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). <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/filetypes.html#object> Volume Eraser only works with volume models, formats listed here: <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/filetypes.html#volume> 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 ----- 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@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