Updates to scripts for generating figures.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/jointseg@71 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
some clean up


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/jointseg@72 edb9625f-4e0d-4859-8d74-9fd3b1da38cb