There is a range of visual tools used in Meteorological applications, which include GrADS, NCL, CDO, IDL, etc. R language is developed by a statistician with the capability of handling large data sets. There are many packages and subroutines developed by third parties for meteorological applications.Some of them can provide powerful support for analyzing and visualizing large meteorological data sets.The NCEP data analysis tool based on R language, which can be used for statistical analysis and visualization based the meteorological data sets, shows the effort towards using R language into meteorological applications. It is possible to extend the functions of this package by applying some Bayesian analysis and parallel computing technique.