[mcstas-users] NeXuS format

[Vasily]

Dear Emmanuel,

Thank you very much for your reply. Now everything is completely
understandable.

Best regards,
Vasily

В письме от Пнд, 28 Фев 2011, 15:56 Emmanuel FARHI пишет:
> Hello Vasily,
>
> the 'NeXus' format generated by McStas is not a 'pure' NeXus, because
> there is no 'pure' NeXus. The naming of fields is not 'official', as
> indicated in the error report you sent. It does not mean that the file
> is corrupted...
>
> However you can open the files with e.g. hdfview and notice that they
> look like a normal NeXus files. If you whant to generate XML files, you
> may use the --format=XML option to mcrun, which will write a NeXus-like
> XML file (but not 100% nexus).
>
> Emmanuel.
>
> On 02/28/2011 12:56 PM, Vasily wrote:
>> Dear all,
>> We try to use the NeXuS format for output and we have some troubles with
>> validating in NeXus.
>>
>> What we do:
>> #1 Translate into C code
>> mcstas -o ./SANS.c -I ./ -t --verbose
>> /usr/lib/mcstas/examples/SANS.instr
>> #2 Compiling with NeXuS:
>> icc -o ./SANS.out ./SANS.c -lmpi -DUSE_NEXUS -lNeXus
>> #3 Run:
>> mcrun ./SANS.out --mpi=4 --ncount=1000000 --file=out1.nxs --format=NEXUS
>> Lambda=6 D_lambda=0.05 r=100 PHI=0.001 Delta_Rho=0.6 Sigma_a=0.5
>> Qmax=0.3
>>
>> mcrun ./SANS.out --mpi=4 --ncount=1000000 --file=out1.xml --format=XML
>> Lambda=6 D_lambda=0.05 r=100 PHI=0.001 Delta_Rho=0.6 Sigma_a=0.5
>> Qmax=0.3
>>
>> #4 Try to convert with the NeXuS tool
>> (http://download.nexusformat.org/doc/html/Utilities.html )
>>
>> nxconvert -x out1.nxs out2.xml
>>
>> Error: "Converting out1.nxs to XML NeXus file out2.xml
>> No dataset open"
>>
>> # Try to validate
>> nxvalidate out1.xml
>>
>> Error:
>> * Validating out1.xml using definition BASE.xsd
>> Corrupted file, userData for X_position__cm_ not found
>> * Error converting file out1.xml to definiton XML format
>>
>> If somebody knows about this let me know, please.
>>
>> Best wishes,
>> Vasily
>>
>
> --
> Emmanuel FARHI,www.ill.eu/computing/people/emmanuel-farhi \|/ ____ \|/
> CS-Group ILL4/221, Institut Laue-Langevin (ILL) Grenoble  ~@-/ oO \-@~
> 6 rue J. Horowitz, BP 156, 38042 Grenoble Cedex 9,France  /_( \__/ )_\
> Work :Tel (33/0) 4 76 20 71 35. Fax (33/0) 4 76 48 39 06     \__U_/
>
>


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