Javascript 将标签自定义为垂直noUiSliderInput中的指数文本格式
我正在我的应用程序中使用垂直Javascript 将标签自定义为垂直noUiSliderInput中的指数文本格式,javascript,r,shiny,nouislider,Javascript,R,Shiny,Nouislider,我正在我的应用程序中使用垂直noUiSliderInput 我想将noUiSliderInput的pips中定义的标签从常规数字替换为10^x的文本字符串,其中x是原始标签 滑块具有以下属性(一些背景信息): 它在我的服务器中构建为uiOutput 它是线性的,但紧邻对数ggplot。因此,如果我的实际数据的范围是0.1(10^-1)到1000(10^-3),我让滑块的值实际上是从-1到3运行的“幂数” 这样,线性滑块可以跟随对数图 最小值和最大值取决于用户从选择输入菜单打开的数据文件中的值范
noUiSliderInput
我想将noUiSliderInput
的pips
中定义的标签从常规数字替换为10^x
的文本字符串,其中x是原始标签
滑块具有以下属性(一些背景信息):
- 它在我的
服务器中构建为
uiOutput
- 它是线性的,但紧邻对数
。因此,如果我的实际数据的范围是0.1(10^-1)到1000(10^-3),我让滑块的值实际上是从-1到3运行的“幂数”ggplot
- 这样,线性滑块可以跟随对数图
- 最小值和最大值取决于用户从
菜单打开的数据文件中的值范围,该菜单加载文件,计算滑块的新最小值和最大值,并使其重新渲染李>选择输入
server <- function(input, output, session) {
values <- reactiveValues(
minimum = 1
)
observeEvent(input$Button1, {
values$minimum <- sample(1:5, 1)
})
observe({ values$maximum <- values$minimum + 5})
output$sliderout <- renderUI({
noUiSliderInput(
inputId = "YOUR_SLIDER_ID",
label = "Slider vertical:",
min = values$minimum,
max = values$maximum,
step = 0.1,
value = values$minimum,
orientation = "vertical",
pips = list(
mode = "range",
density = 10
),
width = "100px", height = "300px"
)})
output$res2 <- renderPrint(input$noui2)
}
library(shiny)
library(shinyWidgets)
ui <- fluidPage(
# includeScript("slider.js"), ## line to open file with javascript
tags$br(),
div(class = 'myslider', uiOutput('sliderout')),
actionButton(inputId = 'Button1', label = 'Change slider'),
verbatimTextOutput(outputId = "res2")
)
server这就是我努力实现的目标。只有一个问题:1000
呈现为1000.000000000002
。我不知道该怎么处理
library(shiny)
library(shinyWidgets)
library(shinyjs)
js <- paste(
"var slider = document.getElementById('noui').noUiSlider;",
"slider.updateOptions({",
" format: wNumb({",
" encoder: function(x){return Math.pow(10,x);}",
" })",
"});",
"slider.pips({",
" mode: 'range',",
" density: 2,",
" format: {",
" to: function(x){return '10^' + x;}",
" }",
"});",
sep = "\n"
)
ui <- fluidPage(
useShinyjs(),
tags$br(),
noUiSliderInput(
inputId = "noui", label = "Slider vertical:",
min = -2, max = 4, step = 1,
value = 0, margin = 100,
orientation = "vertical",
width = "300px", height = "300px"
),
verbatimTextOutput(outputId = "res")
)
server <- function(input, output, session) {
output$res <- renderPrint(input$noui)
observeEvent(input$noui, {
runjs(js)
}, once = TRUE)
}
shinyApp(ui, server)
也就是说,完整的JS代码是:
js <- paste(
"var slider = document.getElementById('noui').noUiSlider;",
"slider.updateOptions({",
" format: wNumb({",
" encoder: function(x){return parseFloat(Math.pow(10,x).toPrecision(2));}",
" })",
"});",
"slider.pips({",
" mode: 'range',",
" density: 2",
"});",
"var pipsValues = $('.noUi-value');",
"pipsValues.each(function(){$(this).html('10<sup>'+$(this).attr('data-value')+'</sup>')});",
sep = "\n"
)
“我不知道如何处理这个问题”-也许是,非常酷的Stephane。我设法解决了您遇到的问题(纯属运气,因为我几乎不懂javascript。“编码器:函数(x){return parseFloat(Math.pow(10,x).toFixed(2));}”,也在考虑这是否可能,但无法解决:document.write(下标:“+txt.sub()+””),以应用于标签,而不是输出10^4“to:function(x){returndocument.write('10'+''+x+'';}”),这会生成上标,但会破坏其余的output@Mark我试图放置上标,未成功。我将重试。对于舍入,您也可以使用toPrecision
而不是toFixed
(我更喜欢这个示例)。
js <- paste(
"var slider = document.getElementById('noui').noUiSlider;",
"slider.updateOptions({",
" format: wNumb({",
" encoder: function(x){return parseFloat(Math.pow(10,x).toPrecision(2));}",
" })",
"});",
"slider.pips({",
" mode: 'range',",
" density: 2",
"});",
"var pipsValues = $('.noUi-value');",
"pipsValues.each(function(){$(this).html('10<sup>'+$(this).attr('data-value')+'</sup>')});",
sep = "\n"
)
library(shiny)
library(shinyWidgets)
library(shinyjs)
js <- function(Min, Max, Start){
sprintf(paste(
"var slider = document.getElementById('noui').noUiSlider;",
"slider.updateOptions({",
" start: %s,",
" range: {min: %s, max: %s},",
" format: wNumb({",
" encoder: function(x){return parseFloat(Math.pow(10,x).toPrecision(2));}",
" })",
"});",
"var pipsValues = $('.noUi-value');",
"pipsValues.each(function(){$(this).html('10<sup>'+$(this).attr('data-value')+'</sup>')});",
sep = "\n"
), Start, Min, Max)
}
ui <- fluidPage(
useShinyjs(),
actionButton("btn", "Sample"),
tags$br(),
noUiSliderInput(
inputId = "noui", label = "Slider vertical:",
min = -2, max = 4, step = 1,
value = 0, margin = 100,
pips = list(mode="range", density=2),
orientation = "vertical",
width = "300px", height = "300px",
behaviour = "tap"
),
verbatimTextOutput(outputId = "res")
)
server <- function(input, output, session) {
Values <- eventReactive(input$btn, {
Min <- sample(-5:5, 1)
Max <- Min + 6
Start <- sample(Min:Max, 1)
list(min = Min, max = Max, start = Start)
}, ignoreNULL = FALSE)
observe({
if(!is.null(input$noui)){
values <- Values()
runjs(js(values$min,values$max,values$start))
}
})
output$res <- renderPrint(input$noui)
}
shinyApp(ui, server)