如何为滑杆（sliderInput）上色？

问题描述

我尝试为R发光中的几个silderInput条制作不同的颜色。它需要css等。我在网上查看，只能找到如何制作一个 silderInput 的方法。如何为不同的条创建几种不同的颜色？

I tried to make different color for a few silderInput bar in R shiny. It requires css etc.I looked online and can only find how to make one silderInput. How can I make create several different color to different bars?

这是我的测试代码。它将以相同的样式显示所有条形：

Here are my testing code. It will show all bar in same style:

 ui <- fluidPage(
   tags$style(type = "text/css", "
              .irs-bar {width: 100%; height: 25px; background: black; border-top: 1px solid black; border-bottom: 1px solid black;}
              .irs-bar-edge {background: black; border: 1px solid black; height: 25px; border-radius: 0px; width: 20px;}
              .irs-line {border: 1px solid black; height: 25px; border-radius: 0px;}
              .irs-grid-text {font-family: 'arial'; color: white; bottom: 17px; z-index: 1;}
              .irs-grid-pol {display: none;}
              .irs-max {font-family: 'arial'; color: black;}
              .irs-min {font-family: 'arial'; color: black;}
              .irs-single {color:black; background:#6666ff;}
              .irs-slider {width: 30px; height: 30px; top: 22px;}

             .irs-bar1 {width: 50%; height: 25px; background: red; border-top: 1px solid black; border-bottom: 1px solid black;}
              .irs-bar-edge1 {background: black; border: 1px solid red; height: 25px; border-radius: 0px; width: 20px;}
              .irs-line1 {border: 1px solid red; height: 25px; border-radius: 0px;}
              .irs-grid-text1 {font-family: 'arial'; color: white; bottom: 17px; z-index: 1;}
              .irs-grid-pol1 {display: none;}
              .irs-max1 {font-family: 'arial'; color: red;}
              .irs-min1 {font-family: 'arial'; color: red;}
              .irs-single1 {color:black; background:#6666ff;}
              .irs-slider1 {width: 30px; height: 30px; top: 22px;}

             "),

  uiOutput("testSlider")
  )

server <- function(input, output, session){
  output$testSlider <- renderUI({
    fluidRow(
      column(width=3,
             box(
               title = "Preferences", width = NULL, status = "primary",
               sliderInput(inputId="test", label=NULL, min=1, max=10, value=5, step = 1, width='100%'),
               sliderInput(inputId="test2", label=NULL, min=1, max=10, value=5, step = 1, width='50%')
             )
      ))
  })
}

shinyApp(ui = ui, server=server)

推荐答案

下面是示例代码，说明了如何修改滑块的样式。

Below is a sample code of how you can modify style of the sliders. You can add your own logic to it.

rm(list = ls())
library(shiny)
ui <- fluidPage(
  # All your styles will go here
  tags$style(HTML(".js-irs-0 .irs-single, .js-irs-0 .irs-bar-edge, .js-irs-0 .irs-bar {background: purple}")),
  tags$style(HTML(".js-irs-1 .irs-single, .js-irs-1 .irs-bar-edge, .js-irs-1 .irs-bar {background: red}")),
  tags$style(HTML(".js-irs-2 .irs-single, .js-irs-2 .irs-bar-edge, .js-irs-2 .irs-bar {background: green}")),

  sliderInput("slider1", "Slider 1",min = 0.1, max = 1, value = 0.4, step = 0.05),
  sliderInput("slider2", "Slider 2",min = 0.1, max = 1, value = 0.4, step = 0.05),
  sliderInput("slider3", "Slider 3",min = 100, max = 20000, value = 5000, step= 200)

)
server <- function(input, output, session){}
shinyApp(ui = ui, server=server)

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