CODEWITHSUNDEEP
rggplot2plotly
drmariod
drmariod

Reputation: 11762

Formatting mouse over labels in plotly when using ggplotly

I am struggling with text formatting when using ggplotly and the mouse over functionality.

library(plotly)
df <- data.frame(a=letters, b=LETTERS, x=runif(26), y=runif(26))
g <- ggplot(df, aes(x,y)) + geom_point(aes(text=sprintf('letter: %s\nLetter: %s', a, b)))
g
(gg <- ggplotly(g))

I would like to have some formatted text or at least a newline in my mouse over label. Is there a good documentation on how to design this mouse over bubble thing?

Upvotes: 48

Views: 51294

Answers (3)

MokeEire
MokeEire

Reputation: 698

Here's a solution using purrr's map function. It kinda surprised me that it worked but I like it.

I bolded the 'letter:' and 'Letter:' headings. This still prints the x-y coordinates, which you can remove with the argument tooltip in ggplotly(). 

df <- data.frame(a=letters, b=LETTERS, x=runif(26), y=runif(26))
g <- ggplot(df, aes(x,y)) + 
         geom_point(aes(text=map(paste('<b>letter:</b>', a, '<br>', '<b>Letter:</b>', b), HTML)))
g
(gg <- ggplotly(g))

Upvotes: 1

Jon Olav Vik
Jon Olav Vik

Reputation: 1461

See the tooltip argument to ggplotly(). For instance, to show only the species name (e.g. virginica for the top right point) on hover:

g <- ggplot(tail(iris), aes(Petal.Length, Sepal.Length, text=Species)) + geom_point()
ggplotly(g, tooltip="text")

Other examples:

ggplotly(g, tooltip="x")             # Petal.Length: 5.7
ggplotly(g, tooltip="Petal.Length")  # Petal.Length: 5.7
ggplotly(g, tooltip=c("x", "y"))

The last example will show the two-line tooltip

Petal.Length: 5.7
Sepal.Length: 6.7

Upvotes: 78

Jota
Jota

Reputation: 17611

plotly can make use of the line break HTML tag. You can get what your after using the <br> tag for a newline:

g <- ggplot(df, aes(x,y)) + 
       geom_point(aes(text=sprintf("letter: %s<br>Letter: %s", a, b)))

(gg <- ggplotly(g))

Upvotes: 33

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