According to wiki.GIS.com one of the reason for using inset map is to provide a reference for an area for unfamiliar readers. Inset map is also considered a great asset for cartographers. Most of the GIS software available in the market have a provision for non-cartographer and beginners. However, for R users who are into making maps, creating inset map is a bit challenging. Thanks to the post of Pascal Mickelson and Scott Chamberlain which gave users like me a guide on how to create inset map in R using ggplot2. Below is an example of map with inset created using R.