[Chimera-users] how to export the volume data which is stored in the memory?

Zhiheng Yu zhiheng at caltech.edu
Tue Dec 4 10:26:16 PST 2007

Hi Tom,

Thanks for your prompt reply. All my maps are displayed with stepsize 
1,1,1. I can rotate them, change contour level and do all sorts of 
manipulations as normal. But I can not save them. I attached the 
traceback as a file.

Thanks for your help.


Tom Goddard wrote:
> Hi Zhiheng,
>  Chimera keeps the map in memory if it is being displayed.  You can 
> see if your maps are in memory using the Chimera volume dialog menu 
> entry Features / Data Display Options and pressing the data cache 
> "Current use" button.  If your map is displayed with step size > 1 
> then only a subsampled copy of the map is in memory (e.g. every other 
> data plane).
>  The fact that you get an IO error when trying to save the map from 
> Chimera with volume dialog menu entry File / Save map as... suggests 
> that the map is not all in memory and is trying to read the map in 
> order to write the full resolution file.  If you sent the Chimera 
> traceback I could give a more definitive answer.  There is no 
> capability to write out just the subsampled part of the map which is 
> in memory.
>    Tom
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