How to add line breaks to plotly hover labels

Question

Is there a way to get plotly to display the hover text on multiple lines/get it to recognize special characters line '\n' in the text?

A dummy version of what I'm looking to do is:

data <- data.frame(cbind(rnorm(10, 8), rnorm(10, 2))) names(data)<-c("thing1", "thing2")  data$hovertext <- paste("here's a coordinate: ",                          round(data$thing1,1), sep = "\n")   p <- plot_ly(data, type = 'scatter', x = thing1, y = thing2,               text = hovertext, hoverinfo = 'text', mode = "markers") 

Which of course just ignores the separator and prints all on one line. Can I trick plotly/R into recognizing that line break?

Answer 1

Just use the HTML tag <br>:

library(plotly) data <- data.frame(cbind(rnorm(10, 8), rnorm(10, 2))) names(data) <- c("thing1", "thing2")  data$hovertext <- paste("here's a coordinate:",                      round(data$thing1,1), sep = "<br>")   p <- plot_ly(data, type = 'scatter', x = ~thing1, y = ~thing2,           text = ~hovertext, hoverinfo = 'text', mode = "markers") 

Additionally, you could use HTML tags to change the font styles as well (and much more)...