Below is an easy example of shiny app with JavaScript code to help download plots. At the moment the name of downloaded PNG file is "plot.png". I would like to use the element created from htmlOutput("text") to add to the name of PNG file. In this case then the name would be: "2019-01-31 plot.png"
library(shiny)
library(plotly)
library(lubridate)
d <- data.frame(X1 = rnorm(50,mean=50,sd=10),
X2 = rnorm(50,mean=5,sd=1.5),
Y = rnorm(50,mean=200,sd=25))
ui <-fluidPage(
title = 'Download Plotly',
sidebarLayout(
sidebarPanel(
htmlOutput("text"),
selectInput("plot_download", "Select plot to download", choices=list("plot1","plot2")),
actionButton('download_plot', "Download")
),
mainPanel(
plotlyOutput('regPlot'),
plotlyOutput('regPlot2'),
tags$script('
document.getElementById("download_plot").onclick = function() {
var plot = $("#plot_download").val();
if(plot == "plot1"){
var gd = document.getElementById("regPlot");
}else{
var gd = document.getElementById("regPlot2");
}
Plotly.Snapshot.toImage(gd, {format: "png"}).once("success", function(url) {
var a = window.document.createElement("a");
a.href = url;
a.type = "image/png";
a.download = "plot.png";
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
});
}
')
)
)
)
server <- function(input, output, session) {
output$text <- renderUI({
eopm <- Sys.Date() - days(day(Sys.Date()))
HTML(paste(eopm))
})
regPlot11 <- reactive({
plot_ly(d, x = d$X1, y = d$X2, mode = "markers")
})
output$regPlot <- renderPlotly({
regPlot11()
})
regPlot222 <- reactive({
plot_ly(d, x = d$X1, y = d$X2, mode = "markers")
})
output$regPlot2 <- renderPlotly({
regPlot222()
})
}
shinyApp(ui = ui, server = server)
[EDIT] After getting an asnwer from @Stéphane Laurent I am facing an issue with IE, whereas with Firefox works without any Problems. Any ideas, tips are welcome!
