在 R 的 Shiny 中保存刷过的点
save brushed points in Shiny in R
我有一个代码如下,我想在刷过的点上加一个Save
按钮。非常感谢。
library(shiny)
ui <- basicPage(
plotOutput("plot1", brush = "plot_brush"),
verbatimTextOutput("info")
)
server <- function(input, output) {
x <- NULL
output$plot1 <- renderPlot({
plot(mtcars$wt, mtcars$mpg)
})
output$info <- renderPrint({
x <<- brushedPoints(mtcars, input$plot_brush, xvar = "wt", yvar = "mpg")
x
})
}
shinyApp(ui, server)
单击时添加 actionButton
以保存刷过的数据框。还将 brushedPoints
输出为 reactive
,因此我们可以在代码中多次使用它。
library(shiny)
ui <- basicPage(
plotOutput("plot1", brush = "plot_brush"),
verbatimTextOutput("info"),
actionButton("save", "Save")
)
server <- function(input, output) {
output$plot1 <- renderPlot({
plot(mtcars$wt, mtcars$mpg)
})
data <- reactive({
brushedPoints(mtcars, input$plot_brush, xvar = "wt", yvar = "mpg")
})
output$info <- renderPrint({data()})
observeEvent(input$save, {
write.csv(data(), 'brushed_data.csv', row.names = FALSE)
})
}
shinyApp(ui, server)
我有一个代码如下,我想在刷过的点上加一个Save
按钮。非常感谢。
library(shiny)
ui <- basicPage(
plotOutput("plot1", brush = "plot_brush"),
verbatimTextOutput("info")
)
server <- function(input, output) {
x <- NULL
output$plot1 <- renderPlot({
plot(mtcars$wt, mtcars$mpg)
})
output$info <- renderPrint({
x <<- brushedPoints(mtcars, input$plot_brush, xvar = "wt", yvar = "mpg")
x
})
}
shinyApp(ui, server)
单击时添加 actionButton
以保存刷过的数据框。还将 brushedPoints
输出为 reactive
,因此我们可以在代码中多次使用它。
library(shiny)
ui <- basicPage(
plotOutput("plot1", brush = "plot_brush"),
verbatimTextOutput("info"),
actionButton("save", "Save")
)
server <- function(input, output) {
output$plot1 <- renderPlot({
plot(mtcars$wt, mtcars$mpg)
})
data <- reactive({
brushedPoints(mtcars, input$plot_brush, xvar = "wt", yvar = "mpg")
})
output$info <- renderPrint({data()})
observeEvent(input$save, {
write.csv(data(), 'brushed_data.csv', row.names = FALSE)
})
}
shinyApp(ui, server)