Grab a route from Google
Route two locations: determine a sequence of steps (legs) between two
locations using the Google Directions API. Note: To use Google's Directions
API, you must first enable the API in the Google Cloud Platform Console. See
?register_google.
route(from, to, mode = c("driving", "walking", "bicycling", "transit"),
structure = c("legs", "route"), output = c("simple", "all"),
alternatives = FALSE, units = "metric", urlonly = FALSE,
override_limit = FALSE, ext = "com", inject = "", ...)
routeQueryCheck()from |
name of origin addresses in a data frame |
to |
name of destination addresses in a data frame |
mode |
driving, bicycling, walking, or transit |
structure |
structure of output, "legs" or "route", see examples |
output |
amount of output ("simple" or "all") |
alternatives |
should more than one route be provided? |
units |
"metric" |
urlonly |
return only the url? |
override_limit |
override the current query count |
ext |
domain extension (e.g. "com", "co.nz") |
inject |
character string to add to the url |
... |
... |
a data frame (output="simple") or all of the geocoded information (output="all")
David Kahle david.kahle@gmail.com
## Not run: requires Google API key, see ?register_google
## basic usage
########################################
from <- "houston, texas"
to <- "waco, texas"
route(from, to, structure = "legs")
route(from, to, structure = "route")
route(from, to, alternatives = TRUE)
## comparison to trek
########################################
(route_df <- route(from, to, structure = "route"))
(trek_df <- trek(from, to, structure = "route"))
qmap("college station, texas", zoom = 8) +
geom_path(
aes(x = lon, y = lat), colour = "red",
size = 1.5, alpha = .5,
data = route_df, lineend = "round"
) +
geom_path(
aes(x = lon, y = lat), colour = "blue",
size = 1.5, alpha = .5,
data = trek_df, lineend = "round"
)
qmap("college station, texas", zoom = 6) +
geom_path(
aes(x = lon, y = lat), colour = "red", size = 1.5,
data = route_df, lineend = "round"
)
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.