Re: [thredds] Retrieve THREDDS metada from the NetCDF file

If I might rephrase/expand on Rich's comment:
I think we are trying to add relevant metadata, notably CF and ACDD
http://www.unidata.ucar.edu/software/netcdf-java/formats/DataDiscoveryAttConvention.html
metadata to the dataset (sometimes via ncml).
Keeping the data and the canonical version of the dataset's metadata
together is a goal of CF.
That dataset metadata can be harvested by programs like ncISO (and others)
which can generate ISO 19115 metadata.
That ISO 19115 metadata can be harvested using GI-CAT or GeoPortal Server
(and others).

2012/3/8 Rich Signell <rsignell@xxxxxxxx>

> Kristian,
>
> Ah, okay -- I didn't realize you wanted specifically THREDDS metadata.
> To enable search across multiple THREDDS catalogs (as well as other OGC and
> community services) ,  we've be avoiding the direct use of THREDDS metadata
> in favor of the ncISO metadata, which we then harvest using GI-CAT or
> GeoPortal Server.    An application can query GI-CAT or Geoportal Server
> using OpenSearch or CSW, and then process the DAP data URLS matching the
> query constraints.
>
> Is this similar to what you are trying to do?
>
> Thanks,
> Rich
>
> 2012/3/8 Kristian Sebastián <ksebastian@xxxxxxxx>
>
>> Hi Rich,
>>
>> Actually, our Thredds thredds.socib.es have the ncISO services enable.
>> So, I think the ncISO doesn't add  "Time coverage", "Geospatial coverage"
>> and "variables" metadata (link to the dataset example
>> http://thredds.socib.es/thredds/catalog/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/catalog.html?dataset=mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc
>> ):
>>
>>> Catalog
>>> http://thredds.socib.es/thredds/catalog/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/catalog.html
>>>  Dataset:
>>> L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc
>>>
>>>    - *Data size: *1.298 Mbytes
>>>    - *Data type: *STATION
>>>    - *ID: *
>>>    
>>> mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc
>>>
>>> Access:
>>>
>>>    1. *OPENDAP:*
>>>    
>>> /thredds/dodsC/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc<http://thredds.socib.es/thredds/dodsC/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc.html>
>>>    2. *HTTPServer:*
>>>    
>>> /thredds/fileServer/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc<http://thredds.socib.es/thredds/fileServer/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc>
>>>    3. *NCML:*
>>>    
>>> /thredds/ncml/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc<http://thredds.socib.es/thredds/ncml/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc>
>>>    4. *UDDC:*
>>>    
>>> /thredds/uddc/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc<http://thredds.socib.es/thredds/uddc/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc>
>>>    5. *ISO:*
>>>    
>>> /thredds/iso/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc<http://thredds.socib.es/thredds/iso/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc>
>>>
>>> Dates:
>>>
>>>    - 2012-03-08 13:20:02Z *(modified)*
>>>
>>> Properties:
>>>
>>>    - viewer = "
>>>    http://www.socib.es/jwebchart/webncdump/?file={url},webncdump";
>>>    - viewer2 = "http://www.socib.es/jwebchart/?file={url},jwebchart";
>>>
>>> Viewers:
>>>
>>>    - NetCDF-Java ToolsUI 
>>> (webstart)<http://thredds.socib.es/thredds/view/ToolsUI.jnlp?catalog=http://thredds.socib.es/thredds/catalog/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/catalog.xml&dataset=mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc>
>>>    - 
>>> webncdump<http://www.socib.es/jwebchart/webncdump/?file=http://thredds.socib.es/thredds/dodsC/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc>
>>>    - 
>>> jwebchart<http://www.socib.es/jwebchart/?file=http://thredds.socib.es/thredds/dodsC/mooring/oceanographic_buoy/buoy_bahiadepalma-ime_buoy001/L1/dep0003_buoy-bahiadepalma_ime-buoy001_L1_latest.nc>
>>>
>>>
>> But, we have configured a Forecast Model Run (
