route: Grab a route from Google

Description Usage Arguments Value Author(s) See Also Examples

Description

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.

Usage

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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()

Arguments

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

...

...

Value

a data frame (output="simple") or all of the geocoded information (output="all")

Author(s)

David Kahle david.kahle@gmail.com

See Also

https://developers.google.com/maps/documentation/directions/, trek, legs2route, routeQueryCheck, geom_leg, register_google

Examples

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## 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)

ggmap documentation built on May 1, 2019, 8:22 p.m.