# Increase particle size for better visualization

**URL:** https://discourse.paraview.org/t/increase-particle-size-for-better-visualization/14595
**Category:** ParaView Support
**Tags:** vtk
**Created:** [May 10, 2024, 9:02am UTC](https://discourse.paraview.org/t/increase-particle-size-for-better-visualization/14595 "2024-05-10T09:02:10Z")
**Posts on this page:** 3
**Page:** 1

<div class="post-metadata">

### Author: ![Guanlong](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/g/82dd89/32.png) [@Guanlong](https://discourse.paraview.org/u/Guanlong)
#### Post date: [May 10, 2024, 9:02am UTC](https://discourse.paraview.org/t/increase-particle-size-for-better-visualization/14595/1 "2024-05-10T09:02:10Z")

</div>

Hello researchers, I have successfully imported the VTK literature, but found that the particles are too small for observation. Is there a way to increase the size of the particles in order to better observe their movement? I would greatly appreciate it if this issue could be resolved.  
[222.zip](https://discourse.paraview.org/uploads/short-url/ydUeVGaI8CplPgG9uaJW5OJ3fOq.zip) (1.6 MB)

---

<div class="post-metadata">

### Author: ![Kenneth\_Moreland](https://discourse.paraview.org/user_avatar/discourse.paraview.org/kenneth_moreland/32/15033_2.png) [@Kenneth\_Moreland](https://discourse.paraview.org/u/Kenneth_Moreland)
#### Post date: [May 10, 2024, 2:59pm UTC](https://discourse.paraview.org/t/increase-particle-size-for-better-visualization/14595/2 "2024-05-10T14:59:10Z")

</div>

There multiple ways to make the points bigger. The most straightforward way is to adjust the point size. The point size is measured in pixels.

 ![Screenshot 2024-05-10 at 10.30.11 AM](https://discourse.paraview.org/uploads/default/original/2X/3/38dd2095e0ff8bfd05323273c37f66404931ab52.png)

Just increasing the point size will just render each particle as a square. If you want a nice sphere representation, then change the representation to `Point Gaussian`. From there you can adjust the radius of the spheres in world units.

 ![Screenshot 2024-05-10 at 10.36.50 AM](https://discourse.paraview.org/uploads/default/original/2X/f/f144396ca830edcacafc1c5f03e1e318465ad3c4.jpeg)

I notice that your data has a `radius` field. That looks like the radius of your particles. You can change the `Point Gaussian` representation to scale the size of the spheres to be the exact size of these radii. Just check the `Use Scale Array` and select the appropriate radius field. You should also change the `Gaussian Radius` to 1 to avoid rescaling.

 ![Screenshot 2024-05-10 at 10.42.44 AM](https://discourse.paraview.org/uploads/default/original/2X/9/9f84a54b8c36a5107b4e42812fe6822012c33fea.jpeg)

One more alternate approach is to use the `Glyph` ![Screenshot 2024-05-10 at 10.45.16 AM](https://discourse.paraview.org/uploads/default/original/2X/e/e74403b6cf131081b7d07e6e0c7b187a28be8550.png) filter. The [`Glyph` filter](https://docs.paraview.org/en/v5.12.0/Tutorials/ClassroomTutorials/beginningSourcesAndFilters.html#glyph-filter) has similar behavior to the point Gaussian representation except that it creates geometry rather than does rendering.

 ![Screenshot 2024-05-10 at 10.47.29 AM](https://discourse.paraview.org/uploads/default/original/2X/f/f069b0358d9dc878f1c9948b32ffae0a75542cbd.jpeg)

You might find more information about particle visualization in a couple of tutorials:

- [Classroom tutorial](https://docs.paraview.org/en/v5.12.0/Tutorials/ClassroomTutorials/targetedParticleSimulations.html)
- [OLCF tutorial](https://kmorel.gitlab.io/pv-tutorial-olcf-2022/particle-data/)

---

<div class="post-metadata">

### Author: ![Guanlong](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/g/82dd89/32.png) [@Guanlong](https://discourse.paraview.org/u/Guanlong)
#### Post date: [May 11, 2024, 1:29am UTC](https://discourse.paraview.org/t/increase-particle-size-for-better-visualization/14595/3 "2024-05-11T01:29:17Z")

</div>

Thank you very much. Your reply has been of great help to me.