Changes EWMA, corr pending

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/uwgarp@64 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Plot done

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/uwgarp@65 edb9625f-4e0d-4859-8d74-9fd3b1da38cb