Adding a service to a remotely served dataset
Glenn.Rutledge
Glenn.Rutledge at noaa.gov
Mon Jul 9 09:13:07 MDT 2007
understood. GR
Roy Mendelssohn wrote the following on 7/9/2007 11:01 AM:
> Hi Glenn:
>
> No problem. But we were interested in the general problem, as there
> are other datasets which also do not have WCS and which we would like
> to add it, rather than trying to get each of them to add it (Some
> just have an OPeNDAP server, not a THREDDS server). Yours allowed me
> to give Ethan a concrete example so he could look at the catalogs.
>
> Thanks,
>
> -Roy
> On Jul 9, 2007, at 7:52 AM, Glenn.Rutledge wrote:
>
>> Hello Roy-
>> That particular dataset will be turned on shortly via WCS. That was
>> an oversight. Nice to have users telling us where we need stuff!
>> Glenn
>>
>> Ethan Davis wrote the following on 7/6/2007 6:02 PM:
>>> Hi Roy,
>>>
>>> Looks like you are referencing NCDC catalogs rather than serving the
>>> datasets yourself. So, users would get redirected to the NCDC server
>>> and access the data through the NCDC server. So, as things stand,
>>> NCDC would have to add the WCS service.
>>>
>>> You could point to each NCDC dataset with an NcML wrapper and
>>> actually serve the data from your server rather than redirecting to
>>> NCDC. If you did that, you could add the WCS service. However, the
>>> performance wouldn't be as good as direct from NCDC.
>>>
>>> I'm afraid I don't know about the WCS request for a time range. So,
>>> I'll leave that for others to answer.
>>>
>>> Ethan
>>>
>>> Roy Mendelssohn wrote:
>>>> Hi Ethan:
>>>>
>>>> I am not certain I follow. To be more specific, look at:
>>>>
>>>> http://oceanwatch.pfeg.noaa.gov/thredds/catalog.html
>>>>
>>>> and scroll down to the datasets " Remote test to Nomads THREDDS
>>>> catalog", which is actually on a THREDDS server on an NCDC
>>>> computer. They are remotely served through catalogs. Can we add
>>>> the WCS service on our end, or will it only work if NCDC adds the
>>>> WCS service.
>>>>
>>>> While I have your attention, I have not been able to get a straight
>>>> answer if there is a way to send the WCS request to get a time
>>>> range, rather than a single time, and if so what is the syntax for
>>>> that.
>>>>
>>>> Thanks,
>>>>
>>>> -Roy
>>>>
>>>> On Jul 6, 2007, at 11:24 AM, Ethan Davis wrote:
>>>>
>>>>> Hi Roy,
>>>>>
>>>>> If you are actually serving the dataset through your server (which
>>>>> it sounds like you are since you mention existing NcML for the
>>>>> dataset) rather than providing a link in your catalog to the
>>>>> remote server, I believe you can simply add the WCS service to
>>>>> your TDS configuration catalog and serve the data via WCS. It
>>>>> shouldn't require any changes to the NcML, just to the service
>>>>> element in the catalog.
>>>>>
>>>>> Of course, this depends on the dataset meeting the WCS server
>>>>> requirements, e.g., evenly spaced grid.
>>>>>
>>>>> I'm not sure how it would perform. But I'll leave it for John to
>>>>> respond on that.
>>>>>
>>>>> Ethan
>>>>>
>>>>> Roy Mendelssohn wrote:
>>>>>> Hi:
>>>>>>
>>>>>> The question for today is if our TDS is "serving" a dataset
>>>>>> remotely (ie. the remote site has their own TDS and we just link
>>>>>> indirectly to it), can we add a service to our version that they
>>>>>> don't have (just like we can aggregate a remote dataset that is
>>>>>> not aggregated). In particular the remote dataset only has an
>>>>>> OPeNDAP response, but we would like to be able to respond to both
>>>>>> an OPeNDAP and a WCS response.
