I want to create several wordclouds, using wordcloud
and wordcloud2
packages.
I can create a download for the wordcloud created by the wordcloud
package, but as soon as I render a wordcloud2
-wordcloud, the download button breaks (only allows to download .html instead of .png).
I've added an example to reproduce it:
library("shiny")
library("wordcloud")
library("wordcloud2")
library("tm")
ui <- fluidPage(plotOutput("plot1"), downloadButton('plot1download'))
server <- function(input, output, session) {
output$plot1 <- renderPlot({
wordcloud(data(crude))
})
output$plot2 <- renderWordcloud2({
wordcloud2(demoFreq)
})
output$plot1download <- downloadHandler(
filename = function() {
paste('wordcloud', '.png', sep='')
},
content = function(file) {
device <- function(..., width, height) grDevices::png(...)
ggsave(file, plot = wordcloud(data(crude)), device = device)
}
)
}
shinyApp(ui, server)
The code above works, but if I add another plot (plotOutput("plot2")
), it breaks:
library("shiny")
library("wordcloud")
library("wordcloud2")
library("tm")
ui <- fluidPage(plotOutput("plot1"), downloadButton('plot1download'), wordcloud2Output("plot2"))
server <- function(input, output, session) {
output$plot1 <- renderPlot({
wordcloud(data(crude))
})
output$plot2 <- renderWordcloud2({
wordcloud2(demoFreq)
})
output$plot1download <- downloadHandler(
filename = function() {
paste('wordcloud', '.png', sep='')
},
content = function(file) {
device <- function(..., width, height) grDevices::png(...)
ggsave(file, plot = wordcloud(data(crude)), device = device)
}
)
}
shinyApp(ui, server)
Anyone has an idea why this happens and how to resolve the issue?
This seems to be a bug in the CRAN version of wordcloud2
. Install the development version from GitHub with
remotes::install_github("lchiffon/wordcloud2")
for a fix.