 coloured using a discrete colouring set if the
 user has selected a nominal attribute for colouring. If the user
 has selected a numeric attribute then the datapoints are coloured
 using a colour spectrum ranging from blue to red (low values to
 high). Datapoints missing a class value are displayed in black.</div>
<dl><dt><span class="strong">Version:</span></dt>
  <dd>$Revision: 7899 $</dd>
<dt><span class="strong">Author:</span></dt>
  <dd>Ashraf M. Kibriya (amk14@cs.waikato.ac.nz)</dd>
<dt><span class="