我正在使用 google_directions() 函数生成两个坐标之间的驾驶路线,这些路线是通过单击传单 map 中的不同点生成的。我想显示一些可能的路线,而不是仅显示一条。设置 Alternatives = TRUE 似乎不适合我。我尝试过多个坐标。
key <- "my_key"
#lat1,lon1 generated on first click. lat2,lon2 generated on second click.
df <- google_directions(origin = c(lat1,lon1),
destination = c(lat2,lon2),
key = key,
mode = "driving",
simplify = TRUE,
alternatives = TRUE)
pl <- decode_pl(direction_polyline(df))
leaflet() %>% addTiles() %>% addPolylines(data = pl, lng = ~lon, lat = ~lat,group = "route")
最佳答案
我找到了issue and have uploaded a fix
简而言之,正如您所发现的,alternatives
参数没有正确使用。
如果您安装最新的开发版本,这应该适合您
devtools::install_github("SymbolixAU/googleway")
为了展示它的工作原理,此示例将生成两条路由
library(googleway)
set_key("api_key")
df <- google_directions(origin = "Melbourne Airport, Australia",
destination = "Portsea, Melbourne, Australia",
mode = "driving",
alternatives = TRUE)
df_routes <- data.frame(polyline = direction_polyline(df))
set_key("map_key", api = "map")
google_map() %>%
add_polylines(data = df_routes, polyline = "polyline")
关于r - Googleway R 替代路线,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49102457/