Many thanks for responses!
I will try check and find most convenient for me.
14.03.2013 13:39, Loes Kroon-Batenburg пишет:
> I forgot to reply to CCP4BB, but this could be interesting not just
> for Eugene.
>
> Dear Eugene,
>
>
> I have a couple of questions about images compression and storage:
> 1)do someone use it in routine work and does it works well for them?
>
> ->Yes, in Utrecht we do routinely compress images (ncompress). Our data
> processing software EVAL can read those and decompress on the fly.
> This works
> very convient. It depends on the specific image format how efficient the
> compression is. For a discussion on image compression and data
> archiving see our
> paper in Journal of Applied Crystallography, 2013, Volume 46, pages
> 108-119,
> http://dx.doi.org/10.1107/__S0021889812044172
> <http://dx.doi.org/10.1107/S0021889812044172>
>
>
> 2)I found this page by google:
> http://bl831.als.lbl.gov/~jamesh/lossy_compression/
> <http://bl831.als.lbl.gov/%7Ejamesh/lossy_compression/>
> And want to ask about reports of usage of this program (of course if
> someone
> already uses it)
> ->The IUCr has established a Data Depostion Work Group (have a look at
> http://forums.iucr.org/), that is discussing and trying to establish the
> possiblities of long-term storage of diffraction images and raw data
> in general.
> One of this issues is lossy or lossless data compression. I personally
> have no
> experience with lossy data compression.
>
> 3)Is there any advice for long-term diffraction image storage?
> -> There is a policy issue to that. How do we get that arranged for
> diffraction
> data wordwide? For now, we have to find a way to store our raw data
> locally. It
> is certain that every storage system (like USB drives) will fail in
> the end. So
> without active conservation on tapes or raid systems, data will
> eventually get
> lost. Initiatives to preseve data locally are underway, e.g. example the
> Manchester University is setting up a data depository for raw
> scientific data,
> were all data will be indentified by a DOI.
>
> Best wishes,
>
> Loes
>
> ___________________________________________________________
>
> Dr. Loes Kroon-Batenburg
>
> Dept. of Crystal and Structural Chemistry
> Bijvoet Center for Biomolecular Research
> Utrecht University
> Padualaan 8, 3584 CH Utrecht
> The Netherlands
>
> E-mail : [log in to unmask]
> phone : +31-30-2532865
> fax : +31-30-2533940
--
Eugene Osipov
Junior Research Scientist
Laboratory of Enzyme Engineering
A.N. Bach Institute of Biochemistry
Russian Academy of Sciences
Leninsky pr. 33, 119071 Moscow, Russia
e-mail: [log in to unmask]
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