I am trying to download output from wordcloud2 on shiny. My code is as below:
library(shiny)
library(htmlwidgets)
library(webshot)
ui <- shinyUI(fluidPage(mainPanel(
wordcloud2Output("wordcl"),
downloadButton(outputId = "savecloud"),
downloadButton(outputId = "savecloud2")
)))
server <- shinyServer(function(input, output, session) {
wordcl <- reactive ({
wordcloud2(demoFreq, color = "random-light", backgroundColor = "grey")
})
output$wordcl <- renderWordcloud2({ wordcl() })
##### SOLUTION 1 #########
output$savecloud <- downloadHandler(
filename = "word.png",
content = function(cloud) {
file.copy(wordcl(), cloud)
})
##### SOLUTION 2 ##########
output$savecloud2 <- downloadHandler(
saveWidget(wordcl(), file="temp.html", selfcontained = F),
webshot("temp.html", file = "word2.png",
cliprect = "viewport")
)
})
shinyApp(ui = ui, server = server)
I have tried two styles using downloadhandler as shown in the code but they return empty results.
Any insight on why they downloadhandler doesn't work or redirection on how best to effect the download function will be appreciated.