Are you generating the spectrum with line of sight velocities turned on? If so try it without and see if the same error occurs. I suspect the particle trajectories are used for this, but I do not know for sure. <div><br></div>
<div><br></div><div><br></div><div>Andrew E<br><br>On Monday, January 27, 2014, Devin Silvia &lt;<a href="mailto:devin.silvia@gmail.com">devin.silvia@gmail.com</a>&gt; wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all,<br>
<br>
I recently used conda to install yt, but when I try to import<br>
AbsorptionSpectrum, I get this error:<br>
<br>
<a href="http://paste.yt-project.org/show/4246/" target="_blank">http://paste.yt-project.org/show/4246/</a><br>
<br>
I&#39;m not familiar with particle_trajectories, but is this something<br>
that is actually needed by AbsorptionSpectrum?  If not, should it even<br>
being trying to import that?  Any thoughts/help are, as always,<br>
appreciated.<br>
<br>
Cheers,<br>
Devin<br>
<br>
--<br>
Devin W. Silvia<br>
Research Associate<br>
Department of Physics and Astronomy<br>
Michigan State University<br>
<a href="http://www.devinsilvia.com" target="_blank">www.devinsilvia.com</a><br>
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</blockquote></div><br><br>-- <br><div dir="ltr"><div style="font-family:arial;font-size:small">Graduate Student </div><div style="font-family:arial;font-size:small">Columbia University</div><div style="font-family:arial;font-size:small">
Department of Astronomy</div></div><br>