o a point of interest such as a grounding line.</p><p><tt>d = pathdistps(...,'ref',[refx refy])</tt> references the output as above, but using polar stereogprahic (ps71) coordinates.</p><p><tt>d = pathdistps(...,'FixDistortion',false)</tt> calculates distances in pure polar stereographic coordinates without accounting for distortion induced by the projection. In Nov 2018, the default behavior changed from <tt>'FixDistortion',false</tt> to <tt>'FixDistortion',true</tt> meaning distances now reflect true dist