<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Maybe :<br>
<br>
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<a href="http://dirk.eddelbuettel.com/code/littler.html">http://dirk.eddelbuettel.com/code/littler.html</a><br>
<br>
<br>
On 10/09/13 13:03, statquant3 wrote:<br>
</div>
<blockquote cite="mid:1378814637664-4675755.post@n4.nabble.com"
type="cite">
<pre wrap="">I would like to try to use data.table awesomeness on the command line.
The usual use case is that you have a file and you would like to quickly
create a summarized other file.
Sometimes you wouldn't need to start R
Something like (I'm just guessing)
$) DTCMD myfile.csv "[1:5, list(a,b,c=sum(d),e=cumsum(f)),
by=grp][,test:='hello']" > newFile.csv
Would someone have an idea about this ?
--
View this message in context: <a class="moz-txt-link-freetext" href="http://r.789695.n4.nabble.com/data-table-on-the-command-line-tp4675755.html">http://r.789695.n4.nabble.com/data-table-on-the-command-line-tp4675755.html</a>
Sent from the datatable-help mailing list archive at Nabble.com.
_______________________________________________
datatable-help mailing list
<a class="moz-txt-link-abbreviated" href="mailto:datatable-help@lists.r-forge.r-project.org">datatable-help@lists.r-forge.r-project.org</a>
<a class="moz-txt-link-freetext" href="https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help">https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help</a>
</pre>
</blockquote>
<br>
</body>
</html>