How to render outputs of few elements graphs in shiny app

Question

How to render outputs of few elements(graphs) from all elements present in the app?

In simple words, I want to see output change for only 2 charts out of 4 charts.

How to specify charts with and without change of output?

Answer 1

hi Racheal,

You can isolate those outputs which not be rendered using isolate function.

To make the output rendered on some condition use observeEvent() and isolate() functions.

library(shiny)
ui <- fluidPage(
textInput("a","","A"),
actionButton("b")
)
server <-
function(input,output){
output$b <-
renderText({ isolate({ input$a }) })
shinyApp(ui, server)

Or use observeEvent(input$variable, { use condition and use isolate output here } )