R plotly 带子图的饼图

Question

我正在尝试制作一个R plotly pie chart subplot ，其中包含两个饼图，每个饼图都有一个标题。 我遵循了本教程Subplots下的示例，只绘制了三个饼图中的两个并为每个饼图添加了一个标题：

library(plotly)
library(dplyr)

fig <- plot_ly()
fig <- fig %>% add_pie(data = count(diamonds, cut), labels = ~cut, values = ~n, textinfo='label+percent', showlegend=F,
                       name = "Cut", domain = list(x = c(0, 0.4), y = c(0.4, 1))) %>%
  layout(title="Cut")
fig <- fig %>% add_pie(data = count(diamonds, color), labels = ~color, values = ~n, textinfo='label+percent', showlegend=F,
                       name = "Color", domain = list(x = c(0.6, 1), y = c(0.4, 1))) %>%
  layout(title="Color")

这使：

它看起来类似于使用plotly subplot function 时出现多个标题的问题（在此处讨论），但在这种情况下未明确调用子图，因此我不确定此处的等效解决方案是什么。

Answer 1

title参数需要在trace调用中：

fig <- plot_ly()
fig <- fig %>% add_pie(data = count(diamonds, cut), labels = ~cut, values = ~n, textinfo='label+percent', showlegend=F, title="Cut",
                       name = "Cut", domain = list(x = c(0, 0.4), y = c(0.4, 1)))
fig <- fig %>% add_pie(data = count(diamonds, color), labels = ~color, values = ~n, textinfo='label+percent', showlegend=F, title="Color",
                       name = "Color", domain = list(x = c(0.6, 1), y = c(0.4, 1)))