R Shiny输出动态表数

Question

我正在编写一个闪亮的应用程序来创建一个包含数据集中每个变量的表的行。变量的数量会因使用而异，理想情况下，应用程序将输出与变量一样多的行和表。我当前的代码正在创建正确数量的行和文本，但正在为所有行重复最后一个表的表数据。我相信在output[[tablename]] 中存储表输出可能不适合创建单独存储的表。下一步将添加一个响应式输入来过滤vardata$category 显示的行。

• 我需要做什么才能在每一行中为表格填充正确的数据？
• 我需要做什么来过滤哪些行显示有反应输入？

此处的代码包含数据示例：

library(shiny)    
variable <- c("Q17r01", "Q17r01", "Q17r01", "Q22r03", "Q22r03", "Q22r03", "Q15r01", "Q15r01", "Q15r01", "S03", "S03", "vAge", "vAge", "vAge", "vAge", "vAge", "vAge")
    responses <- c("A_T", "B_M", "C_B", "A_T", "B_M", "C_B", "A_T", "B_M", "C_B", "Female", "Male", "13 - 17", "18 - 24", "25 - 34", "35 - 44", "45 - 54", "55+")
    grp1 <- c(33, 39, 28, 27, 20, 53, 88, 7, 5, 51, 49, 27, 8, 33, 14, 16, 2)
    grp2 <- c(42, 46, 12,41, 45, 13, 64, 32, 4, 44, 56, 9, 22, 39, 13, 12, 4)
    xAgg <- c(32, 49, 19, 26, 48, 26, 51, 38, 11, 45, 55, 12, 16, 30, 17, 14, 11)
    chartdata <- data.frame(variable,responses,grp1,grp2,xAgg,row.names=NULL)

    profvars <- unique(variable)
    varlabel <- c("Q17r01_I_am_overwhelmed_by_the_number_of_apps_available_for_download", "Q22r03_I_feel_overwhelmed_by_the_number_of_digital_communications_I_receive",
                  "Q15r01_When_I_receive_a_message_online_I_tend_to_respond_right_away", "S03_Please_indicate_your_gender", "vAge_Age_breakdown")
    category <- c("a_Causes_of_Stress", "a_Causes_of_Stress", "a_Communication_Availability", "zz_Demo", "zz_Demo")
    vardata <- data.frame(profvars,varlabel,category,row.names=NULL)

    chartdatasplit <- split(chartdata, chartdata$variable)


    server <- function(input, output) {

    assigntables <- reactive({
      for (vars in profvars){
        local({
          var <- vars
          tablename <- paste0("table.",var)
          assign("tabledata",chartdatasplit[[var]],pos=1)  
          output[[tablename]] <- renderTable({tabledata}) ###appears this is only being done for last table
        })
      }
    })

      output$AllVars <- renderUI({
        ##for (i_var in 1:nrow(vardata)) {
        assigntables()
        return(apply(vardata,1,function(vars){
          fluidRow(column(12,offset=1,
            tableOutput(paste("table.",vars['profvars'],sep=''))),
            hr()
          )
        }))
      })
    }

    ui <- navbarPage("Seg Run",
                     tabPanel("Summary",
                              uiOutput("AllVars")
                     )
    )

    shinyApp(ui = ui, server = server)

Answer 1

我们开始吧：

library(shiny)
library(xtable)

variable <- c("Q17r01", "Q17r01", "Q17r01", "Q22r03", "Q22r03", "Q22r03", "Q15r01", "Q15r01", "Q15r01", "S03", "S03", "vAge", "vAge", "vAge", "vAge", "vAge", "vAge")
responses <- c("A_T", "B_M", "C_B", "A_T", "B_M", "C_B", "A_T", "B_M", "C_B", "Female", "Male", "13 - 17", "18 - 24", "25 - 34", "35 - 44", "45 - 54", "55+")
grp1 <- c(33, 39, 28, 27, 20, 53, 88, 7, 5, 51, 49, 27, 8, 33, 14, 16, 2)
grp2 <- c(42, 46, 12,41, 45, 13, 64, 32, 4, 44, 56, 9, 22, 39, 13, 12, 4)
xAgg <- c(32, 49, 19, 26, 48, 26, 51, 38, 11, 45, 55, 12, 16, 30, 17, 14, 11)
chartdata <- data.frame(variable,responses,grp1,grp2,xAgg,row.names=NULL)

profvars <- unique(variable)
varlabel <- c("Q17r01_I_am_overwhelmed_by_the_number_of_apps_available_for_download", "Q22r03_I_feel_overwhelmed_by_the_number_of_digital_communications_I_receive",
              "Q15r01_When_I_receive_a_message_online_I_tend_to_respond_right_away", "S03_Please_indicate_your_gender", "vAge_Age_breakdown")
category <- c("a_Causes_of_Stress", "a_Causes_of_Stress", "a_Communication_Availability", "zz_Demo", "zz_Demo")
vardata <- data.frame(profvars,varlabel,category,row.names=NULL)

chartdatasplit <- split(chartdata, chartdata$variable)


server <- function(input, output) {

  tableize <- function(chartdatasplit){  ###can add additional arguments like dimension - add to where this is called also and how tabledata indexes
    tables <- list()
    for (x in names(chartdatasplit)){ ##go through all individually stored variable data frames in chartdatasplit list
      tabledata <- chartdatasplit[[x]]  ###function that returns a dataframe to use in table
      tables[[as.character(x)]] <- 
        print(xtable(tabledata, caption=paste("Variable:",x)),
           type="html", include.rownames = FALSE,
           html.table.attributes='class="data table table-bordered table-condensed"',
           caption.placement="top")
    }
    return(lapply(tables,paste))    
  }

  output$tables <- renderUI({
    out <- unlist(tableize(chartdatasplit))
      return(div(HTML(out),class="shiny-html-output"))
  })
} 

ui <- shinyUI(fluidPage(

  uiOutput("tables")
))


shinyApp(ui = ui, server = server)