Hi Devin,

The problem is that doing "from yt.analysis_modules.api import ..." will try to import everything that api first and the particle_trajectories (which is an unrelated module) is simply failing.  You might file a bug for the import error.  Beside that, you can import the AbsorptionSpectrum in the following way to circumvent this issue:
from yt.analysis_modules.absorption_spectrum.api import AbsorptionSpectrum

Britton


On Mon, Jan 27, 2014 at 3:22 PM, Devin Silvia <devin.silvia@gmail.com> wrote:
Hi Andrew,

The code is failing on the import call for AbsorptionSpectrum.  So I'm
not at the point yet of trying to run the code.  I was under the
impression that the line-of-sight velocities would come from the gas
velocity anyway, of course I could be wrong there.

-Devin

On Mon, Jan 27, 2014 at 9:38 AM, Andrew James Emerick
<aje2123@columbia.edu> wrote:
> 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.
>
>
>
> Andrew E
>
>
> On Monday, January 27, 2014, Devin Silvia <devin.silvia@gmail.com> wrote:
>>
>> Hi all,
>>
>> I recently used conda to install yt, but when I try to import
>> AbsorptionSpectrum, I get this error:
>>
>> http://paste.yt-project.org/show/4246/
>>
>> I'm not familiar with particle_trajectories, but is this something
>> that is actually needed by AbsorptionSpectrum?  If not, should it even
>> being trying to import that?  Any thoughts/help are, as always,
>> appreciated.
>>
>> Cheers,
>> Devin
>>
>> --
>> Devin W. Silvia
>> Research Associate
>> Department of Physics and Astronomy
>> Michigan State University
>> www.devinsilvia.com
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>
>
>
> --
> Graduate Student
> Columbia University
> Department of Astronomy
>
>
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--
Devin W. Silvia
Research Associate
Department of Physics and Astronomy
Michigan State University
www.devinsilvia.com
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