Animation in Shiny

[Ellesar1]

I have a problem with getting a hold of the gif file produced by SaveGIF when deploying a Shiny app online. I should mention that I have asked this question on StackOverflow with no success and that Yihui recommended that I ask in here.

Below I show my attempt at an Shiny App. The goal is that the App takes an input dataset with location data and returns an animated gif of these data, either through downloading or rendering. There is probably something about the animation package and/or Shiny's internal file system I do not fathom. I would deeply appreciate a tip for a solution. The basic problem with the below code is that when deployed online it displays the message that "This is alternate text", but when run locally it works fine.

library(shiny) library(animation)

#UI ui <- basicPage( imageOutput("plot1") )

#Server server <- function(input, output) {

data1_reactive <- reactive({ x <- c(1,2,3) y <- c(2,4,5) data_try <- data.frame(x,y) return(data_try) })

output$plot1 <- renderImage({ saveGIF(

for (i in 1:3) { plot(data1_reactive()$x,data1_reactive()$y,type="p",col="black",xlim=c(0,10),ylim=c(0,10),pch=19) lines(data1_reactive()[i,]$x,data1_reactive()[i,]$y,type="p",col="red",xlim=c(0,10),ylim=c(0,10),pch=19)

ani.pause()}, movie.name = 'test.gif', interval = 0.3,ani.width = 1400, ani.height = 900,outdir=tempdir())

# Return a list containing the filename list(src = paste0(tempdir(),"/test.gif"), contentType = 'image/gif', alt = 'This is alternate text' )}, deleteFile = FALSE)

}

shinyApp(ui, server)