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

[Scott, W Alan]

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<mailto: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<mailto:Lukasz.Paluszek at airbus.com>

-----Original Message-----
From: ParaView [mailto:paraview-bounces at paraview.org<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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