>> http://thredds.socib.es/thredds/catalog/operational_models/oceanographical/hydrodynamics/model_run_aggregation/wmed/catalog.html?dataset=operational_models/oceanographical/hydrodynamics/model_run_aggregation/wmed/wmed_best.ncd)
>> Collection following the Feature Collection 
>> Tutorial<http://www.unidata.ucar.edu/projects/THREDDS/tech/tds4.2/tutorial/FeatureCollectionsTutorial.html>.
>> As you can see, the  "TimeCoverage", "GeospatialCoverage" and "Variables"
>> metadata is displayed.
>>
>>> Variables:
>>>
>>>    - *Vocabulary* [CF-1.0]:
>>>       - *dens* = *potential density* = sea_water_potential_density (kg
>>>       m-3)
>>>       - *salt* = *salinity* = sea_water_salinity
>>>       - *temp* = *potential temperature* =
>>>       sea_water_potential_temperature (Celsius)
>>>       - *u* = *u-momentum component* = eastward_sea_water_velocity
>>>       (meter second-1)
>>>       - *ubar* = *vertically integrated u-momentum component* =
>>>       barotropic_eastward_sea_water_velocity (meter second-1)
>>>       - *v* = *v-momentum component* = northward_sea_water_velocity
>>>       (meter second-1)
>>>       - *vbar* = *vertically integrated v-momentum component* =
>>>       barotropic_northward_sea_water_velocity (meter second-1)
>>>       - *zeta* = *free-surface* = sea_surface_height_above_sea_level
>>>       (meter)
>>>
>>> GeospatialCoverage:
>>>
>>>    - *Longitude: *-5.8 to 9.2 degrees_east
>>>    - *Latitude: *34.9 to 44.70621220623353 degrees_north
>>>
>>> TimeCoverage:
>>>
>>>    - *Start: *2012-03-06 00:00:00Z
>>>    - *End: *2012-03-10 00:00:00Z
>>>    - *Duration: *4.0 days
>>>
>>> So, I don't know why the metadata is displayed in the feature
>> collections and not in the other datasets.
>>
>> Thanks
>>
>> El 8 de marzo de 2012 14:02, Rich Signell <rsignell@xxxxxxxx> escribió:
>>
>> Kristian,
>>> Check out the NcISO service  -- I bet this can do what you want:
>>> http://www.ngdc.noaa.gov/eds/tds/
>>>
>>> -Rich
>>> 2012/3/8 Kristian Sebastián <ksebastian@xxxxxxxx>
>>>
>>>> Hi,
>>>>
>>>> I would like to add "Time coverage", "Geospatial coverage" and
>>>> "variables" metadata to our data sets.
>>>> I have looked for at the TDS documention, but I think isn't possible to
>>>> retrieve the metadata values from NetCDF file (global attributes like
>>>> time_coverage_start, time_coverage_start, ...). I exists, Could you tell 
>>>> me?
>>>>
>>>> Thanks
>>>>
>>>> --
>>>>
>>>>  Kristian Sebastian Blalid
>>>> SOS Division: Data Center Technical
>>>> Tel: 971439860 - Fax: 971439979
>>>> E-mail: kristian.sebastian@xxxxxxxx <sonia.gomara@xxxxxxxx> /
>>>> kristian.sebastian@xxxxxx <sonia.gomara@xxxxxx>
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>> thredds@xxxxxxxxxxxxxxxx
>>>> For list information or to unsubscribe,  visit:
>>>> http://www.unidata.ucar.edu/mailing_lists/
>>>>
>>>
>>>
>>>
>>> --
>>> Dr. Richard P. Signell   (508) 457-2229
>>> USGS, 384 Woods Hole Rd.
>>> Woods Hole, MA 02543-1598
>>>
>>>
>>
>>
>> --
>>
>>   Kristian Sebastian Blalid
>> SOS Division: Data Center Technical
>> Tel: 971439860 - Fax: 971439979
>> E-mail: kristian.sebastian@xxxxxxxx <sonia.gomara@xxxxxxxx> /
>> kristian.sebastian@xxxxxx <sonia.gomara@xxxxxx>
>>
>>
>>
>
>
> --
> Dr. Richard P. Signell   (508) 457-2229
> USGS, 384 Woods Hole Rd.
> Woods Hole, MA 02543-1598
>
>
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> thredds@xxxxxxxxxxxxxxxx
> For list information or to unsubscribe,  visit:
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>



-- 
Sincerely,

Bob Simons
IT Specialist
Environmental Research Division
NOAA Southwest Fisheries Science Center
1352 Lighthouse Ave
Pacific Grove, CA 93950-2079
Phone: (831)658-3205
Fax:   (831)648-8440
Email: bob.simons@xxxxxxxx

The contents of this message are mine personally and
do not necessarily reflect any position of the
Government or the National Oceanic and Atmospheric
Administration.
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