Hello, I'm trying to plot a histogram (or alternatively the density) of a variable, with a slider that displays a vertical line with the corresponding quantile of the distribution of the variable. That is, I what to interactivity pick for example, the median, and have the vertical line move to the corresponding value. Is this possible to implement in ggvis? I read this comment from Hadley that says vertical lines are not implemented in ggvis (at least as of last year). https://groups.google.com/forum/#!topic/ggvis/VpUYCvhbfX8 Any guidance would be greatly appreciated. Best, Lars. [[alternative HTML version deleted]]