更改Plotly Colorbar标题

Question

我试图在绘图散点图中更改颜色条的标题.

看一下文档,看起来这应该是微不足道的.但是,我已经尝试插入colorbar = list(title = "Typing Rate")主plotly()代码,并将其输入layout(),如下所示.

我该如何自定义此标题？

library(dplyr)
library(shiny)
library(plotly)

df <- as.data.frame(list("UserID"=c(1,1,1,1,2,2,2,2), 
                          "Category"=c('A','A','B','B','A','A','B','B'),
                          "Rate"=c(2,3,5,6,8,6,7,1),
                          "x"=c(1,3,5,7,2,4,6,8),
                          "y"=c(1,3,5,7,2,4,6,8)
                    ))

ui <- (fluidPage(
  sidebarLayout(
    sidebarPanel(
      selectInput("userInput","Select User", sort(unique(df$UserID)),
                  selected=1),
      checkboxGroupInput("CategoryInput", "Select Category", sort(unique(df$Category)),
                         selected=c('A','B'))
    ),

    mainPanel(
      plotlyOutput("mainPlot")#,
    )
  )
))

server <- function(input, output, session) {

  # filter for both user and category
  filteredFull <- reactive({
      df %>% 
        filter(
          UserID == input$userInput,
          Category %in% input$CategoryInput
        )
  })

  output$mainPlot <- renderPlotly({
        plot_ly(data=filteredFull(), x=x, y=y,
                       color=Rate, size=Rate,
                       mode='markers') %>%
      layout(
        colorbar = list(title = "Typing Rate")
      )
  })
}

shinyApp(ui, server)

Answer 1

试试这个:

  output$mainPlot <- renderPlotly({     
    m <- list(
  colorbar = list(title = "Typing Rate")
)
        plot_ly(data=filteredFull(), x=x, y=y,
                       color=Rate, size=Rate,
                       mode="markers", marker=m)
  })

更新(带plotly_4.7.1).它也可以这样做:

  output$mainPlot <- renderPlotly({     
        plot_ly(data=filteredFull(), x=x, y=y,
                       color=Rate, size=Rate,
                       mode="markers") %>% colorbar(title = "Typing Rate")
  })