闪亮:需要有限的' ylim'值,但没有NA值

时间:2016-11-16 07:15:38

标签: r shiny

我正在尝试设置一个Shiny应用程序,并在MASS包中的menarche数据集上运行以下代码:

##ui.R
library(shiny)
shinyUI(fluidPage(
    titlePanel("Probability of menarche among adolescent girls in Warsaw, 1965"),
    sidebarLayout(
        sidebarPanel(
            sliderInput("men_Age", "What is the age of menarche?", 
                        9, 18, value = 12),
            submitButton("Submit")
        ),
        mainPanel(
            plot("plot1"),
            h3("Probability of menarche:"),
            textOutput("pred1")
        )
    )
))
##server.R
library(shiny)
library(MASS)
data(menarche)
shinyServer(function(input, output) {
    mprob <- glm(cbind(Menarche, Total-Menarche) ~ Age, 
             family = binomial(link = probit), data = menarche)
    modelPred <- reactive({
        menInput <- input$men_Age
        x <- predict(mprob, newdata = data.frame(Age = menInput))
        exp(x)/(1+exp(x))
    })
    output$plot1 <- renderPlot({
        menInput <- input$men_Age
        plot(menarche$Age, menarche$Menarche / menarche$Total, 
             xlab = "Age of menarche onset", ylab = "Pr(Menarche)",
             bty = "n", pch = 16, xlim = c(9, 18), ylim = c(0, 1))
        lines(menarche$Age, mprob$fitted, type = "l", col = "blue", lwd=2)
        points(menInput, modelPred(), pch = 16, col = "blue", cex = 2)
    })
    output$pred1 <- renderText({
      modelPred()
    })
  })

我已单独运行绘图代码并看到它有效。但是,当我尝试运行该应用程序时,我收到的错误是&#34;需要有限的&#39; ylim&#39;值&#34 ;.我设置了有限的ylim值,所以我不知道发生了什么。我读过其他一些提到NA值的帖子,但是月经初潮数据集没有任何NA值。看起来他们根据这个输出被强迫:

Warning in xy.coords(x, y, xlabel, ylabel, log) :
  NAs introduced by coercion
Warning in min(x) : no non-missing arguments to min; returning Inf
Warning in max(x) : no non-missing arguments to max; returning -Inf
Warning: Error in plot.window: need finite 'ylim' values
Stack trace (innermost first):
    57: plot.window
    56: localWindow
    55: plot.default
    54: plot
    53: tag
    52: tags$div
    51: div
    50: mainPanel
    49: sidebarLayout
    48: tag
    47: tags$div
    46: div
    45: tagList
    44: attachDependencies
    43: bootstrapPage
    42: fluidPage
    41: shinyUI
     1: runApp
Error : need finite 'ylim' values

但是从ui和服务器文件中删除对绘图的任何引用都可以让应用程序顺利运行。有谁知道我可能缺少什么?

0 个答案:

没有答案