l_ng_plots.scagnostics: 2d Navigation Graph Setup with dynamic node fitering based on
scagnostic measures and by using a scatterplot matrix
Description
This method is useful when working with objects from the
scagnostics function from the scagnostics R
package. In order to dynamically re-calcultate the scagnostic measures for
a subset of the data use the scagnostics2d measures creature
function.