add_tooltip {ggvis} | R Documentation |
Add tooltips to a plot.
add_tooltip(vis, html, on = c("hover", "click"))
vis |
Visualisation to add tooltips to. |
html |
A function that takes a single argument as input. This argument
will be a list containing the data in the mark currently under the
mouse. It should return a string containing HTML or |
on |
Should tooltips appear on hover, or on click? |
## Run these examples only in interactive R sessions if (interactive()) { all_values <- function(x) { if(is.null(x)) return(NULL) paste0(names(x), ": ", format(x), collapse = "<br />") } base <- mtcars %>% ggvis(x = ~wt, y = ~mpg) %>% layer_points() base %>% add_tooltip(all_values, "hover") base %>% add_tooltip(all_values, "click") # The data sent from client to the server contains only the data columns that # are used in the plot. If you want to get other columns of data, you should # to use a key to line up the item from the plot with a row in the data. mtc <- mtcars mtc$id <- 1:nrow(mtc) # Add an id column to use ask the key all_values <- function(x) { if(is.null(x)) return(NULL) row <- mtc[mtc$id == x$id, ] paste0(names(row), ": ", format(row), collapse = "<br />") } mtc %>% ggvis(x = ~wt, y = ~mpg, key := ~id) %>% layer_points() %>% add_tooltip(all_values, "hover") }