[gdal-dev] WCS driver

Ari Jolma ari.jolma at gmail.com
Mon Oct 23 08:31:58 PDT 2017

Peter Baumann kirjoitti 23.10.2017 klo 18:01:
> Hi all,
> splendid idea! Anybody who feels like working on WCS 2 support, feel free to
> contact me or my group for any sort of explanations sought (I am the spec writer
> of the coverages, admittedly). Note that the Coverage Implementation Schema
> (CIS) 1.1 is out.  Maybe this is a good starter:
> http://external.opengeospatial.org/twiki_public/CoveragesDWG/WebHome .

"universe of optional extensions"

sounds like a fun software development project :)

In short, how well do you see WCS 2 / the coverage model fits GDAL data 
model? It's not just raster anymore, right?

I guess the basic question is that do you think the existing WCS driver 
is not an appropriate starting point?

In any case I don't have at this point any real funding / time for this 
so I'd start incrementally and just reading the capabilities response 
for coverage list is enough. But, I see the importance.


>   I' be
> most happy to see GDAL WCS2-enabled!
> cheers,
> Peter
> On 10/23/2017 12:19 PM, Even Rouault wrote:
>> Hi Ari,
>>> It seems to me that the WCS driver could benefit from some love.
>> That would be a good initiative!
>> In the wished feature list, I could add:
>> * improve test coverage, which is really low currently:
>> https://rawgit.com/rouault/gdalautotest-coverage-results/master/coverage_html/frmts/wcs/wcsdataset.cpp.gcov.html
>> One issue we have for testing is the lack of stable & reliable servers.
>> One potential way of addressing this is to use a local HTTP server, like I did recently with the /vsis3/ (and similar)
>> subsystems, where you can add stub endpoints. An extra advantage is that you can also easily test error situations.
>> See
>> - example of server start and end
>> 	https://trac.osgeo.org/gdal/browser/trunk/autotest/gcore/vsis3.py#L126
>>        https://trac.osgeo.org/gdal/browser/trunk/autotest/gcore/vsis3.py#L1906
>> - example of installation of HTTP answers to expected requests:
>>         https://trac.osgeo.org/gdal/browser/trunk/autotest/gcore/vsis3.py#L1258
>> * WCS 2.0 support
>> Even

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