Hi Sam,<div><br></div><div>Thanks for the info! I&#39;ll give it a try and report back if I get something working. </div><div><br></div><div>-Andrew<br><br><div class="gmail_quote">On Tue, Feb 5, 2013 at 12:12 PM, Sam Skillman <span dir="ltr">&lt;<a href="mailto:samskillman@gmail.com" target="_blank">samskillman@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Oh man, that Sam Skillman from a couple of years ago really dropped the ball.  I did not end up giving it a go or report back!<div>
<br></div><div>That said, I think Matt&#39;s suggestion still holds up.  </div>

<div><br></div><div>One other option would be to use (or modify) the write_to_gdf functionality, though this would duplicate the data.  </div><div><br></div><div>So to reuse some bits...</div><div>

<div>If you give this a shot and test it, let us know how it goes, and feel free to pull request if it works out.</div></div><div><br></div><div>Sam</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div class="h5">On Tue, Feb 5, 2013 at 12:50 PM, Andrew Myers <span dir="ltr">&lt;<a href="mailto:atmyers@berkeley.edu" target="_blank">atmyers@berkeley.edu</a>&gt;</span> wrote:<br>


</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">Hello YT users,<div><br></div><div>A couple of years ago, Sam Skillman (email chain attached) asked about support for saving derived fields to the disk, so we don&#39;t have to re-compute expensive fields over and over again. Did this functionality ever make it into yt? I&#39;m working on something where this would be very useful, so if not I might have a go at implementing myself.</div>



<div><br></div><div>Thanks,</div><div>Andrew Myers<br><br><div class="gmail_quote"><div><div>---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Sam Skillman</b> <span dir="ltr">&lt;<a href="mailto:samskillman@gmail.com" target="_blank">samskillman@gmail.com</a>&gt;</span><br>



Date: Tue, Jan 11, 2011 at 9:40 AM<br>Subject: [Yt-dev] saving derived fields<br>To: <a href="mailto:yt-dev@lists.spacepope.org" target="_blank">yt-dev@lists.spacepope.org</a><br><br><br>Hi all,<div><br></div><div>I&#39;ve started dealing with a lot of time-consuming derived fields and am wondering if there is already support for writing derived fields back to the raw data files (e.g. .cpu files).  If not, any thoughts on doing so?   <span><font color="#888888"><br clear="all">





<br>Sam
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