悬停时将趋势线数据添加到Shiny Plotly

我正在使用ggplotly()创建一个图,我希望将Spearman的等级相关性[我在这里存储为有效值rho]悬停在{ {1}}。我在plotly网站上找到了一篇文章,介绍了如何在python(https://plot.ly/python/linear-fits/)中执行此操作,但是我不确定如何在R中实现此功能。任何帮助或潜在客户都感激!!

geom_smooth
a3345887 回答:悬停时将趋势线数据添加到Shiny Plotly

您可以添加非官方的美学text

library(shiny)
library(plotly)

ui <- fluidPage(
  mainPanel(plotlyOutput("line_plot"),verbatimTextOutput("rho"))
)

# Define server logic required to draw a histogram
server <- function(input,output) {

  # calculate rho to be printed over line
  rho <- reactive({ cor.test(x = iris$Sepal.Length,y = iris$Sepal.Width,method='spearman')[[4]] })

  output$rho <- renderText(paste0("rho: ",rho()))

  output$line_plot <- renderPlotly({
    p <- ggplotly(
      ggplot(iris,aes(x = Sepal.Length,y = Sepal.Width)) +
        geom_point() +
        geom_smooth(method=lm,se=FALSE,color = "red",aes(text = paste0("<b> rho: </b>",rho()))) +
        theme_minimal()
    ) 
  })

}

# Run the application 
shinyApp(ui = ui,server = server)

Result

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