google_encode64: Generates digital signatures for Google Maps API calls.
In DerekYves/gcoder: Tools for accessing the Google Maps API

Description Usage Arguments

View source: R/google_encode64.R

This function, primarily, is a helper for drive_time and geocode_url. It is only necessary when building digital signatures with the private cryptographic key associated with your (paid) Google for Work account. To build valid signatures your vector of addresses must be url encoded (see: url_encode and contain "web-safe" UTF-8 characters (see: address_cleaner). For basic geocoding and distance analyses it is generally easier to use drive_time and geocode_url to encode a request with your Google for Work private key. However, and particularly with large batch jobs, it can be useful to inspect the output of this function for malformed values which yield invalid signatures (see the "sigfile" option). The general pattern of this function follows the Google Developer documention for generating a digital signature witgh Python.

1
2
3

google_encode64(address, dest = NULL, gmode = "geocode", privkey = NULL,
  clientid = NULL, debug = FALSE, verbose = FALSE,
  travel_mode = "driving", units = "metric", language = "en-EN")

`address`	A 1xN vector of UTF-8 url encoded addresses (if gmode='dtime', this is the origin address).
`dest`	If gmode is 'dtime', this is the destination address.
`gmode`	character string; must be either "geocode" (the default) or "dtime" (for distance requests).
`privkey`	character string; your Google for Work API key
`clientid`	character string; generally, this ID will be of the form 'gme-[company]'.
`debug`	logical; when TRUE, returns a complete data frame of locations and their associated URL signatures (this can be useful for debugging invalid signatures).
`verbose`	logical; when TRUE, displays additional progress output.
`travel_mode`	character string; currently, valid values include (see this page for details): driving (the default): indicates standard driving directions using the road network. transit: requests directions via public transit routes. walking: requests walking directions via pedestrian paths & sidewalks (where available). bicycling: requests bicycling directions via bicycle paths & preferred streets (currently only available in the US and some Canadian cities).
`units`	character string; must be either "metric" (the default) or "imperial". Specifying "metric" will return distance between origin and destination as kilometers, whereas "imperial" returns distance in miles. For geocode requests this parameter is ignorned if non-null.
`language`	character string; localization of the returned object. This set to "en-EN" by default, but refer to this page for an up-to-date list of all supported languages.