the shapes
digits	integer. Use this parameter to specify how many digits (decimal places) should be used for the latitude / longitude coordinates.
load_interval	time in miliseconds to wait between plotting each shape
focus_layer	logical indicating if the map should re-centre according to this layer
close_info_window	logical indicating if all `info_windows` should close when the user clicks on the map

Examples

# NOT RUN {
map_key <- "your api key"

google_map(key = map_key, data = tram_stops) %>%
 add_markers(lat = "stop_lat", lon = "stop_lon", info_window = "stop_name")


## using marker icons
iconUrl <- paste0("https://developers.google.com/maps/documentation/",
"javascript/examples/full/images/beachflag.png")

tram_stops$icon <- iconUrl

google_map(key = map_key, data = tram_stops) %>%
  add_markers(lat = "stop_lat", lon = "stop_lon", marker_icon = "icon")

# }

Arguments

Examples

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