R/Shiny/传单:捕获并记录用户';地理位置
使用Easybutton,我在一个闪亮的传单环境中创建了一个按钮,可以将地图缩放和平移到用户的地理位置。一个有效的例子:R/Shiny/传单:捕获并记录用户';地理位置,r,shiny,leaflet,R,Shiny,Leaflet,使用Easybutton,我在一个闪亮的传单环境中创建了一个按钮,可以将地图缩放和平移到用户的地理位置。一个有效的例子: library(shiny) library(leaflet) ui <- fluidPage(leafletOutput("map")) server <- function(input, output, session) { output$map <- renderLeaflet({ leaflet() %>% addProvide
library(shiny)
library(leaflet)
ui <- fluidPage(leafletOutput("map"))
server <- function(input, output, session) {
output$map <- renderLeaflet({
leaflet() %>%
addProviderTiles(providers$Stamen.TonerLite,
options = providerTileOptions(noWrap = TRUE)) %>%
addEasyButton(
easyButton(
position = "topleft",
icon = "fa-crosshairs",
title = "Locate Me",
onClick = JS(
c(
"function(btn, map){map.locate({setView:true,enableHighAccuracy: true })}"
)
)
)
)
})
}
shinyApp(ui,server)
库(闪亮)
图书馆(单张)
ui作为起点,您可以观察地图边界的变化,并返回边界的中心
library(shiny)
library(leaflet)
ui <- fluidPage(leafletOutput("map"))
server <- function(input, output, session) {
output$map <- renderLeaflet({
leaflet() %>%
addProviderTiles(providers$Stamen.TonerLite,
options = providerTileOptions(noWrap = TRUE)) %>%
addEasyButton(
easyButton(
position = "topleft",
icon = "fa-crosshairs",
title = "Locate Me",
onClick = JS(
c(
"function(btn, map){map.locate({setView:true,enableHighAccuracy: true })}"
)
)
)
)
})
observeEvent(input$map_bounds, {
event <- input$map_bounds
lat <- mean(event$north, event$south)
lon <- mean(event$west, event$east)
print(paste0("map center - lat: ", lat, ", lon: ", lon))
})
}
shinyApp(ui,server)
库(闪亮)
图书馆(单张)
ui通过遵循这些过程并添加JavaScript逻辑,我自己找到了另一个机会
您是如何确定输入$map\u界限的?@zacdav-我在查看