[gdal-dev] WCS driver, GetSubdatasets (Python) returns empty list

[Peter Baumann]

Hi list,

on that occasion it may be noteworthy that OGC is about to publish a Request for 
Comments (RFC) on the
     10-140 OGC Web Coverage Service - Earth Observation Application Profile
nicknamed EO-WCS. This specification, which has been tasked by ESA, specializes 
WCS for use in remote sensing.

An open source reference implementation of EO-WCS is available with EOxServer, 
see www.eoxserver.org. Among other features, it provides a tight integration 
with MapServer and GDAL.

Thought this might be of interest to the list.

-Peter


On 06/26/2011 12:25 AM, Even Rouault wrote:
> Le dimanche 26 juin 2011 00:03:55, Jachym Cepicky a écrit :
>> Hi,
>>
>> using Python, gdal 1.8.0, Ubuntu
>>
>> I need to access some Temporal information about available WCS layer
> Jachym,
>
> Frank has added support for WCS temporal information in GDAL trunk just a few
> days ago. So it is not available in GDAL 1.8.0 (I've just updated the doc to
> mention that)
>
> With a GDAL build from trunk, gdalinfo shows this :
>
> Driver: WCS/OGC Web Coverage Service
> Files: time.xml
> Size is 645, 585
> Coordinate System is:
> PROJCS["GGRS87 / Greek Grid",
>      GEOGCS["GGRS87",
>          DATUM["Greek_Geodetic_Reference_System_1987",
>              SPHEROID["GRS 1980",6378137,298.257222101,
>                  AUTHORITY["EPSG","7019"]],
>              TOWGS84[-199.87,74.79,246.62,0,0,0,0],
>              AUTHORITY["EPSG","6121"]],
>          PRIMEM["Greenwich",0,
>              AUTHORITY["EPSG","8901"]],
>          UNIT["degree",0.0174532925199433,
>              AUTHORITY["EPSG","9122"]],
>          AUTHORITY["EPSG","4121"]],
>      UNIT["metre",1,
>          AUTHORITY["EPSG","9001"]],
>      PROJECTION["Transverse_Mercator"],
>      PARAMETER["latitude_of_origin",0],
>      PARAMETER["central_meridian",24],
>      PARAMETER["scale_factor",0.9996],
>      PARAMETER["false_easting",500000],
>      PARAMETER["false_northing",0],
>      AUTHORITY["EPSG","2100"],
>      AXIS["Easting",EAST],
>      AXIS["Northing",NORTH]]
> Origin = (409900.000000000000000,4503200.000000000000000)
> Pixel Size = (20.000000000000000,-20.000000000000000)
> Metadata:
>    TIME_POSITION=2010-10-17T04:00:00.000Z
> Subdatasets:
>    SUBDATASET_1_NAME=WCS_SDS:time="2010-10-17T00:00:00.000Z",time.xml
>    SUBDATASET_1_DESC=Coverage 20101012T210222_pig at time
> 2010-10-17T00:00:00.000Z
>    SUBDATASET_2_NAME=WCS_SDS:time="2010-10-17T01:00:00.000Z",time.xml
>    SUBDATASET_2_DESC=Coverage 20101012T210222_pig at time
> 2010-10-17T01:00:00.000Z
>    SUBDATASET_3_NAME=WCS_SDS:time="2010-10-17T02:00:00.000Z",time.xml
>    SUBDATASET_3_DESC=Coverage 20101012T210222_pig at time
> 2010-10-17T02:00:00.000Z
>    SUBDATASET_4_NAME=WCS_SDS:time="2010-10-17T03:00:00.000Z",time.xml
>    SUBDATASET_4_DESC=Coverage 20101012T210222_pig at time
> 2010-10-17T03:00:00.000Z
>    SUBDATASET_5_NAME=WCS_SDS:time="2010-10-17T04:00:00.000Z",time.xml
>    SUBDATASET_5_DESC=Coverage 20101012T210222_pig at time
> 2010-10-17T04:00:00.000Z
> Corner Coordinates:
> Upper Left  (  409900.000, 4503200.000) ( 22d56' 2.07"E, 40d40'29.14"N)
> Lower Left  (  409900.000, 4491500.000) ( 22d56' 8.10"E, 40d34' 9.76"N)
> Upper Right (  422800.000, 4503200.000) ( 23d 5'11.49"E, 40d40'33.86"N)
> Lower Right (  422800.000, 4491500.000) ( 23d 5'16.66"E, 40d34'14.45"N)
> Center      (  416350.000, 4497350.000) ( 23d 0'39.58"E, 40d37'21.89"N)
> Band 1 Block=645x585 Type=Float64, ColorInterp=Undefined
>
> So your best luck is to checkout svn trunk and build by yourself ;-)
>
> Best regards,
>
> Even
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-- 
Dr. Peter Baumann
  - Professor of Computer Science, Jacobs University Bremen
    www.faculty.jacobs-university.de/pbaumann
    mail: p.baumann at jacobs-university.de
    tel: +49-421-200-3178, fax: +49-421-200-493178
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