>>>>>>
>>>>>> If we change our NcML appropriately, will that work?
>>>>>>
>>>>>> Thanks in advance,
>>>>>>
>>>>>> -Roy
>>>>>>
>>>>>> **********************
>>>>>> "The contents of this message do not reflect any position of the
>>>>>> U.S. Government or NOAA."
>>>>>> **********************
>>>>>> Roy Mendelssohn
>>>>>> Supervisory Operations Research Analyst
>>>>>> NOAA/NMFS
>>>>>> Environmental Research Division Southwest Fisheries Science Center
>>>>>> 1352 Lighthouse Avenue
>>>>>> Pacific Grove, CA 93950-2097
>>>>>>
>>>>>> e-mail: Roy.Mendelssohn at noaa.gov (Note new e-mail address)
>>>>>> voice: (831)-648-9029
>>>>>> fax: (831)-648-8440
>>>>>> www: http://www.pfeg.noaa.gov/
>>>>>>
>>>>>> "Old age and treachery will overcome youth and skill."
>>>>>>
>>>>>>
>>>>>>
>>>>>> ===============================================================================
>>>>>>
>>>>>> To unsubscribe thredds, visit:
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>>>>>>
>>>>>
>>>>> --Ethan R. Davis Telephone: (303)
>>>>> 497-8155
>>>>> Software Engineer Fax: (303)
>>>>> 497-8690
>>>>> UCAR Unidata Program Center E-mail:
>>>>> edavis at ucar.edu
>>>>> P.O. Box 3000
>>>>> Boulder, CO 80307-3000
>>>>> http://www.unidata.ucar.edu/
>>>>> ---------------------------------------------------------------------------
>>>>>
>>>>>
>>>>>
>>>>
>>>> **********************
>>>> "The contents of this message do not reflect any position of the
>>>> U.S. Government or NOAA."
>>>> **********************
>>>> Roy Mendelssohn
>>>> Supervisory Operations Research Analyst
>>>> NOAA/NMFS
>>>> Environmental Research Division Southwest Fisheries Science Center
>>>> 1352 Lighthouse Avenue
>>>> Pacific Grove, CA 93950-2097
>>>>
>>>> e-mail: Roy.Mendelssohn at noaa.gov (Note new e-mail address)
>>>> voice: (831)-648-9029
>>>> fax: (831)-648-8440
>>>> www: http://www.pfeg.noaa.gov/
>>>>
>>>> "Old age and treachery will overcome youth and skill."
>>>>
>>>>
>>>
>>
>> --Glenn K. Rutledge
>> Services Team Leader
>> Remote Sensing and Applications Division
>> NOMADS Project Manager
>> National Oceanic and Atmospheric Administration
>> National Climatic Data Center
>> Asheville NC 28801
>> Phone: (828) 271-4097
>> Fax: (828) 271-4328
>>
>> NOMADS: http://nomads.ncdc.noaa.gov/
>>
>
> **********************
> "The contents of this message do not reflect any position of the U.S.
> Government or NOAA."
> **********************
> Roy Mendelssohn
> Supervisory Operations Research Analyst
> NOAA/NMFS
> Environmental Research Division
> Southwest Fisheries Science Center
> 1352 Lighthouse Avenue
> Pacific Grove, CA 93950-2097
>
> e-mail: Roy.Mendelssohn at noaa.gov (Note new e-mail address)
> voice: (831)-648-9029
> fax: (831)-648-8440
> www: http://www.pfeg.noaa.gov/
>
> "Old age and treachery will overcome youth and skill."
>
>
>
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>
> To unsubscribe thredds, visit:
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>
>
--
Glenn K. Rutledge
Services Team Leader
Remote Sensing and Applications Division
NOMADS Project Manager
National Oceanic and Atmospheric Administration
National Climatic Data Center
Asheville NC 28801
Phone: (828) 271-4097
Fax: (828) 271-4328
NOMADS: http://nomads.ncdc.noaa.gov/
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