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我正在创建一个以 ggiraph 绘制的网络为中心的 RShiny 应用程序。该网络非常庞大且详细，因此理想情况下我希望它尽可能多地填充页面。

我在让 ggiraph 正确缩放以及 RShiny 中的边距/填充方面遇到了很多问题。我已经用代码做到了这一点，但它仍然留下了大量的空白

library(tidyverse)
library(ggiraph)


dt <- 
  
  structure(list(vName = c("Travel (people, not goods)", "Distribution of goods (logistics)", 
                           "Financial services", "Emergency services", "Employment provision", 
                           "Road conditions and safety", "Clothing provision", "Physical security", 
                           "Goods and services provision", "Observance of religion", "Tourism", 
                           "Social interaction", "Societal hazard regulation", "Law and order", 
                           "Foster social cohesion", "Governance", "Community activities and engagement", 
                           "Communication systems", "Housing provision", "Learning and education", 
                           "Technological hazard regulation", "Recreational activities", 
                           "Ceremonies and services for major life events", "Public health", 
                           "Biological hazard regulation", "Historical and cultural value contribution", 
                           "Animal welfare", "Planning activities", "Food provision", "Waste management", 
                           "Energy supply", "Sanitation provision", "Hydrometeorological hazard regulation", 
                           "Environmental and geohazard regulation", "Clean water", "Environmental conservation", 
                           "Clean air"), x = c(-2.98858409427524, -2.81640877118298, -2.74123849093864, 
                                               -2.65386726001767, -2.28398121105892, -2.14920295612388, -2.00485883548675, 
                                               -1.8515913089343, -1.69008255335043, -1.521051426422, -1.34525026708241, 
                                               -1.08643400771279, -0.897560522159429, -0.704692093555197, -0.508687158038456, 
                                               -0.310418111994458, -0.110767429115102, 0.0893762673942864, 0.28912215997901, 
                                               0.487581201665836, 0.683870073113174, 0.87711511416821, 1.06645621243203, 
                                               1.25105063152523, 1.4300767620147, 1.74479084369789, 1.90363064894277, 
                                               2.05399760378407, 2.19522244146318, 2.32667658577832, 2.44777494880796, 
                                               2.55797853507279, 2.65679684054522, 2.75437446946491, 2.92721942501146, 
                                               2.96449908915101, 2.98858409427524), y = c(-0.261467228242974, 
                                                                                          -1.03336423085163, -1.21885665104493, -1.39892407449664, -1.94510406598975, 
                                                                                          -2.09306632799546, -2.23171258224949, -2.36042572954096, -2.47863288182427, 
                                                                                          -2.58580791208079, -2.68147379605222, -2.79636570335232, -2.86258364228207, 
                                                                                          -2.91606053662828, -2.95655836662271, -2.98389688088342, -2.99795439869375, 
                                                                                          -2.99866835158986, -2.98603556184602, -2.96011225661834, -2.92101381768388, 
                                                                                          -2.86891426788911, -2.80404549659329, -2.72669622755457, -2.63721073385225, 
                                                                                          -2.44043129625646, -2.31866132766425, -2.18657125281782, -2.04474899009546, 
                                                                                          -1.89382577477205, -1.73447334946035, -1.56740097425861, -1.393352269912, 
                                                                                          -1.18887395545529, -0.65680015060565, -0.460157745151427, -0.261467228242978
                                               )), class = "data.frame", row.names = c(NA, -37L))

ui <- 
  
  fillPage(
    
    tags$body(tags$div(id="ppitest", style="width:1in;visible:hidden;padding:0px")),
    
    tags$script('$(document).on("shiny:connected", function(e) {
                                    var w = window.innerWidth;
                                    var h = window.innerHeight;
                                    var d =  document.getElementById("ppitest").offsetWidth;
                                    var obj = {width: w, height: h, dpi: d};
                                    Shiny.onInputChange("pltChange", obj);
                                });
                                $(window).resize(function(e) {
                                    var w = $(this).width();
                                    var h = $(this).height();
                                    var d =  document.getElementById("ppitest").offsetWidth;
                                    var obj = {width: w, height: h, dpi: d};
                                    Shiny.onInputChange("pltChange", obj);
                                });
                            '),
    
girafeOutput("plot")
    
  )

server <- function(input, output, session) {
  
  output$plot <- renderGirafe({
    
    myPlot <- 
      
      dt %>%
      ggplot() + 
      geom_point_interactive(aes(x = x, y = y, tooltip = vName)) +
      coord_equal() +
      theme_void()
    
    return(girafe(code = print(myPlot), 
                  width_svg = (1.0*input$pltChange$width/input$pltChange$dpi),
                  height_svg = (1.0*input$pltChange$height/input$pltChange$dpi)))
    
  })
  
}

shinyApp(ui, server)

在此处输入图像描述

4

1 回答 1

3

在我看来，您想停止重新缩放。见https://davidgohel.github.io/ggiraph/articles/offcran/customizing.html#size-options-1


server <- function(input, output, session) {
  output$plot <- renderGirafe({
    myPlot <-

      dt %>%
      ggplot() +
      geom_point_interactive(aes(x = x, y = y, tooltip = vName)) +
      coord_equal() +
      theme_void()

    return(girafe(
      code = print(myPlot),
      options = list(opts_sizing(rescale = FALSE)),
      width_svg = (1.0 * input$pltChange$width / input$pltChange$dpi),
      height_svg = (1.0 * input$pltChange$height / input$pltChange$dpi)
    ))
  })
}
于 2020-12-12T17:35:27.483 回答