error: argument is not interpretable as logical - ShinyRGL

[ForestCAS]

Hi everyone,

I am try do a app with ShinyRGL and when I run the code the app show me this error: argument is not interpretable as logical

Does someone know why?

require(shiny)

require(shinyRGL)

runApp(list(

  ui = bootstrapPage(

    fileInput('inputdata', 'Input File',accept='.txt'),

    webGLOutput("rglplot")

    ),

  server = function(input, output) {

    

    output$rglplot <- renderWebGL({

      

      mydata<- input$inputdata

      if (is.null(mydata)) 

        return(NULL)       

      

      mydata1<-read.table(mydata$datapath, sep=",", header=T)

      

      require(rgl)

      plot3d(mydata1)

      

    })

  }

))

Thank you so much,

Best Regards

Carlos A. Silva

[Jeff Allen]

I think this is a bug in ShinyRGL. If memory serves, ShinyRGL will try to plot whatever you return as a WebGL scene. So if you don't do something like plot3d() within your renderWebGL() function, it's not going to handle that case properly. It should check to see if you returned NULL before trying to plot the scene.

Feel free to open an issue here: https://github.com/trestletech/shinyRGL/issues and I'll take a look at this (hopefully) shortly.

Best,
Jeff

[Jeff Allen]

Oh, and the sloppy fix would be to create an empty 3D scene (like plot3d(1,1,1) ) inside your if (is.null) before returning. You can strip out the axes and things to create a blank scene, though I don't remember the parameters for rgl off the top of my head.

Jeff Allen

Tuesday, February 11, 2014 10:58 AM

I think this is a bug in ShinyRGL. If memory serves, ShinyRGL will try to plot whatever you return as a WebGL scene. So if you don't do something like plot3d() within your renderWebGL() function, it's not going to handle that case properly. It should check to see if you returned NULL before trying to plot the scene.

Feel free to open an issue here: https://github.com/trestletech/shinyRGL/issues and I'll take a look at this (hopefully) shortly.

Best,
Jeff

On Monday, February 10, 2014 6:22:21 PM UTC-6, ForestCAS wrote:

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[ForestCAS]

Hi Jeff, 

Great! It works well! Thank you so much!

Best Regards

Carlos A. Silva