[gdal-dev] Open Aerial Map Access via C#

[Marcelo Oliveira]

Tamas,

 

Here is how I specified the source when opening the dataset:

 

<<<< 

       String filename = "http://openaerialmap.org/static/ww.xml";

       Gdal.AllRegister();

       Dataset  dataSet = Gdal.OpenShared(fileName, 0); 

>>>>> 

 

Thanks, M

 

--------------

Marcelo Simas Oliveira

GeoStats LP

530 Means St., Ste. 310

Atlanta, Georgia 30318

(404) 588-1004

www.geostats.com

 

From: Tamas Szekeres [mailto:szekerest at gmail.com] 
Sent: Monday, January 26, 2009 10:36 AM
To: Marcelo Oliveira
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] Open Aerial Map Access via C#

 

I just wanted to know how did you specify the <GDAL_WMS> service description XML when opening the dataset. Because the error you mentioned sounds like you have an invalid Projection tag in this file.

Best regards,

Tamas



2009/1/26 Marcelo Oliveira <moliveira at geostats.com>

Here is what the URL returns:

 

<<<< 

<LayerSet Name="OAM" ShowAtStartup="true" ShowOnlyOneLayers="false">

−

<ChildLayerSet Name="openaerialmap" ShowAtStartup="false" ShowOnlyOneLayer="true">

−

<QuadTileSet ShowAtStartup="true">

<Name>openaerialmap</Name>

<Description>OpenAerialMap data.</Description>

<DistanceAboveSurface>0</DistanceAboveSurface>

−

<BoundingBox>

−

<West>

<Value>-180.0</Value>

</West>

−

<South>

<Value>-90.0</Value>

</South>

−

<East>

<Value>180.0</Value>

</East>

−

<North>

<Value>90.0</Value>

</North>

</BoundingBox>

<TerrainMapped>false</TerrainMapped>

−

<ImageAccessor>

<LevelZeroTileSizeDegrees>180.0</LevelZeroTileSizeDegrees>

<NumberLevels>20</NumberLevels>

<TextureSizePixels>256</TextureSizePixels>

<ImageFileExtension>jpeg</ImageFileExtension>

−

<ImageTileService>

<ServerUrl>http://tile.openaerialmap.org/tiles/</ServerUrl>

<DataSetName>openaerialmap</DataSetName>

</ImageTileService>

</ImageAccessor>

−

<ExtendedInformation>

<Abstract>SRS:EPSG:4326</Abstract>

</ExtendedInformation>

</QuadTileSet>

</ChildLayerSet>

</LayerSet>

>>>> 

 

--------------

Marcelo Simas Oliveira

GeoStats LP

530 Means St., Ste. 310

Atlanta, Georgia 30318

(404) 588-1004

www.geostats.com

 

From: Tamas Szekeres [mailto:szekerest at gmail.com] 
Sent: Monday, January 26, 2009 10:24 AM
To: Marcelo Oliveira
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] Open Aerial Map Access via C#

 

Marcelo,

How is your <GDAL_WMS>.. service configuration looking like?

Best regards,

Tamas




2009/1/26 Marcelo Oliveira <moliveira at geostats.com>

Hi There,

I am using the GDAL build that comes with FWTools2.2.6 (GDAL 1.6.0dev)
to try to open OAM ("http://openaerialmap.org/static/ww.xml") using the
C# bindings for GDAL and it throws the following exception:

<<<<
GDALWMS: Bad projection specified.
>>>>

The source code that causes the exception to be thrown is :

<<<<
       String filename = "http://openaerialmap.org/static/ww.xml";
       Gdal.AllRegister();
       Dataset  dataSet = Gdal.OpenShared(fileName, 0); <----
>>>>>

However,  I can open and extract pieces of this dataset using gdalinfo
and gdal_translate via the command line.  Is this a know limitation of
the C# bindings or am I doing something wrong?

Thanks, M

--------------
Marcelo Simas Oliveira
GeoStats LP
530 Means St., Ste. 310
Atlanta, Georgia 30318
(404) 588-1004
www.geostats.com

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