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表格為 output 基於 R shiny 中的用戶輸入

[英]Table as output based on user input in R shiny

我想構建一個 R Shiny 應用程序,該應用程序創建一個表格,顯示來自用戶的輸入值並將兩個數字輸入變量的總和相加。

我已經定義了以下輸入

# Define UI for application that returns table based on input values
ui <- fluidPage(

    # Application title
    titlePanel("Jack & Jones battle over the Castle!"),

    # Input
    dateInput('date', "Choose today's date:", value = NULL, min = NULL, max = NULL,
              format = "yyyy-mm-dd", startview = "month", weekstart = 0,
              language = "en", width = NULL),
    numericInput("Score Jack", label = "Submit Score Jack", value = 0, min = 0, max = 300, step = 1, width = '10%'),
    numericInput("Score Jones", label = "Submit Score Jones", value = 0, min = 0, max = 300, step = 1, width = '10%'),
    submitButton("Submit Scores", icon("Submit") , width = NULL)
)

作為 output,我想返回一個表,其中每個輸入都有一個新行,例如三列(日期、得分 Jack、得分 Jones)和表格末尾的一行,以在“提交”時對兩個得分列求和' 按鈕被使用。 我嘗試使用 renderTable function,但到目前為止沒有產生任何結果。 在搜索類似問題時,我找到了使用 DT package 的解決方法。 然而,它似乎已經不存在了。

我是 Shiny 的新手,所以會很感激任何輸入。

在下面找到一個小的工作示例。 您要呈現的數據幀存儲在reactiveValues中(根據Add values to a reactive table in shiny )。 一旦通過observeEvent(...)行單擊按鈕(我變成了一個actionButton並命名為“submitButton”),就會添加一行。

library(shiny)

# Define UI for application that returns table based on input values
ui <- fluidPage(

    # Application title
    titlePanel("Jack & Jones battle over the Castle!"),

    # Input
    dateInput('date', "Choose today's date:", value = NULL, min = NULL, max = NULL,
              format = "yyyy-mm-dd", startview = "month", weekstart = 0,
              language = "en", width = NULL),
    numericInput("scoreJack", label = "Submit Score Jack", value = 0, min = 0, max = 300, step = 1, width = '10%'),
    numericInput("scoreJones", label = "Submit Score Jones", value = 0, min = 0, max = 300, step = 1, width = '10%'),
    actionButton("submitButton", "Submit Scores", icon("Submit") , width = NULL),

    # Output
    tableOutput("table")
)

# Define server logic required to render the table
server <- function(input, output) {
    values <- reactiveValues()
    values$df <- data.frame(data = character(), jack = character(), jones = character())

    observeEvent(input$submitButton, {
        new_row <- data.frame(data = strftime(input$date, "%Y-%m-%d"), jack = input$scoreJack, jones = input$scoreJones)
        values$df <- rbind(values$df, new_row)
    })

    output$table <- renderTable(values$df)
}

# Run the application 
shinyApp(ui = ui, server = server)

這個應用程序添加了一個總分列,它還會自動按日期對數據進行排序,以防萬一用戶沒有按時間順序添加日期。

關於我對總分行的評論,我將總分行的行名設置為“總分”,這會將總分放在最后一行,而不是像 rest 那樣的行號. 總分顯示數據框中最近日期的日期,而不是最后一次用戶輸入的日期。

library(shiny)

ui <- fluidPage(

  # Application title
  titlePanel("Jack & Jones battle over the Castle!"),

  # Input
  dateInput('date', "Choose today's date:", value = NULL, min = NULL, max = NULL,
            format = "yyyy-mm-dd", startview = "month", weekstart = 0,
            language = "en", width = NULL),
  numericInput("Score Jack", label = "Submit Score Jack", value = 0, min = 0, max = 300, step = 1, width = '10%'),
  numericInput("Score Jones", label = "Submit Score Jones", value = 0, min = 0, max = 300, step = 1, width = '10%'),
  actionButton("submit", "Submit Scores", icon("Submit") , width = NULL, style="color: #fff; background-color: #337ab7; border-color: #2e6da4"), 
  DT::DTOutput("score_table")
)

table_data <- data.frame(Date = as.Date(as.character()), `Score Jack` = as.numeric(), `Score Jones` = as.numeric(), check.names = FALSE)

server <- function(input, output, session) {

  tableValues <- reactiveValues(df = data.frame(Date = as.Date(as.character()), `Score Jack` = as.numeric(), `Score Jones` = as.numeric(), check.names = FALSE))


  observeEvent(input$submit, {

    temp <- tableValues$m

    newRow <- data.frame(Date = input$date, `Score Jack` = input$`Score Jack`, `Score Jones` = input$`Score Jones`, check.names = FALSE)


    if(!is.null(temp)) {

      if(isolate(input$date) < temp[nrow(temp), 1]) {
        temp <- rbind(temp, newRow)
        temp <- dplyr::arrange(temp, Date)
      } else {
        temp <- rbind(temp, newRow)
      }
    } else {
      temp <- rbind(temp, newRow)
    }

    tableValues$m <- temp

  })


  output$score_table <- DT::renderDataTable({

    if(!is.null(tableValues$m)){

      table_data <- tableValues$m

      totalScore <- data.frame(Date = table_data[nrow(table_data),1], `Score Jack` =  sum(table_data$`Score Jack`), `Score Jones` = sum(table_data$`Score Jones`), check.names = FALSE)

      table_data <- rbind(table_data, totalScore)

      if(nrow(table_data > 2)){
        table_data <- dplyr::arrange(table_data, Date)
      }
    }
    rownames(table_data)[nrow(table_data)] <- "Score Total"
    table_data

  })

  observe({print(colnames(tableValues$m))})
  observe({print(!is.null(tableValues$m))})

}

shinyApp(ui, server)

在此處輸入圖像描述

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