umel(str2num(bins)) == 2 | numel(str2num(bins))== 0
0151         [var1 var2] = <a href="#_sub21" class="code" title="subfunction varargout = get_var_names(handles)">get_var_names</a>(handles);
0152         u1 = strfind(var1,<span class="string">'_'</span>);
0153         u2 = strfind(var2,<span class="string">'_'</span>);
0154         cur_zone1 = var1(u1(1)+1:u1(2)-1);
0155         cur_zone1 = strmatch(cur_zone1, handles.zone_names,<span class="string">'exact'</span>);
0156         cur_zone2 = var2(u2(1)+1:u