Format hover data labels Plotly R

Question

I am trying to format the data labels that appear when I hover over part of a chart I have created using Plotly. The label is currently showing like this. I would like for the label to only show profit.

My code for creating the plot is:

output$monthlyProfits <- renderPlotly({
ggplot(profitTemp, aes(x = Date, y = Profit)) + geom_line(aes(text=Profit), 
colour = "Blue") 

How do I format the data label so that it will not show the X axis and only show the Y axis (profit)? I have tried with aes(text=Profit) but the X axis still shows.

Any help would be greatly appreciated.

Answer 1

It is more flexible to customize the plots that are directly made in plotly, however the requested operation is also possible using ggplotly. Here is an example on the iris data set:

library(plotly)
library(ggplot)

To define the hover info:

plot_ly(data = iris,
        x = ~Sepal.Length,
        y = ~Petal.Length,
        color = ~Species,
        hoverinfo = 'text',
        text = ~Species)

to do so with ggplotly leave the text argument blank when calling ggplot:

z <- ggplot(iris, aes(x = Sepal.Length, y = Petal.Length, color = Species))+
  geom_point() 

and set the argument tooltip to ggplotly:

ggplotly(z, tooltip="Species")

compared to:

z <- ggplot(iris, aes(x = Sepal.Length, y = Petal.Length, color = Species))+
  geom_point(aes(text = Species)) 

ggplotly(z)

EDIT: custom text:

plot_ly(data = iris,
        x = ~Sepal.Length,
        y = ~Petal.Length,
        color = ~Species,
        hoverinfo = 'text',
        text = ~paste(Species,
                      '</br></br>', Petal.Length))