[thredds] geospaticalCoverage metadata information

Roland Schweitzer Roland.Schweitzer at noaa.gov
Tue Mar 11 15:31:47 MDT 2008


Ethan Davis wrote:
> Hi Roland,
>
> I haven't been able to reproduce this yet but I've been working with 
> our 4.0 code, oops. I'll switch over to our 3.16 code. In the mean 
> time, can you send me your config catalog so I can make sure I'm 
> breaking things properly?
>
> Thanks,
>
> Ethan
The catalog is attached.  You can get copies of the files from 
ftp://ftp.cdc.noaa.gov/Datasets/ncep.reanalysis/surface.

As it says in the catalog, the descriptions and hierarchy are totally 
made up, but the geo-spatial metadata should match what's in the file.

Roland
>
> Roland Schweitzer wrote:
>> Hi,
>>
>> I have a sequence of netCDF files with lat/lon defined as:
>>
>> float lat(lat) ;
>>                 lat:units = "degrees_north" ;
>>                 lat:actual_range = 90.f, -90.f ;
>>                 lat:long_name = "Latitude" ;
>>         float lon(lon) ;
>>                 lon:units = "degrees_east" ;
>>                 lon:long_name = "Longitude" ;
>>                 lon:actual_range = 0.f, 357.5f ;
>>
>> ...
>>
>> data:
>>
>>  lat = 90, 87.5, 85, 82.5, 80, 77.5, 75, 72.5, 70, 67.5, 65, 62.5, 
>> 60, 57.5,
>>     55, 52.5, 50, 47.5, 45, 42.5, 40, 37.5, 35, 32.5, 30, 27.5, 25, 
>> 22.5, 20,
>>     17.5, 15, 12.5, 10, 7.5, 5, 2.5, 0, -2.5, -5, -7.5, -10, -12.5, -15,
>>     -17.5, -20, -22.5, -25, -27.5, -30, -32.5, -35, -37.5, -40, 
>> -42.5, -45,
>>     -47.5, -50, -52.5, -55, -57.5, -60, -62.5, -65, -67.5, -70, 
>> -72.5, -75,
>>     -77.5, -80, -82.5, -85, -87.5, -90 ;
>>
>>  lon = 0, 2.5, 5, 7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 27.5, 30, 
>> 32.5, 35,
>>     37.5, 40, 42.5, 45, 47.5, 50, 52.5, 55, 57.5, 60, 62.5, 65, 67.5, 
>> 70,
>>     72.5, 75, 77.5, 80, 82.5, 85, 87.5, 90, 92.5, 95, 97.5, 100, 
>> 102.5, 105,
>>     107.5, 110, 112.5, 115, 117.5, 120, 122.5, 125, 127.5, 130, 
>> 132.5, 135,
>>     137.5, 140, 142.5, 145, 147.5, 150, 152.5, 155, 157.5, 160, 
>> 162.5, 165,
>>     167.5, 170, 172.5, 175, 177.5, 180, 182.5, 185, 187.5, 190, 
>> 192.5, 195,
>>     197.5, 200, 202.5, 205, 207.5, 210, 212.5, 215, 217.5, 220, 
>> 222.5, 225,
>>     227.5, 230, 232.5, 235, 237.5, 240, 242.5, 245, 247.5, 250, 
>> 252.5, 255,
>>     257.5, 260, 262.5, 265, 267.5, 270, 272.5, 275, 277.5, 280, 
>> 282.5, 285,
>>     287.5, 290, 292.5, 295, 297.5, 300, 302.5, 305, 307.5, 310, 
>> 312.5, 315,
>>     317.5, 320, 322.5, 325, 327.5, 330, 332.5, 335, 337.5, 340, 
>> 342.5, 345,
>>     347.5, 350, 352.5, 355, 357.5 ;
>>
>> I create an aggregation with these files and include the following in 
>> a <metadata> element.
>>
>> <geospatialCoverage>
>>                                                 <northsouth>
>>                                                         
>> <start>-90</start>
>>                                                         <size>73</size>
>>                                                         
>> <resolution>2.5</resolution>
>>                                                         
>> <units>degrees_north</units>
>>                                                 </northsouth>
>>                                                 <eastwest>
>>                                                         <start>0</start>
>>                                                         <size>144</size>
>>                                                         
>> <resolution>2.5</resolution>
>>                                                         
>> <units>degrees_east</units>
>>                                                 </eastwest>
>>  </geospatialCoverage>
>>
>> When I look at the HTML of the THREDDS catalog using TDS 
>> (Implementation-Version: 3.16.32) I get this:
>>
>>
>>       GeospatialCoverage:
>>
>>     * / Longitude: / 0.0 to 144.0 Resolution=2.5 degrees_east
>>     * / Latitude: / -90.0 to -17.0 Resolution=2.5 degrees_north
>>
>> Have I misinterpreted the documentation, is this a bug in TDS, or what?
>>
>> Thanks,
>> Roland
>>
>>
>> ------------------------------------------------------------------------
>>
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