CED2AR STATA Reader

Artifacts

Maven Central

This project contains java classes that will allow you to read several versions of STATA data sets. The following versions of STATA datasets are supported by the data readers in the package.

Format        Current as of
---------------------------------------
  118         Stata 14 http://www.stata.com/help.cgi?dta
  117         Stata 13 http://www.stata.com/help.cgi?dta
  116         internal; never released
  115         Stata 12  http://www.stata.com/help.cgi?dta_115
  114         Stata 10 & 11  http://www.stata.com/help.cgi?dta_114
  113         Stata  8 & 9  http://www.stata.com/help.cgi?dta_113
--------------------------------------

Build

1. Clone the github repository to your machine.
2. Go to the root directory of the cloned repository.
3. Use maven 2 to build the project. On the command line, enter the following command

mvn clean install -Dgpg.skip
If publishing, omit the -Dgpg.skip.

Usage

StataReaderFactory factory = new StataReaderFactory();
StataReader SR = factory.getStataReader("C:\\java\\info\\Data\\STATA\\auto13WithLabel80.dta");
List<String> observation = SR.getObservation(8);
You can call any methods defined in the interface.
Java doc for the classes is at /info/index.html 

The ced2arddigenerator project uses this code.

Code Structure

1. All STATA readers are implementations of StataReader interface.
2. DtaReader is the super class of all readers. Basic operations such as methods to convert stream of bytes to various kinds of decimal values are coded here. This class also contains methods that are common to all readers; some methods are overridden in the readers.
3. Dta113Reader, Dta114Reader and Dta115Readers form a class hierarchy that adds code to reflect the changes in the 113, 114 and 115.
4. Beginning Format 117 stata data files format has changed significantly. Hence, Dta117Reader and Dta118Reader form different hierarchy to that adds code to to reflect the changes in the 117 and 118.

Limitations

** STATA Version 13 and version 14 the large string formats are ignored by the readers
** STATA version 14 is not tested yet.
** These readers are tested for byte both byte formats LitleEndian and BigEndian.
** Code is tested on 64 bit machine.  (Will need to test against 32???) 
** Code is not tested against multilingual data sets.