Convert ggplot object to plotly in shiny application

Question

I am trying to convert a ggplot object to plotly and show it in a shiny application. But I encountered an error "no applicable method for 'plotly_build' applied to an object of class "NULL""

I was able to return the ggplot object to the shiny application successfully,

output$plot1 <- renderplot({
   gp <- ggplot(data = mtcars, aes(x = disp, y = cyl)) + geom_smooth(method = lm, formula = y~x) + geom_point() + theme_gdocs()
})

but somehow plotly cannot convert it.

My code looks like this

output$plot2 <- renderplotly({
   gp <- ggplot(data = mtcars, aes(x = disp, y = cyl)) + geom_smooth(method = lm, formula = y~x) + geom_point() + theme_gdocs()
   ggplotly()
})

use renderPlotly instead

MLavoie
– MLavoie

2016-06-06 18:00:21 +00:00
Commented Jun 6, 2016 at 18:00 — MLavoie
– MLavoie, Commented Jun 6, 2016 at 18:00

Michael Leahy · Accepted Answer · 2021-04-23 00:16:54Z

41

Try:

library(shiny)
library(ggplot2)
library(ggthemes)
library(plotly)

ui <- fluidPage(  
titlePanel("Plotly"),
sidebarLayout(
sidebarPanel(),
mainPanel(
  plotlyOutput("plot2"))))
  
server <- function(input, output) {

output$plot2 <- renderPlotly({
  ggplotly(
    ggplot(data = mtcars, aes(x = disp, y = cyl)) + 
      geom_smooth(method = lm, formula = y~x) + 
      geom_point() + 
      theme_gdocs())
})
}

shinyApp(ui, server)

edited Apr 23, 2021 at 0:16

Michael Leahy

32 bronze badges

answered Jun 6, 2016 at 18:05

Bryan Goggin

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6 Comments

Bryan Goggin Over a year ago

Sorry about that. give it another try.

athlonshi Over a year ago

It is working now. Actually both ggplotly or print(ggplotly()) work fine. I noticed that I need to restart shiny server in order to make the change (from ggplot to plotly) take effect. I don't know whether this is normal or not but it did cause some inconsistent observation when runing shiny in Rstudio vs on web server.

d8aninja Over a year ago

I had to restart the server as well, yes. However, my plot output is not going to the application in the browser, but is instead rendering in the Rstudio's Viewer tab...any ideas?

Vipin Verma Over a year ago

Same problem here. it is going to the Rstudio's plot instead of browser. useless

dbo Over a year ago

Same here, following @TrivialSpace's tip

|

qwr · Accepted Answer · 2018-12-07 18:07:42Z

26

If it is rendering in the RStudio pane instead of the app, do make sure that you are using plotlyOutput in the UI section as well as renderPlotly in the server section.

edited Dec 7, 2018 at 18:07

qwr

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answered Jul 17, 2018 at 10:09

TrivialSpace

2693 silver badges2 bronze badges

2 Comments

invictus Over a year ago

Doesn't make a difference

Tony Beans Over a year ago

Thanks! exactly what i was missing. This is in the example above but skimmed over it.

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