ggmap route finding - doesn't stay on roads

Question

I am trying to map a route using the route() function in ggmap. My problem is that the route doesn\'t stay on the roads. Is there something that my route_df <- route(or

Answer 1

You can use my googleway package

• get the directions
• decode the polyline (if required)
• plot the route on a Google Map, either as an encoded polyline, or the decoded points

---

library(googleway)

apiKey <- 'your_api_key'
mapKey <- 'your_maps_api_key'

res <- google_directions(origin = "Tinsletown, Vancouver, BC", 
                        destination = "Science World, Vancouver, BC",
                        key = apiKey)

The polyline is in res$routes$overview_polyline$points

You can decode the polyline if you want

pl <- res$routes$overview_polyline$points
decode_pl(pl)
#         lat       lon
# 1  49.28025 -123.1076
# 2  49.27969 -123.1076
# 3  49.27823 -123.1076
# 4  49.27711 -123.1077
# 5  49.27707 -123.1043

But you don't have to, you can plot the line directly

df <- data.frame(polyline = pl)

google_map(key = mapKey, search_box = T) %>%
    add_polylines(data = df, polyline = "polyline")

Note

• It looks like the origin doesn't exist or has moved since the question was asked