[3dem] Remove negative density from a map
Daniel Castano Diez
daniel.castano at unibas.ch
Mon Apr 29 03:26:50 PDT 2013
Hi Max,
these kind of manipulations (pixelwise operations on volumes) are easy
in Matlab (or in the Dynamo command line if you don't have a Matlab
license), for instance in your case:
>> dread mymap.mrc a; % reads your map into the Matlab/Dynamo workspace
>> a(a<0)=0; % now it's just an array that you can manipulate
from the command line and then write again into a .mrc file
cheers,
D.
> Dear all
> Does anybody know how to remove negative density (set to zero) from a mrc map?
> I subtracted two structures to highlight a factor and the negative peaks are making my life miserable.
> Best
> Max
>
> __________________________________
> Massimiliano Maletta
> post-doc in
> NKI Netherlands Cancer Institute -Antoni van Leeuwenhoek Hospital Plesmanlaan 121 B6 1066CX Amsterdam
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