Re: [thredds] Providing data access to GIS users

I'm out of the office for a couple weeks, but I'll look into it more when I get 
back. I was able to get my sample to someone at ESRI and they've opened a bug 
report to look into it.

On Mar 22, 2011, at 10:08 AM, Ethan Davis wrote:

> Hi Kyle,
> Thanks for the update. Sounds promising.
> All, thanks for filling in the blanks.
> Jay, let me know if you are still having trouble with your TDS.
> Ethan
> On 3/22/2011 10:20 AM, Kyle Shannon wrote:
>> I am fairly certain that the y-flip issue is fixed in gdal, and it also
>> handles all of the grid_mapping values/projections in cf-1.4.  Arc uses
>> GDAL-1.6 right now, but I believe that they will make the jump to 1.8.x
>> where these issues have been implemented. 
>> # ============================
>> Kyle Shannon
>> Physical Science Technician
>> RMRS Fire Sciences Lab
>> Fire, Fuels & Smoke - RWU 4405
>> 5775 Highway 10 W.
>> Missoula, MT 59808
>> (406)829-6954
>> kshannon@xxxxxxxxx <mailto:kshannon@xxxxxxxxx>
>> # ============================
>> On Tue, Mar 22, 2011 at 08:29, Roy Mendelssohn <Roy.Mendelssohn@xxxxxxxx
>> <mailto:Roy.Mendelssohn@xxxxxxxx>> wrote:
>>    ArcGIS and Mapserver both make heavy use of GDAL, and the fact that
>>    they work together is probably more a reflection of the shared code
>>    base than that they necessarily do something correctly.  While GDAL
>>    is a great library,  I have had similar problems in how it handles
>>    OPeNDAP and netCDF files  (it flips the images), in cases where the
>>    grids etc were clearly specified in CF conventions - they were just
>>    being ignored and GDAL was imposing its own interpretations.
>>    The question is not whether ArcGIS works with MapServer, but whether
>>    the WCS service implemented in THREDDS correctly follows the
>>    standard, and  provides enough information for a client to interpret
>>    what it receives correctly. If the answer is yes, then we should be
>>    talking to ESRI et al. about implementing their client correctly to
>>    follow the standard.  The equivalent would be saying I should change
>>    my CF compliant netCDF files to suit GDAL, rather than have GDAL
>>    learn the standard.
>>    My $0.02.
>>    -Roy
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Jay Alder
Graduate Student
Wilkinson Hall 105