examples/geom_hline_interactive.R

In davidgohel/ggiraph: Make 'ggplot2' Graphics Interactive

library(ggplot2)
library(ggiraph)

if( requireNamespace("dplyr", quietly = TRUE)){
  g1 <- ggplot(economics, aes(x = date, y = unemploy)) +
    geom_point() + geom_line()

  gg_hline1 <- g1 + geom_hline_interactive(
    aes(yintercept = mean(unemploy),
        tooltip = round(mean(unemploy), 2)), size = 3)
  x <- girafe(ggobj = gg_hline1)
  if( interactive() ) print(x)
}

dataset <- data.frame(
  x = c(1, 2, 5, 6, 8),
  y = c(3, 6, 2, 8, 7),
  vx = c(1, 1.5, 0.8, 0.5, 1.3),
  vy = c(0.2, 1.3, 1.7, 0.8, 1.4),
  year = c(2014, 2015, 2016, 2017, 2018)
)

dataset$clickjs <- rep(paste0("alert(\"", mean(dataset$y), "\")"), 5)


g2 <- ggplot(dataset, aes(x = year, y = y)) +
  geom_point() + geom_line()

gg_hline2 <- g2 + geom_hline_interactive(
  aes(yintercept = mean(y),
      tooltip = round(mean(y), 2),
      data_id = y, onclick = clickjs))

x <- girafe(ggobj = gg_hline2)
if( interactive() ) print(x)