Evaluating your code performance using the profvis package

The profvis package is a powerful tool for line profiling in R.

This package is provided by the RStudio team, and its most appreciated feature is the interactive report that is automatically produced, representing a really effective way of visualizing and investigating time resources requested by each part of your code.

Getting ready

Since the lineprof package is not hosted on CRAN, but on GitHub, we first need it to install the devtools package in order to leverage the install_github function provided by this package.

Moreover, we will use the ggmap package to build the example to be profiled:

install.packages(c("devtools","ggmap"))
library(devtools)
install_github("rstudio/profvis")
library(profvis)
library(ggmap)

How to do it...

1. Define a profvis object containing the code to be profiled. Run the following piece of code, initializing the report object.

2. The following code is used from the drawing a route on a map with ggmap recipe in Chapter...