Highlight all values from a group on hover
Assume data library(ggplot2) library(plotly) set.seed(357) xy <- data.frame(letters = rep(c("a", "b", "c"), times = 3), values = runif(9), groups = rep(c("group1", "group2", "group3"), each = 3)) letters values groups 1 a 0.9913409 group1 2 b 0.6245529 group1 3 c 0.5245744 group1 4 a 0.4601817 group2 5 b 0.2254525 group2 6 c 0.5898001 group2 7 a 0.1716801 group3 8 b 0.3195294 group3 9 c 0.8953055 group3 ggplotly( ggplot(xy, aes(x = letters, y = values, group = groups)) + theme_bw() + geom_point() ) My goal is to, on hover, highlight all points that belong to the same group. E.g. on hover over