[yt-users] OffAxisProjection axes problems

[Nathan Goldbaum]

On Fri, Jun 3, 2016 at 4:08 PM, Stephanie Tonnesen <stonnes at gmail.com>
wrote:

> Hi Nathan,
>
>
> So I tried two of your ideas, and don't get the last one.
>
> ds.coordinates.x_axis[1] = 0
>>     ds.coordinates.x_axis['y'] = 0
>>     ds.coordinates.y_axis[1] = 2
>>     ds.coordinates.y_axis['y'] = 2
>>
>
> Is the orientation correct (albeit with z along the horizontal axis and x
> along the vertical axis) if you don't do this ^ ?
>
> If I don't do that but still have the same L and north_vector, I get the
> same results.
>
> If I change L = [0,1,0] and north_vector=[0,0,1], I get the same results
> as well.
>
> Ugh!
>
> I am not sure what "x" and "z" fields you think I should be making
> OffAxisProjection s for?  Do you mean have L = [1,0,0] and [0,0,1], or have
> it project an "x" and "z" field onto my off-axis projection?
>

'x' and 'z' don't really have a meaning for OffAxisProjectionPlot, that's
why they're dispalyed as "image x" and "image y". However, if you specify a
north_vector, that should disambiguate things.

It's entirely possible there's a bug here.


>
> Thanks,
>
> Stephanie
>
>
>
>
> --
> Dr. Stephanie Tonnesen
> Alvin E. Nashman Postdoctoral Fellow
> Carnegie Observatories, Pasadena, CA
> stonnes at gmail.com
>
> On Thu, Jun 2, 2016 at 5:14 PM, Nathan Goldbaum <nathan12343 at gmail.com>
> wrote:
>
>>
>>
>> On Thu, Jun 2, 2016 at 6:45 PM, Stephanie Tonnesen <stonnes at gmail.com>
>> wrote:
>>
>>> Hi all,
>>>
>>> The quick summary of what I want to do is switch the coordinates of the
>>> x-axis on a OffAxisProjection plot.  Basically, what I am trying to do is
>>> get a LOS look at a galaxy , so I need a 20 degree tilt in the y-z plane.
>>> For some reason this is swapping the x-axis direction from my plain old y
>>> slice.  The relevant parts of my code look like this:
>>>
>>> ds.coordinates.x_axis[1] = 0
>>>     ds.coordinates.x_axis['y'] = 0
>>>     ds.coordinates.y_axis[1] = 2
>>>     ds.coordinates.y_axis['y'] = 2
>>>
>>
>> Is the orientation correct (albeit with z along the horizontal axis and x
>> along the vertical axis) if you don't do this ^ ?
>>
>> What happens if you make an off-axis projection aligned with the y axis,
>> i.e. L = [0, 1, 0], north_vector = [0, 0, 1]?
>>
>> Can you try making an off-axis projection of the 'x' and 'z' fields?
>>
>>
>>>
>>>     plot6=yt.SlicePlot(ds,"y","density")
>>>     plot6.save()
>>>
>>>     plot8=yt.SlicePlot(ds,"y","velocity_z")
>>>     plot8.save()
>>>
>>>     plot9 = yt.SlicePlot(ds,"y","velocity_y")
>>>     plot9.save()
>>>
>>>     plot10 = yt.SlicePlot(ds,"y","velocity_x")
>>>     plot10.save()
>>>
>>>     ds.periodicity=(True,True,True)
>>>
>>>     L = [0.0,0.93969,-0.342]
>>>     #W = [0.5,0.5,0.5]
>>>     #c = [0.5,0.5,0.5]
>>>     #N = 1028
>>>     north_vector = [0,0.342,0.93969]
>>>     plot12 =
>>> yt.OffAxisProjectionPlot(ds,L,'density',width=(100,'kpc'),north_vector=north_vector)
>>>     plot12.save()
>>>
>>>     plot13 =
>>> yt.OffAxisProjectionPlot(ds,L,'velocity_x',width=(100,'kpc'),north_vector=north_vector)
>>>     plot13.save()
>>>     plot14 =
>>> yt.OffAxisProjectionPlot(ds,L,'velocity_y',width=(100,'kpc'),north_vector=north_vector)
>>>     plot14.save()
>>>     plot15 =
>>> yt.OffAxisProjectionPlot(ds,L,'velocity_z',width=(100,'kpc'),north_vector=north_vector)
>>>     plot15.save()
>>>
>>> I have attached four files:  the slices of velocity_y and velocity_x and
>>> the OffAxisProjections of the same.  You can see that the x-axis seems to
>>> be flipped.  You will also notice that the OffAxisProjection is more zoomed
>>> than the Slice, but don't let this distract you :)
>>>
>>> I have no idea what has gone wrong here.  Any help, as always, is really
>>> appreciated.
>>>
>>> Thanks,
>>> Stephanie
>>> --
>>> Dr. Stephanie Tonnesen
>>> Alvin E. Nashman Postdoctoral Fellow
>>> Carnegie Observatories, Pasadena, CA
>>> stonnes at gmail.com
>>>
>>> _______________________________________________
>>> yt-users mailing list
>>> yt-users at lists.spacepope.org
>>> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>>>
>>>
>>
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