[Chimera-users] phenix map not reading in chimera

Thomas Goddard goddard at cgl.ucsf.edu
Wed Dec 2 14:26:04 PST 2009

Hi Geoffrey,

   The maps output from phenix.refine are in ASCII X-PLOR format.


The file suffix ".map" is assumed by Chimera to be a different format 
CCP4 map format.  To read your maps set the File Type in the Chimera 
Open dialog to "all (ask type)" and after you choose the file and press 
the open button tell it the map is "CNS or XPLOR density map". 
Alternatively rename the with file suffix ".xplor" or ".cns" so Chimera 
will automatically recognize the type.  A third approach is to use the 
Chimera command-line (Favorite menu) and a command like "open 
xplor:mymap.map" with the "xplor:" prefix in front of the file name.


-------- Original Message --------
Subject: [Chimera-users] phenix map not reading in chimera
From: Geoffrey Feld
To: chimera-users
Date: 12/2/09 1:46 PM

> Greetings,
> I'm trying to make a figure showing off my best density from a 2Fo-Fc 
> map I generated using phenix.refine. The output file has a .map suffix. 
> However, Chimera gives an error about the header, which I've included: 
> MRC header value nsymbt (538976288) is invalid. How do I give Chimera a 
> map with a header it can read?
> Thanks,
> -- 
> Geoffrey K. Feld
> Department of Chemistry
> 492 Stanley Hall
> University of California, Berkeley
> "Vigilia pretium libertatis"

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