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library(shiny)
library(plotly)
library(ggplot2)
library(promises)
library(future)
plan(multisession)
ui <- fluidPage(
plotlyOutput("plot1"),
plotlyOutput("plot2"),
plotlyOutput("plot3"),
plotlyOutput("plot4")
)
server <- function(input, output, session) {
output$plot1 <- renderPlotly({
# Async plot_ly
future({ Sys.sleep(2); cars }) %...>%
plot_ly(x = ~speed, y = ~dist, type = "scatter", mode = "markers")
})
output$plot2 <- renderPlotly({
# Async ggplotly
future({ Sys.sleep(2); mtcars }) %...>%
{ ggplot(., aes(hp, mpg)) + geom_point() } %...>%
ggplotly()
})
output$plot3 <- renderPlotly({
# Not async
plot_ly(iris, x = ~Sepal.Length, y = ~Sepal.Width,
type = "scatter", mode = "markers")
})
output$plot4 <- renderPlotly({
# Ensure errors are handled properly (should be blank)
future({}) %...>%
{ req(FALSE) }
})
}
shinyApp(ui, server)
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