181 
0182 <span class="keyword">if</span> exist(<span class="string">'P'</span>)
0183 handles.P{handles.called} = P;
0184 <span class="keyword">else</span>
0185     handles.P{handles.called} = [];
0186 <span class="keyword">end</span>
0187 
0188 guidata(gcbo,handles);
0189 
0190 
0191 <span class="comment">% --- Executes on button press in segment_speed.</span>
0192 <a name="_sub8" href="#_subfunctions" class="code">function segment_speed_Callback(hObject, eventdata, handles)</a>
0193 <span class="comment">