crazyguitar/johansencointegration

A C++ implementation of the Johansen Cointegration test

JohansenCointegration

A C++ implementation of the Johansen Cointegration test

This is the first C/C++ implementation of Johansen's Cointegration test I'm aware of on the public Internet. It's based on a C# implementation from a poster named Vanna from quantcode.com.

This isn't the best code I've written but in my defense the algorithm is very involved and the original C# code was written by someone else. However it does in fact work and even has all the memory leaks worked out.

Prerequisites:

This class is based on the GNU Scientific Library (GSL) version 1.16. If you're on a *nix system this shouldn't be a problem. Just download and install it the usual way for your system. Google is your friend.

For Windows systems this is stickier. GSL does not officially provide library binaries for Windows; you'll either have to find a Windows binary package somewhere on the Interwebs or compile it yourself (not for the faint of heart). A fellow github member (ahmadyan) provided all the tools and detailed instructions necessary to do this. In fact I successfully created my own Windows GSL binaries using his instructions.

Build instructions for the Johansen Cointegration project:

On Linux, create a build subdirectory and go into it. Type "cmake .." followed by make.

On Windows, I uploaded the .sln and .vcxproj files for a Visual Studio 2013 project. Eventually I'll fix the CMakeLists.txt file to generate VS project files directly. The Visual Studio project is expecting your Windows-based GSL library to be in the top level directory of this project, parallel with the source files.

The main class for doing all the Johansen work is in JohansenHelper.h/.cpp. A command line program is contained in JohansenTest.cpp which uses the JohansenHelper. To demonstrate the cointegration function there are 4 test cases implemented in JohansenTest. These cases were covered in Vanna's quantcode postings on quantcode. S/he wrote many C# apps and online papers/FAQs which I encourage you to have a look at.

In particular, I referred to this article frequently: How do I interpret Johansens' test results? This is the article from where I got the 4 test cases.

Drop a line if you find this useful or have problems compiling or using this.