wavelet.plot(): Adjusted handling of situation where rasterPlot() fails

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@869 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
A tiny change to the default wavelet.levels (floating point accuracy)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@870 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Alternative color palette in example of wavelet.plot()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@871 edb9625f-4e0d-4859-8d74-9fd3b1da38cb