R is an amazing platform for data analysis, capable of producing almost any type of graph, and can import data from almost any source, including text files, Excel spreadsheets, statistical packages, and database management systems.
Statisticians and data miners looking to understand large amounts of data often choose R for data analysis projects because of its efficiency.
Here is some R library for data analysis:
So, Basically, Data visualization is one of the primary steps in the process of data analysis and R makes the activity practically effortless. In another word you can say that R and Data analysis make a perfect combination when it comes to visualizing large amounts of data in a short amount of time