data required for rendering the column sparkline,
         i.e.</div></td><td class="summaryTableOwnerCol"><a href="../../../com/scottlogic/sparkline/sparklineClasses/ColumnSparklineBase.html">ColumnSparklineBase</a></td></tr></table></div><a name="methodSummary"></a><div class="summarySection"><div class="summaryTableTitle">Public Methods </div><table cellspacing="0" cellpadding="3" class="summaryTable " id="summaryTableMethod"><tr><th>&nbsp;</th><th colspan="2">Method</th><th class="summaryTableOwnerCol">