Update functions to subsampling internally

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phrapl@177 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Update functions to subsampling internally

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phrapl@178 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Update functions to subsampling internally

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/phrapl@179 edb9625f-4e0d-4859-8d74-9fd3b1da38cb