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Re: [Imgcif-l] CBF - Adding binary proprietary format header dump

Hi Justin

If you want to keep the Mar header items, why not just keep on  
writing Mar format images (which are well-supported by all the major  
integration programs)?

As a developer, I think I would prefer you to write all the Mar  
header items as CIF header items, if you want to write CBFs. If the  
imgCIF items don't exist, tell the community and I'm sure they could  
be accommodated.

Mosflm will _only_ read the imgCIF header items and ignore any  
comments or non-image MIME components (why on earth would I spend  
time writing code to read both kinds of header item from an image  
file when the imgCIF headers are supposed to be definitive?), and my  
understanding is that XDS doesn't read the CBF or Mar header items in  
any case. I don't know about d*Trek or HKL...

On 24 Sep 2007, at 20:51, Justin Anderson wrote:

> Hi Harry, thanks for the reply.
>
> We were wanting to dump in our binary header so that we could read it
> directly in to the marccd program and be able to recover the entire
> original header that way (regardless of which of our header items are
> mapped to CIF header fields).
>
> What were your concerns with having it in the file?
>
> Regards,
>
> Justin
>
>
> On 09/24/2007 02:38 PM, harry powell wrote:
>> Hi
>>
>> I don't understand why you'd want to add the binary header, to be
>> honest. I can see why you might want to have the contents of the
>> header as an ASCII comment section - but I think this should just be
>> a check while developing the file format.
>>
>> Could you elaborate why you'd want it there?
>>
>>> Hello everyone,
>>>
>>> We here would, in fact, like to add our binary header to the CBF  
>>> file.
>>> Should that just go into an additional binary section, with MIME
>>> header
>>> and all of that?  If so, is there any recommendation as to how we  
>>> can
>>> refer to it in the CIF headers so that I can distinguish between the
>>> binary image data and our binary header data?  My inclination is to
>>> add
>>> the ".header_convention" column to my "_array_data" loop and fill
>>> it in
>>> with "RAY_1.0" or something like that for the our binary header and
>>> with
>>>   an empty value "" for the image data.
>>>
>>> e.g. :
>>>
>>> loop_
>>> _array_data.array_id
>>> _array_data.binary_id
>>> _array_data.header_convention
>>> _array_data.data
>>>   ARRAY1 1 RAY_1.0
>>> ;
>>> --CIF-BINARY-FORMAT-SECTION--
>>> <<MIME header for Rayonix binary header dump>>
>>> <<Rayonix binary header dump>>
>>> --CIF-BINARY-FORMAT-SECTION----
>>> ;
>>>   ARRAY2 2
>>> ;
>>> --CIF-BINARY-FORMAT-SECTION--
>>> <<MIME header for image binary data>>
>>> <<Image binary data>>
>>> --CIF-BINARY-FORMAT-SECTION----
>>> ;
>>>
>>>
>>>
>>>
>>> Regards,
>>>
>>> -- 
>>> Justin Anderson                    Rayonix, LLC (Formerly Mar USA)
>>> Software Engineer                  justin@rayonix.com
>>> 1880 Oak Ave. Ste. 120             Evanston, IL, USA 60201
>>> 877.627.9729                       847.869.1548
>>> _______________________________________________
>>> imgcif-l mailing list
>>> imgcif-l@iucr.org
>>> http://scripts.iucr.org/mailman/listinfo/imgcif-l
>>
>> Harry
> _______________________________________________
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Harry
-- 
Dr Harry Powell, MRC Laboratory of Molecular Biology, MRC Centre,  
Hills Road, Cambridge, CB2 2QH




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