></td></tr>
<tr class="memitem:a99372014f79c259968b77c93eaddaf1a inherit pub_methods_classChart_1_1Base"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classChart_1_1Base.html#a99372014f79c259968b77c93eaddaf1a">clear_data</a> ()</td></tr>
<tr class="memdesc:a99372014f79c259968b77c93eaddaf1a inherit pub_methods_classChart_1_1Base"><td class="mdescLeft">&#160;</td><td class="mdescRight">Clear Graph API (by undefining 'dataref'.  <a