On Mar 1, 2012, at 8:49 AM, John Caron wrote:
> Hi all:
>
> If the checker can read from opendap, then putting the files on an opendap server might be helpful, in
> that only the metadata is read instead of the entire file.
>
> There are a few difference among servers (Hyrax, TDS, GDS, etc) but im pretty sure this would work for
> netcdf files well enough for the checker's needs. could be worth finding out.
Good idea! We have a server running on test.opendap.org that we would be willing to let others use.
James
>
> john
>
> On 2/29/2012 7:55 AM, Bentley, Philip wrote:
>> Hi Stephen,
>>
>> I may well be wrong, but I suspect that one of the reasons - perhaps the
>> main reason - why folks would like access to a stand-alone cfchecker
>> utility is the large size of their netcdf files. (It's certainly the
>> reason we use a local version.)
>>
>> As you know only too well (from CMIP5), most of the netcdf files we're
>> dealing with these days run into the high 100s of MB or low GBs. It's
>> not really practical to upload such files in order to perform a CF
>> compliance check. At least not on more than a few files.
>>
>> I wonder, therefore, if a possible solution is to develop an alternative
>> checker utility that operates not on the netcdf file itself, but rather
>> on the header info output by the ncdump -h command. Generating and
>> uploading those would be trivial by comparison.
>>
>> Off the top of my head (and having given it almost zero thought!) the
>> only test that I can think of which examines the actual data values is
>> the check for coord vars being monotonic. But I suspect there are others
>> I'm unaware of.
>>
>> If nothing else, such a utility might have some value as a 'first pass'
>> checker.
>>
>> Any mileage in this? Apologies if it's already done the rounds!
>>
>> Regards,
>> Phil
>>
>>
>>> -----Original Message-----
>>> From: cf-metadata-bounces at cgd.ucar.edu
>>> [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf Of
>>> stephen.pascoe at stfc.ac.uk
>>> Sent: 29 February 2012 11:39
>>> To: christopher.s.lynnes at nasa.gov; cf-metadata at cgd.ucar.edu
>>> Subject: Re: [CF-metadata] machine-accessible CF compliance checker?
>>>
>>> Hi Christopher,
>>>
>>> Are you looking for a way to run the cfchecker locally or
>>> submit checking requests to one of the websites in a script?
>>>
>>> I think both would be possible with a little help. The
>>> cfchecker is now available on the Python Package Index at
>>> http://pypi.python.org/pypi/cfchecker. It needs a little
>>> help to work out of the box -- you need to configure UDUNITS
>>> and the location of several CF XML files. It's on my
>>> long-term TODO list to make this configuration easier.
>>>
>>> Also the CF-checker at BADC and NCAS-CMS has a very simple
>>> HTTP interface that could be scripted.
>>>
>>> Cheers,
>>> Stephen.
>>>
>>> ---
>>> Stephen Pascoe +44 (0)1235 445980
>>> Centre of Environmental Data Archival
>>> STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot
>>> OX11 0QX, UK
>>>
>>>
>>> -----Original Message-----
>>> From: cf-metadata-bounces at cgd.ucar.edu
>>> [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf Of
>>> Lynnes, Christopher S. (GSFC-6102)
>>> Sent: 28 February 2012 16:03
>>> To: cf-metadata at cgd.ucar.edu
>>> Subject: [CF-metadata] machine-accessible CF compliance checker?
>>>
>>> I know about the web sites where you use a form to upload
>>> files to check CF compliance, but is there a service
>>> somewhere that can be accessed by a script?
>>> --
>>> Dr. Christopher Lynnes NASA/GSFC, Code 610.2 phone:
>>> 301-614-5185
>>>
>>>
>>> _______________________________________________
>>> CF-metadata mailing list
>>> CF-metadata at cgd.ucar.edu
>>> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
>>> --
>>> Scanned by iCritical.
>>> _______________________________________________
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>>> CF-metadata at cgd.ucar.edu
>>> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
>>>
>> _______________________________________________
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>
> _______________________________________________
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> CF-metadata at cgd.ucar.edu
> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
--
James Gallagher
jgallagher at opendap.org
406.723.8663
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Received on Thu Mar 01 2012 - 08:52:43 GMT
