构建您的第一个仪表板
数据已存为名为 soccer 的数据框。已预定义了 3 个图表:
goals_plot:各球队进球数yellow_plot、red_plot:各球队黄牌/红牌数
这里使用了一些自定义辅助函数:
daytime_fn():获取某场比赛的日期与时间venue_fn():获取某场比赛的球场grp_fn():获取对阵所属的小组team1_fn()、team2_fn():获取球队 1/2 的名称score1_fn()、score2_fn():获取球队 1/2 的进球数
本练习是课程的一部分
使用 shinydashboard 构建仪表板
练习说明
- 在第一页的第 1 至第 3 行中,为各输出填空。
- 在第二页为图形输出填空,其输出 ID 分别为 "goals"、"yellow" 和 "red"。
- 将 UI 与 server 放在一起以渲染 shinydashboard。
交互式实操练习
通过完成这段示例代码来试试这个练习。
body <- dashboardBody(tabItems(
tabItem(tabName = "matchtab",
fluidRow(selectInput("match", "Match number", choices = 1:nrow(soccer)),
infoBoxOutput("daytime"), infoBoxOutput("venue"), infoBoxOutput("grp")),
fluidRow(valueBoxOutput("team1", width = 3), valueBoxOutput("score1", width = 3),
valueBoxOutput("team2", width = 3), valueBoxOutput("score2", width = 3)),
fluidRow(plotOutput("histogram"))),
tabItem(tabName = "statstab",
tabBox(tabPanel("Goals", plotOutput("goals", height = "700px")),
tabPanel("Yellow cards", plotOutput("yellow", height = "700px")),
tabPanel("Red cards", plotOutput("red"))))
))
ui <- dashboardPage(header, sidebar, body)
server <- function(input, output) {
# Fill in outputs in first to third rows of the first page
output$daytime <- renderInfoBox(infoBox("Day and time",
daytime_fn(input$match),
icon = icon("calendar"),
color = "green"))
output$venue <- ___(infoBox("Venue",
venue_fn(input$match),
icon = icon("map"),
color = "green"))
output$___ <- ___(___("Group",
grp_fn(input$match),
color = "green"))
output$team1 <- ___(valueBox("Team 1", team1_fn(input$match), color = "blue"))
output$score1 <- ___(___("# of goals", score1_fn(input$match), color = "blue"))
output$___ <- ___(valueBox("Team 2", team2_fn(input$match), color = "red"))
___ <- ___(valueBox("# of goals", score2_fn(input$match), color = "red"))
output$histogram <- renderPlot(plot_histogram(input$match))
# Fill in outputs in the second page
output$goals <- ___(goals_plot)
output$___ <- ___(yellow_plot)
___ <- ___(red_plot)
}
# Put the UI and server together
___