如何使用库“ rworldmap”在Shiny R上绘制地图

Question

虽然我可以将我的数据与Markdown上的rworldmap一起使用来生成漂亮的地图，但无法使用Shiny R来实现相同的地图。请提供帮助。

我的代码段：

# Join data to a map to create a spatialPolygonsDataFrame
sPDF <- joinCountryData2Map(comb_mdata, joinCode='NAME', nameJoinColumn='Country')

par(mai=c(0,0,0.2,0),xaxs="i",yaxs="i")

mapParams <- mapCountryData(sPDF, nameColumnToPlot='Wt.Score',
           mapRegion="world",
           missingCountryCol='dark grey', numCats=10, 
           colourPalette=c('green4','green1','greenyellow','yellow','yellow2','orange','coral','red','red3','red4'),
           addLegend=FALSE,
           oceanCol="light blue")

do.call(addMapLegend, c(mapParams, legendWidth=1.0, legendIntervals="page", legendMar=3))

mtext("[Grey Color: No Data Available]",side=1,line=-41)

Answer 1

终于，我能够解决我的问题，这可能会对有需要的人有所帮助：

ui.R：

mainPanel(
    tabsetPanel(id="tp",
                tabPanel("Map View", plotOutput("mPlot", height="560px", width="950px"))
    )
)

server.R：

# Join data frame 'comb_mdata' to the map
sPDF <- joinCountryData2Map(comb_mdata, joinCode='NAME', nameJoinColumn='Country')

# Generate the Map 
output$mPlot <- renderPlot({
mapParams <- mapPolys(sPDF, nameColumnToPlot='Wt_Score', mapRegion='world',
                           missingCountryCol='dark grey', numCats=10, 
                           colourPalette=c('green4','green1','greenyellow','yellow','yellow2','orange','coral','red','red3','red4'),
                           addLegend=TRUE,
                           oceanCol='light blue')
mtext("[Grey Color: No Data Available]",side=1,line=-1)
})