[3dem] converting large date set using em2em
michael at ImageScience.de
Wed Nov 11 09:40:17 PST 2009
I created a large IMAGIC file containing more than 116000 images of size
128x128 (> 7 Gigabyte). I used em2em to convert this IMAGIC file into an
MRC file. The resulting MRC file has a correct size.
Jude Short from MRC/LMB kindly send me a MRC program to read MRC
headers. The print-out showed that all header values were set correctly:
image size, the number of images in the file, and other header values.
So em2em worked without any error.
As far as I understood you checked your MRC file using an EMAN tool. May
be you can check if this program has a problem with the large image size
or the large number of images.
Zongli Li wrote:
> Dear all,
> I have been trying to convert a large data set (> 6G) of boxed
> particle images from IMAGIC stack file to MRC stack file using IMAGIC
> em2em, but always get an invalid MRC output file. The program works
> just fine for small data set. Does anyone knows how to fix the problem
> or have other way to convert the large data set from IMAGIC stack to
> MRC stack?
> Thanks a lot! Any help or suggestion will be highly appreciated.
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