小编Mun*_*she的帖子

我有原始数据,包括地方的纬度和经度.样本数据如下:

编辑(输入):

structure(list(Lat = c(-33.9409444, -33.9335713, -33.9333906, 
-33.9297826), Lon = c(18.5001774, 18.5033218, 18.518719, 18.5209372
)), .Names = c("Lat", "Lon"), row.names = c(NA, 4L), class = "data.frame")

我想使用这些数据在地图上绘制路线.这是我的R代码:

library(RODBC)
library(leaflet)

ui <- fluidPage(
  titlePanel("South Africa & Lesotho"),
  mainPanel(
    leafletOutput("mymap")
  )
)

server <- function(input, output, session) {
  dbhandle <- odbcDriverConnect('driver={SQL Server};server=localhost\\SQLEXpress;database=OSM;trusted_connection=true')
  res <- sqlQuery(dbhandle, 'select Lat, Lon from OSM2 where Street is not null')
  output$mymap <- renderLeaflet({
    leaflet(res) %>%
      addTiles() %>%
      addPolylines(lat = ~Lat, lng = ~Lon)
  }) 
}

shinyApp(ui, server) …