How To Library

Installation

The first step is to ensure all of the required software is available (see the main page for more details).  If you are lucky your system administrator will take care of installing SAS and the Fortran compilers for you.  Once that task is done, you can proceed to compiling the CG2 source code.  

Don't forget to download the SAS programs and unzip them to a project directory.  The zip file creates three directories: runcg, runcg_out, and cgpost.  The section below provides more details on using the software.

Using CG2

Now that CG2 is set up, you can finally begin analyzing some data!  However, before actually estimating model parameters, you must properly structure the input file and calculate the size of the problem.  With the input data ready, the next step is to run CG2 and calculate parameter estimates.  The final step is post-processing the estimates, although this may not be required depending on the set of parameters you are interested in.

The SAS programs as packaged are setup to use a purely fictional, synthetic dataset.  It is a good idea to run through each HowTo on the synthetic data first before attempting a problem of your own.  This will give you an opportunity to become familiar with each stage of the process as well as test your installation.

Typographical convention: We have tried to be consistent throughout in the use of typographical convention:

    italics designate a file or directory
    type-writer characters are used to designate
Now to get started:

Pre-process input data
Run CG2
Post-process the CG2 output

If you haven't already downloaded the software, you can find it here.

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