Plotly Gantt Chart，悬停在酒吧内

Question

甘特图的Plotly示例（示例在此处：https://plot.ly/python/gantt/，https://plot.ly/r/gantt/）仅显示悬停文本在终点的上方（或附近）酒吧。

悬停在栏内时是否可以显示悬停文字？

我尝试添加：hoveron = "points+fills"（使用R版本），但这没有帮助。

谢谢，Erwin

Answer 1

尝试在layout中设置hovermode = "y"，以便在鼠标光标位于条形图上时获取悬停切换弹出窗口。

来自here的修改示例。

library(plotly)
df <- read.csv("https://cdn.rawgit.com/plotly/datasets/master/GanttChart-updated.csv", stringsAsFactors = F)
df$Start <- as.Date(df$Start, format = "%m/%d/%Y")
client = "Sample Client"
p <- plot_ly() %>% layout(hovermode = "y")

for(i in 1:(nrow(df) - 1)){
  p <- add_trace(p,
                 x = c(df$Start[i], df$Start[i] + df$Duration[i]),
                 y = c(i, i),
                 type = "scatter",
                 mode = "lines",
                 line = list(width = 20),
                 showlegend = F,
                 hoverinfo = "text",
                 text = paste("Task: ", df$Task[i], "<br>",
                              "Duration: ", df$Duration[i], "days<br>",
                              "Resource: ", df$Resource[i])
  )
} 

p