How to reduce subdivision of the mesh?
Dear ChimeraX Development Team, I hope this email finds you well. First and foremost, I would like to express my heartfelt gratitude for developing such a powerful and invaluable tool like ChimeraX. Your dedication to providing the scientific community with a free and versatile platform is truly remarkable. I am writing to inquire about a technical aspect related to exporting 3D models in ChimeraX. I'm using ChimeraX-1.1.1 to export protein meshes(surface model) into Blender. I've got a problem that the mesh is too smooth which means it has too many vertices. And that makes my Blender run very slow. Is there a way to reduce the subdivision(resolution/vertex number) of the mesh in ChimeraX? Thank you very much! Looking forward to your reply. Regards, Hualing [image: image.png]
Dear Hualing, Thanks for your kind words! There are options in the "surface" command for gridSpacing and resolution. Normally if you just use "surface" it will make a molecular surface, but if you use the resolution option, it will calculate a Gaussian surface instead, potentially with lower resolution depending on the value you give. The gridSpacing option affects both molecular and Gaussian surfaces, and again you can give a larger value to get fewer vertices. For a more detailed explanation of these as well as many other options, please see the "surface" command documentation: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/surface.html> The above applies to surfaces calculated for atomic structures. For isosurfaces on density maps, there are options in the "volume" command for controlling the surface mesh: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#dispsurf> I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco
On Aug 29, 2023, at 8:18 AM, HL F via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
Dear ChimeraX Development Team,
I hope this email finds you well. First and foremost, I would like to express my heartfelt gratitude for developing such a powerful and invaluable tool like ChimeraX. Your dedication to providing the scientific community with a free and versatile platform is truly remarkable.
I am writing to inquire about a technical aspect related to exporting 3D models in ChimeraX. I'm using ChimeraX-1.1.1 to export protein meshes(surface model) into Blender. I've got a problem that the mesh is too smooth which means it has too many vertices. And that makes my Blender run very slow. Is there a way to reduce the subdivision(resolution/vertex number) of the mesh in ChimeraX? Thank you very much!
Looking forward to your reply.
Regards, Hualing <image.png>
Wow it works! The vertices are significantly reduced after I reset the resolution and gridSpacing. Thank you so much Elaine! Have a great week :) On Tue, Aug 29, 2023 at 12:09 PM Elaine Meng <meng@cgl.ucsf.edu> wrote:
Dear Hualing, Thanks for your kind words!
There are options in the "surface" command for gridSpacing and resolution. Normally if you just use "surface" it will make a molecular surface, but if you use the resolution option, it will calculate a Gaussian surface instead, potentially with lower resolution depending on the value you give. The gridSpacing option affects both molecular and Gaussian surfaces, and again you can give a larger value to get fewer vertices.
For a more detailed explanation of these as well as many other options, please see the "surface" command documentation:
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/surface.html>
The above applies to surfaces calculated for atomic structures. For isosurfaces on density maps, there are options in the "volume" command for controlling the surface mesh:
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#dispsurf>
I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco
On Aug 29, 2023, at 8:18 AM, HL F via ChimeraX-users < chimerax-users@cgl.ucsf.edu> wrote:
Dear ChimeraX Development Team,
I hope this email finds you well. First and foremost, I would like to express my heartfelt gratitude for developing such a powerful and invaluable tool like ChimeraX. Your dedication to providing the scientific community with a free and versatile platform is truly remarkable.
I am writing to inquire about a technical aspect related to exporting 3D models in ChimeraX. I'm using ChimeraX-1.1.1 to export protein meshes(surface model) into Blender. I've got a problem that the mesh is too smooth which means it has too many vertices. And that makes my Blender run very slow. Is there a way to reduce the subdivision(resolution/vertex number) of the mesh in ChimeraX? Thank you very much!
Looking forward to your reply.
Regards, Hualing <image.png>
participants (2)
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Elaine Meng -
HL F