CODEWITHSUNDEEP
rshiny
Erik Westlund
Erik Westlund

Reputation: 556

How to include a variable inline

This seems like it should be easy, but I'd like to include a variable created in server.R in a sentence in UI.R.

For example, server.r:

averageSampleSize <- reactive({
    round(mean(sampleSizes()), 2)
})

In server.R I'd access this as averageSampleSize()

I want to display this in the UI within a sentence, e.g., "Given the settings, across simulations the average sample size required is XXX"

I tried stuff like including in Server.r:

output$averageSampleSize <- renderText({averageSampleSize()})

And in ui.R:

HTML("Given blah blah ...", textOutput("averageSampleSize")

No luck. The last approach gives me cruft about how the variable is stored (list, etc.)

This seems really simple, but I can't figure it out.

Upvotes: 0

Views: 79

Answers (1)

agstudy
agstudy

Reputation: 121618

For example:

library(shiny)

sampleSizes <- reactive(runif(100))
runApp(list(ui=bootstrapPage(
            textOutput("averageSampleSize")),
            server=function(input,output){
              averageSize <- reactive({
                round(mean(sampleSizes()), 2)
              })
               output$averageSampleSize <- renderText({paste('res=',averageSize())})
            }))

Upvotes: 1

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