Loading — e_show_loading • echarts4r

Show or hide loading.

Usage

e_show_loading(
  e,
  hide_overlay = TRUE,
  text = "loading",
  color = "#c23531",
  text_color = "#000",
  mask_color = "rgba(255, 255, 255, 0.8)",
  zlevel = 0
)

e_hide_loading(e)

Arguments

e: An echarts4r object as returned by e_charts or a proxy as returned by echarts4rProxy.
hide_overlay: Hides the white overaly that appears in shiny when a plot is recalculating.
text: Text to display.
color: Color of spinner.
text_color: Color of text.
mask_color: Color of mask.
zlevel: Z level.

Details

This only applies to Shiny.

Examples

if (FALSE) {

# no redraw
# no loading
library(shiny)
ui <- fluidPage(
  fluidRow(
    column(12, actionButton("update", "Update"))
  ),
  fluidRow(
    column(12, echarts4rOutput("plot"))
  )
)

server <- function(input, output) {
  data <- eventReactive(input$update, {
    data.frame(
      x = 1:10,
      y = rnorm(10)
    )
  })

  output$plot <- renderEcharts4r({
    data() |>
      e_charts(x) |>
      e_bar(y)
  })
}

if (interactive()) {
  shinyApp(ui, server)
}

# add loading
server <- function(input, output) {
  data <- eventReactive(input$update, {
    Sys.sleep(1) # sleep one second to show loading
    data.frame(
      x = 1:10,
      y = rnorm(10)
    )
  })

  output$plot <- renderEcharts4r({
    data() |>
      e_charts(x) |>
      e_bar(y) |>
      e_show_loading()
  })
}

if (interactive()) {
  shinyApp(ui, server)
}
}