string">'\n'</span>)
0128         
0129     <span class="keyword">elseif</span> length(val) ~= 1
0130         
0131         warning(<span class="string">'%s must be a single number; field will be ignored.'</span>,cellField)
0132         fprintf(<span class="string">'\n'</span>)
0133         
0134     <span class="keyword">elseif</span> val &lt; 1 <span class="comment">%|| round(val) ~= val</span>
0135         
0136         warning(<span class="string">'%s must be a positive val.'</span>,cellField)
0137     