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<p><h2>1 new question in <a href="http://stackexchange.com/filters/7853/data-table">data.table filter</a> on stackexchange.com</h2><hr/></p>
<p><div style="padding: 0 15px;"><h3><a href="http://stackoverflow.com/questions/7367965/tabulations-and-insertions-with-data-table">Tabulations and insertions with data.table</a></h3>
I am trying to take a very large set of records with multiple indices, calculate an aggregate statistic on groups determined by a subset of the indices, and then insert that into every row in the ...
</div><table cellspacing="0" border="0" cellpadding="0" width="100%" style="font-size: 90%; color: #7A7A7A; padding: 15px 15px 0 15px"><tr><td align="left">Tagged: r data.table </td><td align="right"> by <a href="http://stackoverflow.com/users/805808/iterator">Iterator</a> on <a href="http://stackoverflow.com">stackoverflow.com</a></td></tr></table></p>
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