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我很難與R閃亮中的複選框選項進行交互。我想要的是,如果用戶選擇了複選框選項,那麼圖表應該是與非檢查圖表相比不同的圖表。但是我不能讓即使我已經試了好幾次如何與閃亮的R中的複選框進行交互?
ui.R
它的工作library(shiny)
library(ggplot2)
shinyUI(fluidPage(
# Application title
titlePanel("Demonstration of 2 dropdown menus"),
# Sidebar with a slider input for number of bins
sidebarLayout(
sidebarPanel(
selectInput("element_id1", "select variable for x-axis", c("mpg", "cyl", "disp", "hp", "wt"), selected = "wt"),
selectInput("element_id2", "select variable for x-axis", c("mpg", "cyl", "disp", "hp", "wt"), selected = "mpg"),
checkboxGroupInput("variable", "Variable:", c("stat_smooth()"))
),
# Show a plot of the generated distribution
mainPanel(h3("Outputs"),
textOutput("id1"),
textOutput("id2"),
plotOutput("plt")
)
)
))
server.R
library(shiny)
library(ggplot2)
shinyServer(function(input, output) {
output$id1 <- renderText({
sprintf("You have selected %s on the x-axis", input$element_id1)
})
output$id2 <- renderText({
sprintf("You have selected %s on the y-axis", input$element_id2)
})
output$plt <- renderPlot(
ggplot(mtcars, aes_string(x = input$element_id1, y = input$element_id2)) + geom_point() + ggtitle("ggplot"),
if(input$variable) {
ggplot(mtcars, aes_string(x = input$element_id1, y = input$element_id2)) + geom_point() + geom_smooth() + ggtitle("ggplot")
}
)
})