Before starting the tutorial, SCIRun's sample dataset directory must be present. SCIRun's sample dataset can be downloaded from SCIRun's software web site. The environment variable SCIRUN_DATA must be set to point to SCIRun's sample dataset directory. This tutorial assumes the SCIRun sample data directory is /usr/local/SCIRunData/1.24.2. For a csh-like shell:

  setenv SCIRUN_DATA /usr/local/SCIRunData/1.24.2	    
      

For an sh-like shell:

  export SCIRUN_DATA=/usr/local/SCIRunData/1.24.2