R:将Plotly hovermode设置为"比较悬停时的数据"

Question

我正在尝试使用Plotly软件包作为Shiny应用程序的一部分在R中创建堆积区域图表,并希望比较悬停时的数据.但是,由于设计原因,我隐藏了模式栏,因此我需要在我的代码中声明此选项,因为当前只显示最近数据指向光标的悬停.

然而,Plotly为R参考只给出了选项"X"(在x轴工具提示),"Y"(在y轴上工具提示),"最近的"(示出了最近的数据点,将光标的工具提示)和FALSE(禁用工具提示).

有办法做我想做的事吗？请注意,这个问题是相当多的完全相反这一块.

我正在使用的代码是:

plot_ly(data2, 
        x = ~Year,
        y = ~B, 
        name = 'In-centre', 
        type = 'scatter', 
        mode = 'none', 
        fill = 'tozeroy', 
        fillcolor = '#F5FF8D', 
        hoverinfo = 'y') %>%
add_trace(y = ~A, 
          name = 'At home', 
          fillcolor = '#50CB86', 
          hoverinfo = 'y') %>% 
layout(xaxis = list(title = "", 
                    showgrid = FALSE, 
                    tickangle = 270, 
                    dtick = 1, 
                    tickfont = list(size = 11)),
       yaxis = list(title = "", 
                    ticklen = 8, 
                    tickcolor = "#EEEEEE", 
                    range = c(-2, 101), 
                    tick0 = 0, 
                    dtick = 10, 
                    tickfont = list(size = 11)),
       showlegend = TRUE,
       legend = list(x = 0, 
                     y = -0.2, 
                     orientation = "h", 
                     traceorder = "normal"),
        margin = list(t = 25, b = 50, r = 10, l = 40)) %>% 
config(displayModeBar = FALSE)

其中a(简化版)data2是:

Year   A      B
2006   18.0   82.0
2007   19.2   78.3
2008   17.9   80.2
2009   20.1   77.7

Answer 1

添加layout(hovermode = 'compare')到您的代码:

data2 <- read.table(text="
Year   A      B
2006   18.0   82.0
2007   19.2   78.3
2008   17.9   80.2
2009   20.1   77.7
", header=T)

library(plotly)
library(dplyr)
plot_ly(data2, 
        x = ~Year,
        y = ~B, 
        name = 'In-centre', 
        type = 'scatter', 
        mode = 'none', 
        fill = 'tozeroy', 
        fillcolor = '#F5FF8D', 
        hoverinfo = 'y') %>%
add_trace(y = ~A, 
          name = 'At home', 
          fillcolor = '#50CB86', 
          hoverinfo = 'y') %>% 
layout(xaxis = list(title = "", 
                    showgrid = FALSE, 
                    tickangle = 270, 
                    dtick = 1, 
                    tickfont = list(size = 11)),
       yaxis = list(title = "", 
                    ticklen = 8, 
                    tickcolor = "#EEEEEE", 
                    range = c(-2, 101), 
                    tick0 = 0, 
                    dtick = 10, 
                    tickfont = list(size = 11)),
       showlegend = TRUE,
       legend = list(x = 0, 
                     y = -0.2, 
                     orientation = "h", 
                     traceorder = "normal"),
        margin = list(t = 25, b = 50, r = 10, l = 40)) %>% 
config(displayModeBar = FALSE) %>%
layout(hovermode = 'compare')

编辑 @OctavianCorlade给我发了一个关于上面给出的解决方案的重要说明:" 之前提供的答案是有效的,因为任何字符串与可用选项不同都会产生相同的结果.hovermode = 'x'是记录的方法,实现完全相同的结果 " .
因此,根据@OctavianCorlade的建议,可以使用:

layout(hovermode = 'x')