60 lines
1.2 KiB
R
60 lines
1.2 KiB
R
library(shiny)
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library(apexcharter)
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ui <- fluidPage(
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fluidRow(
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column(
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width = 8, offset = 2,
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tags$h2("Export PNG"),
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actionButton("redraw", "Redraw chart"),
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apexchartOutput("chart"),
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downloadButton("download", "Download PNG"),
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verbatimTextOutput("result"),
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uiOutput(outputId = "image")
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)
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)
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)
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server <- function(input, output, session) {
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output$chart <- renderApexchart({
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input$redraw
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apexchart() %>%
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ax_chart(type = "bar") %>%
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ax_series(
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list(
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name = "Example",
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data = sample(1:100, 5)
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)
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) %>%
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ax_xaxis(
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categories = LETTERS[1:5]
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) %>%
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set_input_export("export")
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})
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output$result <- renderPrint({
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input$export
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})
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output$download <- downloadHandler(
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filename = function() {
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"apexcharts.png"
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},
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content = function(file) {
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img <- input$export$imgURI
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raw <- base64enc::base64decode(what = gsub("data:image/png;base64,", "", img, fixed = TRUE))
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png::writePNG(png::readPNG(raw), file)
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}
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)
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output$image <- renderUI({
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tags$img(src = input$export)
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})
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}
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if (interactive())
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shinyApp(ui, server)
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