When put two ldavis output into one shinyapp, the second one cannot be reactive?

[robinlish]

Thank you for your answers in advance!

The following is an example:

library(LDAvis)
library(shiny)

server <- shinyServer(function(input, output, session) {
output$myChart <- renderVis({
with(TwentyNewsgroups,
createJSON(phi, theta, doc.length, vocab, term.frequency,
R = input$nTerms))})

output$myChart1 <- renderVis({
with(TwentyNewsgroups,
createJSON(phi, theta, doc.length, vocab, term.frequency,
R = input$nTerms))})
})

ui <- shinyUI(
fluidPage(
sliderInput("nTerms", "Number of terms to display", min = 20, max = 40, value = 30),
visOutput('myChart'),
sliderInput("nTerms", "Number of terms to display", min = 20, max = 40, value = 30),
visOutput('myChart1')
)
)

shinyApp(ui = ui, server = server)

[harelhan]

I am also running into the exact same issues. I also ran the above code and noticed that the lambda slider for second output is linked to the first output only. Seems like Lambda slider component doesn't know which output has made the call.

[harelhan]

Hi @cpsievert Sorry to bug you. Just read on some other issues that issue of multiple outputs to Shiny has been fixed. Wanted to confirm you if that is indeed the case as I still am getting the same error.

Thanks
Hitesh

[ismirsehregal]

Fixed your slider id's:

library(LDAvis)
library(shiny)

ui <- shinyUI(
  fluidPage(
    sliderInput("nTerms1", "Number of terms to display", min = 20, max = 40, value = 30),
    visOutput('myChart1'),
    sliderInput("nTerms2", "Number of terms to display", min = 20, max = 40, value = 30),
    visOutput('myChart2')
  )
)

server <- shinyServer(function(input, output, session) {
  output$myChart1 <- renderVis({
    with(TwentyNewsgroups,
         createJSON(phi, theta, doc.length, vocab, term.frequency,
                    R = input$nTerms1))})
  
  output$myChart2 <- renderVis({
    with(TwentyNewsgroups,
         createJSON(phi, theta, doc.length, vocab, term.frequency,
                    R = input$nTerms2))})
})

shinyApp(ui = ui, server = server)

This is what happens: