问题
I am interested in driving distance and time using the mapdist function in ggmap.
Is this travel time timely updated (real-time traffic information) or constant (travel time is always the same whenever we use "mapdist" for each OD? Thanks!
mapdist(from='18.958011, 72.819789', to='18.958558, 72.831462', mode="driving", output="simple")
I got the information like time:
from to m km miles seconds minutes hours
1 18.958011, 72.819789 18.958558, 72.831462 1304 1.304 0.8103056 241 4.016667 0.06694444
回答1:
This function uses standard google API. There you can find that you would have to specify optional parameter departure_time to your request, to take traffic under consideration.
And if you look into mapdist source code you can see that departure_time is not part of your request (neither as parameter, or default option).
来源：https://stackoverflow.com/questions/26496603/is-time-in-mapdist-function-real-time-travel-time-or-static