Question

我使用的是Win64，无法在R上安装'闪亮'软件包。尝试安装时，会填充以下消息。有人可以把我放在正确的轨道上，还是我错过了一些真正愚蠢的东西？

> install.packages("shiny")
Installing package into ‘C:/Users/Ayan/Documents/R/win-library/3.0’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
Warning: unable to access index for repository http://ftp.iitm.ac.in/cran/bin/windows/contrib/3.0
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.0
Warning messages:
1: In open.connection(con, "r") : unable to resolve 'cran.r-project.org'
2: package ‘shiny’ is not available (for R version 3.0.2)

我尝试使用India，Cloud（0）作为CRAN镜像

ui.R文件的内容：

library(shiny)

# Define UI for application that plots random distributions 
shinyUI(pageWithSidebar(

# Application title
 headerPanel("Hello Shiny!"),

  # Sidebar with a slider input for number of observations
  sidebarPanel(
    sliderInput("obs", 
            "Number of observations:", 
            min = 1,
            max = 1000, 
            value = 500)
  ),

  # Show a plot of the generated distribution
  mainPanel(
    plotOutput("distPlot")
  )
))

server.R文件的内容：

    library(shiny)

    # Define server logic required to generate and plot a random distribution
shinyServer(function(input, output) {

  # Expression that generates a plot of the distribution. The expression
  # is wrapped in a call to renderPlot to indicate that:
  #
  #  1) It is "reactive" and therefore should be automatically 
  #     re-executed when inputs change
  #  2) Its output type is a plot 
  #
  output$distPlot <- renderPlot({

    # generate an rnorm distribution and plot it
        dist <- rnorm(input$obs)
        hist(dist)
      })
    })

另外，我遇到了安装包'holdOut'以解决分类问题的问题。这就是它所显示的：

> install.packages("holdOut")
Installing package into ‘C:/Users/Ayan/Documents/R/win-library/3.0’
(as ‘lib’ is unspecified)
Warning in install.packages :
  package ‘holdOut’ is not available (for R version 3.0.2)

这两个问题有关系吗？

Answer 1

尝试：

options(repos = c(CRAN = "http://cran.rstudio.com"))
install.packages('shiny')

Answer 2

停止防火墙和防病毒软件，然后安装软件包。它对我有用

无法在R 3.0.2上安装闪亮包

2 个答案: