googleway (version 2.0.0)

add_circles: Add circle

Description

Add circles to a google map

Usage

add_circles(map, data = get_map_data(map), id = NULL, lat = NULL,
  lon = NULL, radius = NULL, draggable = NULL, stroke_colour = NULL,
  stroke_opacity = NULL, stroke_weight = NULL, fill_colour = NULL,
  fill_opacity = NULL, mouse_over = NULL, mouse_over_group = NULL,
  info_window = NULL, layer_id = NULL, z_index = NULL)

Arguments

map

a googleway map object created from google_map()

data

data frame containing at least two columns, one specifying the latitude coordinates, and the other specifying the longitude. If Null, the data passed into google_map() will be used.

id

string specifying the column containing an identifier for a circle

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

radius

either a string specifying the column of data containing the radius of each circle, OR a numeric value specifying the radius of all the circles (radius is expressed in metres)

draggable

string specifying the column of data defining if the circle is 'draggable' (either TRUE or FALSE)

stroke_colour

either a string specifying the column of data containing the stroke colour of each circle, or a valid hexadecimal numeric HTML style to be applied to all the circles

stroke_opacity

either a string specifying the column of data containing the stroke opacity of each circle, or a value between 0 and 1 that will be applied to all the circles

stroke_weight

either a string specifying the column of data containing the stroke weight of each circle, or a number indicating the width of pixels in the line to be applied to all the circles

fill_colour

either a string specifying the column of data containing the fill colour of each circle, or a valid hexadecimal numeric HTML style to be applied to all the cirlces

fill_opacity

either a string specifying the column of data containing the fill opacity of each circle, or a value between 0 and 1 that will be applied to all the circles

mouse_over

string specifying the column of data to display when the mouse rolls over the circle

mouse_over_group

string specifying the column of data specifying which groups of circles to highlight on mouseover

info_window

string specifying the column of data to display in an info window when a circle is clicked

layer_id

single value specifying an id for the layer. layer.

z_index

single value specifying where the circles appear in the layering of the map objects. Layers with a higher z_index appear on top of those with a lower z_index. See details.

Details

z_index values define the order in which objects appear on the map. Those with a higher value appear on top of those with a lower value. The default order of objects is (1 being underneath all other objects)

• 1. Polygon

• 2. Rectangle

• 3. Polyline

• 4. Circle

Markers are always the top layer

Examples

# NOT RUN {
google_map(key = map_key, data = tram_stops) %>%
 add_circles(lat = "stop_lat", lon = "stop_lon")

 
# }