Shiny - googlevis：gvisPieChart的工具提示

问题描述

我正在尝试为Googlevis饼图创建自定义工具提示。

I am trying to create custom tooltips for a googlevis pie chart.

我发现，但我无法将类似的概念复制到饼图。请参阅下面的我试图达到此目的的一个：

I have found Using Roles via googleVis but I cannot replicate a similar concept to a pie chart. See below for one of my attempts to achive this:

df <- data.frame(year=c("a","b","g"),pop=1:3, pop.html.tooltip=c("alpha","beta","gamma"))

  plot(
    gvisPieChart(df,options=list(tooltip="{isHtml:'true'}"))
  )

此外，我发现无法正常工作。尽管确定性概念工作正常，但工具提示并未按dat dataframe的Sales.html.tooltip列中的定义显示。

Moreover, I found out that the first column chart example in Using Roles via googleVis is not working properly. Although the certainty concept is working fine, the tooltips are not displayed as defined in Sales.html.tooltip column of dat dataframe.

显然，除了gvisScatterChart，其他图表中的工具提示都有问题。

Apparently, I am having a problem with tooltips in every other chart apart from gvisScatterChart.

推荐答案

目前通过google可视化API不可能实现这一目标。

This is currently not possible via the google visualisation api

例如，柱形图的工作方式为：

The way it would work with for example the column chart is:

g <- gvisColumnChart(df, xvar = "year", yvar = c("pop", "pop.html.tooltip")
                     , options=list(tooltip="{isHtml:'true'}"))
plot(g)

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