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结合 UI/UX 原则进行线框图设计

现在请为您的仪表板进行线框图设计,并应用一些相关原则。请注意,本练习不会渲染任何可视化。

设想您要为 Sally 创建一个仪表板。她的投资组合包含两只股票:Apple (AAPL) 和 Disney (DIS)。您会在她的仪表板中加入哪些内容?

可考虑的变量包括每只股票的每日开盘价与收盘价,分别用 openclose 表示,以及当日最高价与最低价,分别用 highlow 表示。另一个重要变量是当日成交量(即当日成交的股票数量),用 volume 表示。

本练习已为您引入 shinydashboardshiny 库,并提供了一个空的 server() 函数。

本练习是课程的一部分

使用 shinydashboard 构建仪表板

查看课程

交互式实操练习

通过完成这段示例代码来试试这个练习。

library(shinydashboard)
library(shiny)

header <- dashboardHeader(
  title = "Portfolio dashboard for Sally",
  titleWidth = 300
)

sidebar <- dashboardSidebar(
  width = 300,
  sidebarMenu(
    id = "pages",
    menuItem("Historical trends",
             tabName = "historical"),
    menuItem("Profits and Losses (PnLs)", 
             tabName = "profit", 
             icon = icon("money-bill-alt"),
             # Truncate the number in the badge label to 2 decimal places
             badgeLabel = "+2.324815454862%", 
             # Change the badge color to green
             badgeColor = "red")
  )
)

body <- dashboardBody(tabItems(
  tabItem(tabName = "historical",
          fluidRow(box(selectInput("stock", "Select stock symbol", 
                                   choices=c("AAPL", "DIS"))),
                   box("Stock name", width = 6)),
          fluidRow(box("valueBox", "Open", width = 2), 
                   box("valueBox", "High", width = 2),
                   box("valueBox", "Low", width = 2),
                   box("valueBox", "Close", width = 2),
                   box("valueBox", "Volume", width = 2)),
          fluidRow(box("valueBox", "Open % change", width = 2, color = "red"), 
                   box("valueBox", "High % change", width = 2),
                   box("valueBox", "Low % change", width = 2),
                   box("valueBox", "Close % change", width = 2),
                   box("valueBox", "Volume % change", width = 2))),
  tabItem(tabName = "profit",
          fluidRow(box("valueBox", "Account balance", width = 3),
                   box("valueBox",  "Value at Risk (Var)", width = 3),
                   box("valueBox", "Returns", width = 3),
                   box("valueBox", "Profit-to-loss ratio", width = 3)),
          fluidRow(box("PnL chart", width = 12, height = 400)))
)
)

ui <- dashboardPage(header, sidebar, body)
server <- function(input, output){}
shinyApp(ui, server)
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