Hovermode using Plotly with R

问题

Is there a way to code the hovermode when using plotly with R and ggplot2?

Currently, my code is:

plot <- ggplot(data, aes(var1, var2, text=var3)) + 
  geom_point()
py$ggplotly(plot)

And I want the plotly graph to automatically have the hover mode set to "show closest data on hover" rather than "compare data on hover".

回答1:

Add the following argument when calling ggplotly:

py$ggplotly(plot, kwargs=list(layout=list(hovermode="closest")))

回答2:

The answer from 'mkcor' didn't work when trying to do the same in Shiny. I kept getting an 'unused argument' error. For anyone else with the same problem, this worked for me...

Suppose this is my basic plot:

p <- ggplot(myDf, aes(x=x, y=y )) + geom_point(size = 3, shape = 0)

You can convert the ggplot object to a plotly object:

ggObj <- plotly(p)

Then you can change the hovermode like this:

layout(ggObj, hovermode = 'closest')

来源：https://stackoverflow.com/questions/28439959/hovermode-using-plotly-with-r