[Paraview] [EXTERNAL] Re: Visualize density (a galaxy of stars)

[Anders Logg]

Good idea, I tried it just now. It didn't seem to improve much over the
1-pixel dots I used before but this technique may come in handy later -
thanks!

--
Anders


fre 26 juni 2015 kl 19:11 skrev Scott, W Alan <wascott at sandia.gov>:

>  Very nice.
>
>
>
> I don’t think it will improve on what you are doing, but you may want to
> try adding a glyph filter.  Then, change the glyph type to sphere, and make
> the spheres really small.  You could then color the spheres by velocity or
> star age or star size or ...  You could also make the spheres larger and/or
> smaller depending on a variable (star temperature?)
>
>
>
> Alan
>
>
>
> *From:* ParaView [mailto:paraview-bounces at paraview.org] *On Behalf Of *Anders
> Logg
> *Sent:* Friday, June 26, 2015 5:32 AM
> *To:* Paluszek, Lukasz
> *Cc:* ParaView Mailing List
> *Subject:* [EXTERNAL] Re: [Paraview] Visualize density (a galaxy of stars)
>
>
>
> Thanks for the good suggestions! I ended up going with the point cloud
> option. I'm very happy how it turned out:
>
>
>
> http://www.math.chalmers.se/~logg/tmp/vp_torus.avi
>
>
>
> Again, special thanks to Chris for pointing me to this option.
>
>
>
> --
>
> Anders
>
>
>
> fre 26 juni 2015 kl 12:32 skrev Paluszek, Lukasz <
> lukasz.paluszek at airbus.com>:
>
> Hello Anders,
>
> I don't know what your expectations as to how sharp the image should be
> are, but your data set is too coarse to obtain a sharper rendering. What I
> suggest is that you either refine your mesh or you resample your data onto
> a finer vti image and then do the volume rendering. I have attached a
> picture with your original galaxy and a resampled one, perhaps this is what
> you are looking for. I must admit though, that the left image looks more
> "Hubble-like" :-).
>
> Regards,
> Lukasz
>
>
>
>
>
> Łukasz Paluszek
> Airbus Helicopters
> Aerodynamics Department (ETGA)
> 86607 Donauwörth
> Germany
> Tel.: +49 (90) 671 8231
> Fax.: +49 (90) 671 9122
> Lukasz.Paluszek at airbus.com
>
> -----Original Message-----
> From: ParaView [mailto:paraview-bounces at paraview.org] On Behalf Of Chris
> Richardson
> Sent: 26 June 2015 10:16
> To: Anders Logg
> Cc: ParaView Mailing List
> Subject: Re: [Paraview] Visualize density (a galaxy of stars)
>
> On 26/06/2015 08:36, Anders Logg wrote:
> > Sure!
> >
> > http://www.math.chalmers.se/~logg/tmp/torus.vtu.gz [6]
> >
> > Ideally I would like to visualize this as a glowing torus-shaped
> > galaxy in empty space.
> >
> > PS: A friend tipped me to visualize the data as a point cloud instead
> > so I'm currently experimenting with sampling the density data to form
> > a point cloud (outside of ParaView). This might be a better
> > alternative than visualizing the density directly.
> >
>
> You could also try contouring it at different levels, and turning opacity
> to ~0.5 or so.
>
> Chris
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