[Chimera-users] volume eraser and imod isosurface

Elaine Meng meng at cgl.ucsf.edu
Wed Jan 6 09:07:20 PST 2016

Dear Wouter,
The issue is that an IMOD file makes surfaces in Chimera, not a volume model (map or density grid with associated values at each grid point).

Volume Eraser only works with volume models, formats listed here:

Maybe your original data was or could be written in one of those formats?

Also, Hide Dust only hides small surface bits; it does not delete any data.

I hope this makes it clearer,
Elaine C. Meng, Ph.D.                       
UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

P.S. appears to be a duplicate question, I’ll just answer this one

On Jan 6, 2016, at 6:39 AM, Wouter Van Putte <wouter.vanputte at gmail.com> wrote:

> Dear,
> I would like to use chimera for removing some densities manually of an isosurface generated with imod. I've loaded the map/model (.mod) and already used the function 'hide dust' to remove most of the noise. I now would like to use 'volume eraser' to remove the other noise manually. This however doesn't work, probably due to the file format (.mod). I thought saving in another file format would help, but it gave me errors when opening the file. How should I proceed?
> best wishes,
> Wouter

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