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<p>Overwrite _check_data of <a class="el" href="classChart_1_1Base.html" title="Base class for Chart; all other classes derived from here.">Chart::Base</a> and check the internal data to be displayed. </p>
<p>Make sure the data isn't really weird and collect some basic info about it<br/>
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<dl class="section return"><dt>Returns</dt><dd>status of check </dd></dl>

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