How to configure Weka

From BioWeka

Introduction

This articles describes how to set up BioWeka with an existing installation of Weka. This can be necessary if e.g. other Weka extensions are already installed into the Weka environment.

Background

To locate the extension classes, Weka uses a file called GenericPropertiesCreator.props. The format of this file is described here.

Configuration

The BioWeka distribution (bioweka-X.Y.Z.zip) already contains a preconfigured GenericPropertiesCreator.props file. Copy this file into your home directory (~/) if you are using Linux or in the installation directory of Weka (e.g. C:\Program Files\Weka-3-4) if you are using Windows. If you have already altered an existing version of this file, you have to manually merge the two files.

Finally, it is necessary to add the JAR files located in the lib subdirectory to Java's CLASSPATH environment variable, so Weka is able to find the BioWeka extension classes.

For Linux

Add this line e.g. to the .bashrc file located in the home (~/) directory.

export CLASSPATH=~/bioweka/lib/bioweka-X.Y.Z.jar:...:~/weka/weka.jar:$CLASSPATH

For Windows

Replace the content of the RunWeka.bat file located under the C:\Program Files\Weka-3-4-4\ directory with the following lines:

SET CLASSPATH=C:\bioweka-X.Y.Z\lib\bioweka-X.Y.Z.jar;...;C:\Program Files\Weka-3-4-4\weka.jar;%CLASSPATH%
java weka.gui.GUIChooser

See also

• Could not read a configuration file for the generic object editor