[Tilecache] help with gdal-wms-c driver
Richard Duivenvoorde
rdmailings at duif.net
Thu Jun 26 03:29:35 EDT 2008
Hi Matthew,
thanks, but I think I have exact the same resolutions array both in
config and in OL? See source of
http://www.duif.net/osm/wmsc.html
I've tried quite some options/configurations, but hope to find somebody
who can explain why stuff isn't working. But maybe with the help of your
configurations, and maybe some hints from others, I will be successful also.
Regards
Richard Duivenvoorde
Matthew Bartolome wrote:
> Hi Richard,
> Try setting your resolutions array parameter in openlayers to the
> list/array you are seeing in the error message. In my configuration I
> have matching bounding box and resolutions. I'm also setting the map
> projection in openlayers and tilecache to what my datum is.
>
> I don't have my configs in front of me but if you still have problems I
> can help you sort it out and give you my example tomorrow.
>
> On Jun 25, 2008, at 3:09 PM, Richard Duivenvoorde wrote:
>
>> Hi List,
>> after reading
>> http://crschmidt.net/blog/282/openaerialmap-using-with-other-tools/
>> and
>> http://wiki.openaerialmap.org/Using_With_MapServer
>>
>> I thought it would be nice to be able to have a wms-interface in front
>> of 'our' dutch openstreetmap development server
>> http://tile.openstreetmap.nl/
>>
>> But failing to accomplish this (I thought because of the 'strange'
>> resolutions/scales), I seeded my own tilecache with very simple scales
>> and bboxes:
>> http://www.duif.net/osmtilecache/tilecache2.py/1.0.0/osmpostgis2/
>> and an OpenLayers-test with a TMS layer in front:
>> http://www.duif.net/osm/wmsct.html
>> getting tiles from the above mentioned tilecache.
>>
>> But the main-goal was to be able to put a wms in front of it:
>>
>> <GDAL_WMS>
>> <Service name="WMS">
>> <Version>1.1.1</Version>
>> <ServerUrl>http://www.duif.net/osmtilecache/tilecache2.py/</ServerUrl>
>> <Layers>osmpostgis2</Layers>
>> <SRS>EPSG:28992</SRS>
>> </Service>
>> <DataWindow>
>> <UpperLeftX>0</UpperLeftX>
>> <UpperLeftY>600000</UpperLeftY>
>> <LowerRightX>300000</LowerRightX>
>> <LowerRightY>300000</LowerRightY>
>> <SizeX>524288</SizeX> <!-- ??? -->
>> <SizeY>524288</SizeY>
>> <TileLevel>11</TileLevel>
>> </DataWindow>
>> <Projection>EPSG:28992</Projection>
>> <!--<OverviewCount>12</OverviewCount>-->
>> <BlockSizeX>256</BlockSizeX>
>> <BlockSizeY>256</BlockSizeY>
>> <BandsCount>3</BandsCount>
>> </GDAL_WMS>
>>
>> and a layer in a wms:
>>
>> LAYER
>> name "osmnl"
>> METADATA
>> "wms_title" "osmnl"
>> "wms_srs" "epsg:28992"
>> END
>> type raster
>> status default
>> data "/usr/lib/cgi-bin/osmpostgis2_cache.xml"
>> projection "init=epsg:28992" end
>> #offsite 0 0 0
>> END
>>
>> and an openlayer demo page:
>> http://www.duif.net/osm/wmsc.html
>>
>> But I keep failing in getting this to work. I'm not able to build a
>> configuration that requests the right tiles to tilecache. All request
>> from mapserver to the tilecache give errors like:
>>
>> An error occurred: can't find resolution index for 1171.875000.
>> Available resolutions are:
>> [2048.0, 1024.0, 512.0, 256.0, 128.0, 64.0, 32.0, 16.0, 8.0, 4.0, 2.0]
>>
>> Can somebody help me to explain HOW openlayers comes to url's like:
>> http://www.duif.net/cgi-bin/mapserv?map=osmpostgis2.map&TYPE=jpeg&LAYERS=osmnl&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&FORMAT=image%2Fjpeg&SRS=EPSG%3A28992&BBOX=0,300000,524288,824288&WIDTH=256&HEIGHT=256
>>
>> giving rise to:
>> http://www.duif.net/osmtilecache/tilecache2.py/?request=GetMap&version=1.1.1&layers=osmpostgis2&styles=&srs=EPSG:28992&format=image/jpeg&width=256&height=256&bbox=0.00000000,300000.00000000,300000.00000000,600000.00000000
>>
>> etc etc
>>
>> gdal info output from the xml:
>>
>> Driver: WMS/OGC Web Map Service
>> Files: /usr/lib/cgi-bin/osmpostgis2_cache.xml
>> Size is 524288, 524288
>> Coordinate System is:
>> PROJCS["Amersfoort / RD New",
>> GEOGCS["Amersfoort",
>> DATUM["Amersfoort",
>> SPHEROID["Bessel 1841",6377397.155,299.1528128,
>> AUTHORITY["EPSG","7004"]],
>> AUTHORITY["EPSG","6289"]],
>> PRIMEM["Greenwich",0,
>> AUTHORITY["EPSG","8901"]],
>> UNIT["degree",0.01745329251994328,
>> AUTHORITY["EPSG","9122"]],
>> AUTHORITY["EPSG","4289"]],
>> UNIT["metre",1,
>> AUTHORITY["EPSG","9001"]],
>> PROJECTION["Oblique_Stereographic"],
>> PARAMETER["latitude_of_origin",52.15616055555555],
>> PARAMETER["central_meridian",5.38763888888889],
>> PARAMETER["scale_factor",0.9999079],
>> PARAMETER["false_easting",155000],
>> PARAMETER["false_northing",463000],
>> AUTHORITY["EPSG","28992"]]
>> Origin = (0.000000000000000,600000.000000000000000)
>> Pixel Size = (0.572204589843750,-0.572204589843750)
>> Corner Coordinates:
>> Upper Left ( 0.000, 600000.000) ( 3d 3'31.41"E, 53d21'53.77"N)
>> Lower Left ( 0.000, 300000.000) ( 3d11'41.21"E, 50d40'12.02"N)
>> Upper Right ( 300000.000, 600000.000) ( 7d33'59.07"E, 53d22'3.89"N)
>> Lower Right ( 300000.000, 300000.000) ( 7d26'20.80"E, 50d40'21.39"N)
>> Center ( 150000.000, 450000.000) ( 5d18'53.12"E, 52d 2'21.41"N)
>> Band 1 Block=256x256 Type=Byte, ColorInterp=Undefined
>> Overviews: 262144x262144, 131072x131072, 65536x65536, 32768x32768,
>> 16384x16384, 8192x8192, 4096x4096, 2048x2048, 1024x1024, 512x512, 256x256
>> Band 2 Block=256x256 Type=Byte, ColorInterp=Undefined
>> Overviews: 262144x262144, 131072x131072, 65536x65536, 32768x32768,
>> 16384x16384, 8192x8192, 4096x4096, 2048x2048, 1024x1024, 512x512, 256x256
>> Band 3 Block=256x256 Type=Byte, ColorInterp=Undefined
>> Overviews: 262144x262144, 131072x131072, 65536x65536, 32768x32768,
>> 16384x16384, 8192x8192, 4096x4096, 2048x2048, 1024x1024, 512x512, 256x256
>>
>> Any help VERY much appreciated,
>>
>> Regards,
>>
>> Richard Duivenvoorde
>>
>>
>>
>>
>>
>>
>>
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>> http://openlayers.org/mailman/listinfo/tilecache
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