如何删除与 Shiny 控件小部件的标签相对应的像素?

问题描述

出于绘图目的，我需要将以下两个小部件排列为一组，并需要删除第一个小部件下方的空白区域.非常感谢任何帮助.

For plotting purposes, I need to arrange following two widgets as a group and need to remove the blank space below the first widget. Any help is greatly appreciated.

library(shiny)
plotvars <- c("Cars","Book stores")
ui <- fluidPage(
   sidebarPanel(
      selectInput('plot1xvar', 'Plot 1 - X & Y Variables', plotvars,plotvars[1]),
      selectInput('plot1yvar', '', plotvars,plotvars[2])
   ),
   mainPanel()
)
server <- shinyServer(function(input,output){})
shinyApp(ui, server)

PS:我遇到了在下拉列表中修改字体大小、字体大小、将两个小部件保存在一个块中(即 display:inline-block)等的链接，但与它无关.

PS: I came across links to modify font size, font size in a drop down list, keeping two widgets in a single block (i.e.,display:inline-block),etc, but not with respect to it.

推荐答案

这将删除标签并修改边距:

This removes the label and modifies the margins:

    library(shiny)
    plotvars <- c("Cars","Book stores")
    ui <- fluidPage(
            tags$head(
                    tags$style(
                            HTML(
                                    ".form-group{
                                            margin-bottom: 0px;
                                    }
                                    .selectize-control{
                                            margin-bottom: 0px;
                                    }"
                            )
                    )
            ),
            sidebarPanel(
                    selectInput('plot1xvar', 'Plot 1 - X & Y Variables', plotvars,plotvars[1]),
                    selectInput('plot2yvar', label = NULL, plotvars,plotvars[2])
            ),
            mainPanel()
    )
    server <- shinyServer(function(input,output){})
    shinyApp(ui, server)

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