R shinydashboard ——1. 基本用法
Posted jessepeng
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shiny和shinydashboard使用虽然简单,但控件众多,需及时总结归纳。
install.packages("shinydashboard")
shinydashboard的UI包括三部分结构:头header,侧边栏siderbar和主体body:
## ui.R ##
library(shinydashboard)
dashboardPage(
dashboardHeader(),
dashboardSidebar(),
dashboardBody()
)
结合server看下基础结构的效果:
## app.R ##
library(shiny)
library(shinydashboard)
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(),
dashboardBody()
)
server <- function(input, output) { }
shinyApp(ui, server)
添加内容,如在body中添加box:
## app.R ##
library(shinydashboard)
ui <- dashboardPage(
dashboardHeader(title = "Basic dashboard"),
dashboardSidebar(),
dashboardBody(
# Boxes need to be put in a row (or column)
fluidRow(
box(plotOutput("plot1", height = 250)),
box(
title = "Controls",
sliderInput("slider", "Number of observations:", 1, 100, 50)
)
)
)
)
server <- function(input, output) {
set.seed(122)
histdata <- rnorm(500)
output$plot1 <- renderPlot({
data <- histdata[seq_len(input$slider)]
hist(data)
})
}
shinyApp(ui, server)
添加侧边栏内容,如添加菜单项menuItem(和shiny中tabPanel类似):
library(shiny)
library(shinydashboard)
ui <- dashboardPage(
dashboardHeader(title = "Basic dashboard"),
## Sidebar content
dashboardSidebar(
sidebarMenu(
menuItem("Dashboard",tabName = "dashboard",icon = icon("dashboard")), #菜单1
menuItem("Widgets",tabName = "widgets",icon = icon("th"))
) #菜单2
),
## Body content
dashboardBody(
tabItems(
# First tab content 菜单1
tabItem(tabName = "dashboard",
fluidRow(
box(plotOutput("plot1", height = 250)),
box(
title = "Controls",
sliderInput("slider", "Number of observations:", 1, 100, 50)
)
)
),
# Second tab content 菜单2
tabItem(tabName = "widgets",
h2("Widgets tab content")
)
)
)
)
server <- function(input, output){
set.seed(1)
histdata <- rnorm(500)
output$plot1 <- renderPlot({
data <- histdata[seq_len(input$slider)]
hist(data)
})
}
shinyApp(ui, server)
Ref:
https://rstudio.github.io/shinydashboard/get_started.html
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