profvis is a tool for visualizing code profiling data from R. It creates a web page which provides a graphical interface for exploring the data.

install.packages("profvis")

To run code with profiling, wrap the expression in profvis(). By default, this will result in the interactive profile visualizer opening in a web browser.

library(profvis)

f <- function() {
  pause(0.1)
  g()
  h()
}
g <- function() {
  pause(0.1)
  h()
}
h <- function() {
  pause(0.1)
}

profvis(f())

The profvis() call returns an htmlwidget, which by default when printed opens a web browser. If you wish to save the object, it won't open the browser at first, but you can view it later by typing the variable name at the console, or calling print() on it.

p <- profvis(f())

# View it with:
p
# or print(p)