484 t = handles.zone{1}.t{1}.data;
0485 x = handles.zone{1}.x{1}.data;
0486 y = handles.zone{1}.y{1}.data;
0487 tmp = getfield(handles, <span class="string">'zone'</span>);
0488 
0489 <span class="keyword">if</span> (isfield(tmp{1},<span class="string">'r'</span>))
0490     r = handles.zone{1}.r{1}.data;
0491     theta = handles.zone{1}.theta{1}.data;
0492     vx = handles.zone{1}.vx{1}.data;
0493     vy = handles.zone{1}.vy{1}.data;
0494     v = handles.zone{1}.v{1}.data;
0495     vtheta =handles.zone{1}.v