Download CatReg

Download CatReg 3.1.0.7 (rel. 2017-06-16)

For Microsoft Windows 7 or later

On this page:

Downloading and Installing the Software
System Requirements
Downloading the User Guide and Readme
Uninstalling Older CatReg Versions (Optional)
Previous R-only release (CatReg 2.3)

Downloading and Installing the Software

CatReg can be installed to any folder where the user has create/read/write privileges. Administrator privileges are not required.

You do not need to uninstall previous versions of CatReg. You can run this version of CatReg alongside earlier versions.

Right-click and select “Save Target As” or “Save Link As” for the CatReg 3.1 Windows Installer file (.msi) (msi) (4.03 MB) . It is highly recommended that all CatReg users download and install this new version.
Run the CatReg31.msi file. Your system’s antivirus program may warn you about the file; if so, approve or allow the file so the install can continue.
Step through the install wizard. You can enter a different install directory or accept the default.
Navigate to the install directory and select the CatReg.exe file to start the program.

When installing the CatReg application folder, you should:

Place the CatReg application folder (and its subfolders) in the simplest, shortest directory possible. For most EPA users, the preferred path would be C:\Users\[EPA user's LAN ID]; for non-EPA users, this could be as simple as C:\.
Ensure there are no special characters or spaces in the folder names.

Refer to the ReadMe.pdf in the CatReg application folder for details on known issues or other information that did not make it into the user guide.

If you have problems or concerns, please contact CatReg Support.

System Requirements

16 Megabytes of RAM
Microsoft Windows 7 or later.
Microsoft .NET 4.5 or later. If your computer is set up to allow or be notified of downloads of Microsoft software, then it is likely that that version of the .NET framework is already installed. Otherwise, you can download and install Microsoft's latest version of .NET for client desktops.
R for Windows version 3.4 to 3.4.4 (either 32- or 64-bit). Later versions of R contain changes that limits some CatReg functionality (such as plotting and hypothesis testing). CatReg relies on the open source package R for Windows to perform all statistical calculations.

Note: There are no plans at this time to create Macintosh or Linux versions of CatReg.

Downloading the User Guide and Readme

The CatReg User Guide contains procedures on using the application, along with deeper and more technical reference information on CatReg concepts.

The CatReg ReadMe file summarizes what's new and changed in the latest release, along with any last-minute changes not in the User Guide.

These PDF documents are included in the CatReg application folder or can be downloaded here:

CatReg (Categorical Regression) 3.1 User Guide (pdf) (2.74 MB, 2017-06-16, EPA/600/R-17/236)
Concepts and procedures for using and understanding CatReg
CatReg 3.1 ReadMe (pdf) (98.91 KB, 2017-06-16)
Readme file describing updates/changes to CatReg

Uninstalling Older CatReg Versions (Optional)

You do not need to uninstall previous versions of CatReg.

However, if you want to uninstall previous versions of CatReg, it is recommended that you retain the directory structure for the folders holding your previous model runs' input and output data files. Keeping those files and folders in place will maintain the functionality of your previous CatReg sessions.

Previous R-Only Release (CatReg 2.3)

The previous R-only version of the software is still available for download. None of the statistics in 2.3 have changed in the Windows version of CatReg, except that the Windows version provides automatic hypothesis testing.