PACKT marketing guys again contact me to review their new book Mastering Scientific Computing with R.  The book 432 pages (including covers) book is consist of 10 chapters which starts from basic R and ends with advanced data management. However, ...

Recently, Packt Publishing publish the book R Object-oriented Programming. The eleven chapter book covers from basic data types in R to a more advanced method such as simulation and writing functions.  Different data types (i.e. integer, character...

One of our graduate student ask me on how he can check for correlated variables on his dataset. Using R, his problem can be done is three (3) ways. First, he can use the cor function of the stat package to calculate correlation coefficient between vari...

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 hav...