shiny htmlwidget renders blank

1
votes

I have the following shiny app.

server.R

library(radarchart)

shinyServer(function(input, output) {
  output$radar <- renderChartJSRadar({
    scores <- data.frame("Label"=c("Communicator", "Data Wangler", "Programmer",
                                   "Technologist",  "Modeller", "Visualizer"),
                         "Rich" = c(9, 7, 4, 5, 3, 7),
                         "Andy" = c(7, 6, 6, 2, 6, 9),
                         "Aimee" = c(6, 5, 8, 4, 7, 6))
    
    chartJSRadar(scores, maxScale = 10, showToolTipLabel=TRUE)
    
  })
})

ui.R

shinyUI(fluidPage(
  
  
  
  titlePanel("RADARRRRR "),
  
  sidebarLayout(
    sidebarPanel(
      numericInput("obs", "Observations:", 10), width = 4
    ),
    mainPanel(
      chartJSRadarOutput("radar")
    )
  )
))

This app runs with no errors. no R console messages, no chrome console messages and a blank canvas for the plot. I know the plotting library works because I can force it to display into Rstudio. I have also checked to see if the chart.js is in the library and it seems fine.

Any help fixing or ideas for even starting to debug with no error messages are greatly appreciated.

1
javascriptrshinyhtmlwidgets
"...and a blank canvas for the plot": an element with id radar is created but there's just nothing in it? – adilapapaya
<canvas id="radar" class="chartJSRadar html-widget html-widget-output shiny-bound-output" width="908" height="3632" style="visibility: inherit; width: 1009px; height: 4036px;"></canvas> – Bryce Schumacher
oh, its huge. its just way off screen. you fixed it by making me type out my mistake. Thanks! – Bryce Schumacher
was just going to ask you if you'd scrolled down... :) – adilapapaya
I don't know if i have enough reputation to select an answer but you're welcome to type one and i'll try and select it. – Bryce Schumacher

1 Answers

1
votes

Check your canvas in the page. I suspect it's just really huge and you need to scroll down a little to see it.