[yt-users] producing smooth sliceplots instead of pixelated sliceplot images

[tazkera haque]

Thanks very much for the discussions and suggestions Timothy, Nathan and
Matt. I will follow the links and follow up with you.

Best
Tazkera

On May 30, 2017 10:48 AM, "Matthew Turk" <matthewturk at gmail.com> wrote:

> On Tue, May 30, 2017 at 9:44 AM, Nathan Goldbaum <nathan12343 at gmail.com>
> wrote:
> > Assuming these are slices through an AMR simulation, you could try
> manually
> > plotting the images using matplotlib's imshow command:
> >
> > https://matplotlib.org/devdocs/api/_as_gen/matplotlib.axes.Axes.imshow.
> html#matplotlib-axes-axes-imshow
> >
> > In particular experimenting with the "interpolation" keyword argument. By
> > default, yt uses "interpolation='nearest'" (see
> > https://github.com/yt-project/yt/blob/master/yt/
> visualization/base_plot_types.py#L218)
> > as this is the "truest" representation of voxelized data in a pixelized
> > representation.
>
> One thing to note that the interpolation matplotlib will apply is not
> based on the AMR cells, but the regularization of those cells to a
> fixed buffer.  So you'll still see the voxels, but they'll be fuzzy at
> the very edges.
>
> >
> > You can see how different interpolation choices look in this example in
> the
> > matplotlib docs:
> >
> > https://matplotlib.org/examples/images_contours_and_
> fields/interpolation_methods.html
> >
> > This choice to use "interpolation='nearest'" in SlicePlot was intentional
> > and I don't think we want to expose the ability to customize the
> > interpolation, but of course you can create your own visualizations
> outside
> > of SlicePlot using a FixedResolutionBuffer and the manual plotting
> > interface.
> >
> > On Tue, May 30, 2017 at 9:34 AM, Matthew Turk <matthewturk at gmail.com>
> wrote:
> >>
> >> Hi Tazkera,
> >>
> >> There's not, unfortunately.  We have experimented with this in the
> >> past, but the results weren't ever satisfactory.  You might try a very
> >> thin slice with an off-axis projection, which may accomplish the same
> >> result.
> >>
> >> -Matt
> >>
> >> On Tue, May 30, 2017 at 12:06 AM, tazkera haque <h.tazkera at gmail.com>
> >> wrote:
> >> > Hi People,
> >> >
> >> > I was wondering if yt can produce smooth images of zoomed-in
> sliceplots,
> >> > where the pixelated AMR grids are not clearly visible. I was
> interested
> >> > to
> >> > see the colors get mixed in smoothly (something like
> >> > tetrahedralization), is
> >> > that possible anyway in yt?
> >> >
> >> > Best
> >> > Tazkera
> >> >
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