On Wed, Aug 27, 2014 at 12:30 PM, Nathan Goldbaum <nathan12343(a)gmail.com> wrote:
Thanks for the hint, this modification seems to fix things:
I'll be PRing that shortly after testing it out today.
Back to my original question - do you you know where in the code the
deposited fields are set up? I'd like to look there to see how I should set
up deposited particle velocity fields.
On Wed, Aug 27, 2014 at 8:06 AM, Matthew Turk <matthewturk(a)gmail.com> wrote:
> Hi Nathan,
> Hmm, this looks to me like it could be fixed by smoothing onto the
> final field, rather than an intermediate step. Does that match your
> expectations? If so, in the past we've had ways to declaring that
> some fields are derived at the level of the final result. Perhaps
> anything in the "deposit" namespace could be special-cased that way.
> On Tue, Aug 26, 2014 at 7:16 PM, Nathan Goldbaum <nathan12343(a)gmail.com>
> > Backing up, there seems to be issues with creating smoothed covering
> > grids
> > of any deposited particle field.
> > Take for example the following script:
> > http://paste.yt-project.org/show/5068/
> > This produces the following traceback:
> > http://paste.yt-project.org/show/5069/
> > To fix the error, I tried making the following modification to yt:
> > Unfortunately this doesn't help because the smoothed covering grid's
> > _fill_fields function never gets called, which means
> > _initialize_level_state
> > never gets called either. I'm poking around in the smoothed covering
> > grid
> > to try to fix this but any help from someone who's more familiar with
> > this
> > part of the code would be very much appreciated.
> > -Nathan
> > On Tue, Aug 26, 2014 at 1:33 PM, Nathan Goldbaum <nathan12343(a)gmail.com>
> > wrote:
> >> Hi all,
> >> I'd like to setup deposition fields for particle velocities. This
> >> means
> >> doing a mass-weighted nearest neighbor or cloud-in-cell deposition of
> >> the
> >> particle velocities in a grid dataset. I'm using this to analyze the
> >> stellar velocity dispersions in a simulation, so it's much more
> >> convenient
> >> to have the particle velocities interpolated onto a grid to calculate
> >> the
> >> local velocity dispersion using a 3D convolution.
> >> Does anyone have an example of setting up a particle deposition field?
> >> If
> >> not, where should I look in the source?
> >> Thanks for your help!
> >> -Nathan
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