e.html#a8bae7e38a6e77c0696f2ef8b06791caa">_grey_background</a> ()</td></tr>
<tr class="memdesc:a8bae7e38a6e77c0696f2ef8b06791caa inherit pub_methods_classChart_1_1Base"><td class="mdescLeft">&#160;</td><td class="mdescRight">put a grey background on the plot of the data itself  <a href="#a8bae7e38a6e77c0696f2ef8b06791caa"></a><br/></td></tr>
<tr class="memitem:a379e60b338fb8858ce705bdc0e5630fb inherit pub_methods_classChart_1_1Base"><td class="memItemLeft" align="right" valign="top">private int&#160;</td><t