rglwidget:无法替换之前的3d图

包rglwidget的例子相当复杂;我在下面创建了一个简单的shiny / rglwidget示例.该图显示正常,但每次切换复选框时,浏览器窗口中都会附加一个新图像.

如何更换/覆盖第一个图?

options(rgl.useNULL = TRUE)
library(shiny)
library(rglwidget)
library(rgl)

app = shinyApp(
  ui = bootstrapPage(
      checkboxInput("rescale", "Rescale"),
      rglwidgetOutput("rglPlot")
  ),
  server = function(input, output) {
    output$rglPlot <- renderRglwidget({
      try(rgl.close()) # added following @user2554330
      if (input$rescale) aspect3d(1,1,10) else aspect3d(1,1,1)
      # High level function following @user2554330: same effect
      # plot3d(rnorm(100), rnorm(100), rnorm(100,sd = 0.1), 
      #     col = rainbow(1000))
      spheres3d(rnorm(100), rnorm(100), rnorm(100,sd = 0.1), col = "red",
                radius = 0.1)
      axes3d()
      rglwidget()

    })
  })
runApp(app)

会话信息:

R version 3.2.2 (2015-08-14)
Platform: i386-w64-mingw32/i386 (32-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

locale:
[1] LC_COLLATE=German_Germany.1252  LC_CTYPE=German_Germany.1252   
[3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C                   
[5] LC_TIME=German_Germany.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] rgl_0.95.1429      rglwidget_0.1.1431 shiny_0.12.2      

loaded via a namespace (and not attached):
 [1] htmlwidgets_0.5.1 R6_2.1.1          rsconnect_0.4.1.9 htmltools_0.2.7  
 [5] tools_3.2.2       yaml_2.1.13       Rcpp_0.12.2       knitr_1.11       
 [9] jsonlite_0.9.19   digest_0.6.8      xtable_1.8-0      Cairo_1.5-9      
[13] httpuv_1.3.3      mime_0.4     

最佳答案 它就像rgl一样 – 当你使用低级命令(spheres3d,axes3d)时,它们被添加到现有的图中.如果要替换它,最简单的方法是首先调用rgl.close(). next3d()是另一种可能性,虽然它略有不同.

或者,调用plot3d或persp3d等高级函数.他们在画画前清理窗户.

编辑补充:我上面描述的是应该发生的事情.我看到重复的输出;他们是个错误.我在R-forge的版本0.1.1433中修复了它.

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