[yt-users] Fwd: smoothed particle velocities onto unigrid

[Nathan Goldbaum]

Hi Alex, Desika

I think the issue is that add_deposited_particle_field doesn't support
vector fields.

FWIW, there are already deposited velocity fields for each of the velocity
components defined for that dataset.

See: https://bpaste.net/show/3f6d25193a2b

-Nathan

On Wed, Mar 23, 2016 at 10:57 AM, Alex Hill <ashill at haverford.edu> wrote:

> This email went to my junk folder, and it seems that may have been true
> for others, so Desika asked me to forward it back to the list.
>
> Cheers,
>  Alex
>
> Begin forwarded message:
>
> *From: *Desika Narayanan <desika.narayanan at gmail.com>
> *Subject: **[yt-users] smoothed particle velocities onto unigrid*
> *Date: *March 23, 2016 at 11:04:28 EDT
> *To: *yt-users <yt-users at lists.spacepope.org>
> *Reply-To: *desika.narayanan at gmail.com, Discussion of the yt analysis
> package <yt-users at lists.spacepope.org>
>
> Hey All,
>
> I'm having some trouble smoothing particle velocities onto a uniform
> (arbitrary_grid) grid.  The basic idea is that I create an arbitrary grid,
> then want to access the particle quantities smoothed onto that grid.  Some
> are relatively easy, like:
>
> mass =  obj[('deposit','PartType0_mass')].in_units('Msun')
>
>
> and for others, where deposited fields don't already exist, I can create
> those fields and it all works well:
>
> ds.add_deposited_particle_field(('PartType0', 'Temperature'),'sum')
> temp = obj[('deposit', 'PartType0_sum_Temperature')]
>
> but when either trying to access a deposited particle field, or creating
> one with the velocities, errors are abound.  I'm sure I'm just doing
> something foolish, but could use a little nudge in the right direction.  I
> created a self-contained script using the gadget zoom data set on the yt
> datsets to show the problem, with two different error messages pastebinned
> (links in the script) here:
>
> http://paste.yt-project.org/show/6352/
>
> any help would be greatly appreciated!
>
> thanks,
> desika
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