我正在使用R中的gmapsdistance
包。我有我的API密钥,我熟悉包中的功能。
但是,我想反过来解决问题。而不是仅仅在lat / long之间找到Time
,Distance
和Status
是lat / long的向量,我想输入lat / long,并绘制一个区域可以在3小时或更短的时间内开出的积分。然后我想在Google地图上绘制它。
首先,使用Marimar,FL:25.9840,-80.2821会很棒。
有没有人有这类问题的经验?
答案 0 :(得分:4)
正如评论中所建议的那样,您可以注册Travel Time Platform这样的服务(我在此示例中使用了该服务),并使用他们的API获取可能的目的地。
然后,您可以使用Google地图(在我的googleway套餐中)将其绘制在地图上
appId <- "TravelTime_APP_ID"
apiKey <- "TravelTime_API_KEY"
mapKey <- "GOOGLE_MAPS_API_KEY"
library(httr)
library(googleway)
library(jsonlite)
location <- c(25.9840, -80.2821)
driveTime <- 2 * 60 * 60
## London example
## location <- c(51.507609, -0.128315)
## sign up to http://www.traveltimeplatform.com/ and get an API key
## and use their 'Time Map' API
url <- "http://api.traveltimeapp.com/v4/time-map"
requestBody <- paste0('{
"departure_searches" : [
{"id" : "test",
"coords": {"lat":', location[1], ', "lng":', location[2],' },
"transportation" : {"type" : "driving"} ,
"travel_time" : ', driveTime, ',
"departure_time" : "2017-05-03T08:00:00z"
}
]
}')
res <- httr::POST(url = url,
httr::add_headers('Content-Type' = 'application/json'),
httr::add_headers('Accept' = 'application/json'),
httr::add_headers('X-Application-Id' = appId),
httr::add_headers('X-Api-Key' = apiKey),
body = requestBody,
encode = "json")
res <- jsonlite::fromJSON(as.character(res))
pl <- lapply(res$results$shapes[[1]]$shell, function(x){
googleway::encode_pl(lat = x[['lat']], lon = x[['lng']])
})
df <- data.frame(polyline = unlist(pl))
df_marker <- data.frame(lat = location[1], lon = location[2])
google_map(key = mapKey) %>%
add_markers(data = df_marker) %>%
add_polylines(data = df, polyline = "polyline")
答案 1 :(得分:2)
如果你想在传单中渲染并使用免费的等时服务,这是一个非常简洁的选择。但是距离酒店有2个小时的车程。
devtools::install_github("tarakc02/rmapzen")
library(rmapzen)
Sys.setenv(MAPZEN_KEY = "") # get for free at https://mapzen.com/
marimar <- mz_geocode("Marimar, FL")
isos <- mz_isochrone(
marimar,
costing_model = mz_costing$auto(),
contours = mz_contours(c(60 * 2)) # 2 hours
)
library(leaflet)
leaflet(as_sp(isos)) %>%
addProviderTiles("CartoDB.DarkMatter") %>%
addPolygons(color = ~paste0("#", color), weight = 1)