问R/ shiny :从readOGR变成read_sf，有光泽的传单弹出窗口坏了
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Stack Overflow用户

提问于 2020-02-08 04:36:55

回答 1查看 498关注 0票数 0

更新:在下面添加了代码修正和注释，我的弹出窗口正在工作.

这里有一个闪闪发亮的初学者，我有一个慢而闪亮的传单应用程序，所以我一直在使用profvis来寻找瓶颈。使用readOGR加载shapefile数据是主要问题。所以我做了一个改变--使用read_sf--事情要快得多。我所有的点和多边形都显示得很好，但是我的弹出窗口现在不起作用了，我不知道会发生什么。

预期的结果:从readOGR到read_sf的在使用数据填充弹出窗口方面没有任何区别。

结果：标签工作正常，但是弹出窗口根本没有出现.

下面是该应用程序的简化版本。

ui <- fluidPage(

  fluidRow(


    column(3,
           "",

           tags$head(
             tags$style(type='text/css', 
                        ".nav-tabs {font-size: 10px} ")),
            tabsetPanel(id='lefttabsetPanel',selected='placestab',

                       tabPanel(value="placestab",title='PLACES',
                                tags$iframe(name="myiframe2",seamless="seamless",src="http://45.56.98.26:8080/exist/rest/db/madrid/xml/tds-placeography.xml",style='height:95vh; width:25vw')
                       )
   ))
   ,
    column(9,
           "",


  tabsetPanel(id='my_tabsetPanel',
              tabPanel('Global Map',

                       withSpinner(leafletOutput(outputId="mymap",height = "95vh"),color="#cd0000",type = 5)
              )

  )
)
  )
)

server <- function(input,output, session){


# Core wrapping function
  wrap.it <- function(x, len)
  { 
    sapply(x, function(y) paste(strwrap(y, len), 
                                collapse = "\n"), 
           USE.NAMES = FALSE)
  }


### MAP 1
  output$mymap <- renderLeaflet({
    m <- leaflet() %>% 
      addMapPane("toplayer", zIndex=420) %>% addMapPane("layer2",zIndex=410)%>%
      setView(lng=-3.6898447, lat=40.4142174, zoom=3 ) %>%
addTiles(options = providerTileOptions(noWrap = TRUE), group="Open") %>% 

    addCircleMarkers(data = placeography,options = pathOptions(pane = "toplayer"),label=placeography$placename, fillColor="white",stroke = 2, weight=3, color="black",fillOpacity = 1,opacity=1,radius =3,group = "Puntos de interés",

# THIS IS WHAT'S BREAKING WITH read_sf

                     popup = mapply(function(x, y) {
                       HTML(sprintf("<div class='leaflet-popup-scrolled' style='font-size:10px;max-width:200px;max-height:150px; '><b><a href='http://45.56.98.26:8080/exist/rest/db/madrid/xml/tds-placeography.xml#%s' target='myiframe2'>%s</a></b></div>", htmlEscape(x), y))},
                       placeography$placeref,placeography$placename,  SIMPLIFY = F))%>%

      addLayersControl(baseGroups = c("Open"), overlayGroups = c("Puntos de interés"),position = c("topright"),options = layersControlOptions(collapsed = FALSE))

  })
  }

library(shiny)
library(leaflet)
library(rgdal)
library(htmltools)
library(tigris)
library(data.table) 
library(rmapshaper)
library(shinycssloaders)
library(sf)



#POPUPS WORKED FINE WITH READOGR
#placeography <- readOGR("shapefiles/places_points.shp")

#POPUPS NOT WORKING WITH READ_SF
#placeography <- read_sf("shapefiles/places_points.shp",quiet=TRUE)

#MOST POPUPS WORKING WITH THIS READ_SF
placeography <- read_sf("shapefiles/places_points.shp",quiet=TRUE, as_tibble = FALSE,stringsAsFactors=TRUE)

shapefiles (places_points)在这里：http://45.56.98.26/shapefiles/

更新：I通过“使用stringsAsFactors =TRUE”来解决这个问题(上面的例子也适用)：

placeography <- read_sf("shapefiles/places_points.shp",quiet=TRUE,as_tibble = FALSE,stringsAsFactors = TRUE)

不幸的是，我的一个标签(不包括在上面的示例中--参见下面)也使用了geojoin--它需要额外的一步来修复：

placeographyareas<-read_sf("shapefiles/places_areas.shp",quiet=TRUE,as_tibble = FALSE,stringsAsFactors = FALSE)

histpeople<- read.csv("http://45.56.98.26/tds-data/readingmadrid-people-places-hist.csv",header=TRUE,stringsAsFactors = FALSE)

placeographyareashistpeople<-  geo_join(placeographyareas,histpeople,"placeref","placeref", how = "left")

#FIX: CONVERT TO FACTOR AFTER JOIN
placeographyareashistpeople$placeref <- as.factor(placeographyareashistpeople$placeref)