R is open source software environment (and language) for statistical computing and graphics. Different surveys are showing R's popularity has increased substantially in recent years, especially in academic environment. Therefore, at the beginning main advantages and comparison to commercial...

A text file filter is a program that converts one text file into another on the basis of a set of rules. For statistical applications, a text file filter can convert data embedded in a complicated text file so that Stata can read and analyze it. A text file filter can also automate the...