[gdal-dev] Attempting to access an ArcGIS REST API through a WMS format minidriver

Wed Jul 8 04:51:47 PDT 2015

Hi James,

As the server didn't provide information about levels, some help needed 
to calculate this values. Also the all layers switched off, so we need 
to tell which layers should be shown.
I create such xml file based on information from here: 
https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer?f=json&pretty=true

  <GDAL_WMS>
     <Service name="AGS">
<ServerUrl>https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer</ServerUrl>
         <ImageFormat>png</ImageFormat>
         <Layers>show:1,2,3</Layers>
         <BBoxOrder>xyXY</BBoxOrder>
         <SRS>3857</SRS>
     </Service>
     <DataWindow>
         <UpperLeftX>-1821098.1612395868</UpperLeftX>
         <UpperLeftY>9441422.428028269</UpperLeftY>
         <LowerRightX>1157719.0542395862</LowerRightX>
         <LowerRightY>6462605.212549096</LowerRightY>
         <SizeX>1024</SizeX>
         <SizeY>1024</SizeY>
     </DataWindow>
</GDAL_WMS>

$ gdal_translate -of PNG ~/tmp/ags.xml ~/tmp/ags_test.png --config 
CPL_DEBUG ON
GDAL: GDALOpen(/home/bishop/tmp/ags.xml, this=0x15138c0) succeeds as WMS.
Input file size is 512, 512
AGS: URL = 
https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer/export?f=image&bbox=-1821098.16123959,6462605.21254910,1157719.05423959,9441422.42802827&size=512,512&dpi=&imageSR=3857&bboxSR=3857&format=png&layerdefs=&layers=show:1,2,3&transparent=false&time=&layerTimeOptions=&dynamicLayers=

HTTP: Requesting [1/1] 
https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer/export?f=image&bbox=-1821098.16123959,6462605.21254910,1157719.05423959,9441422.42802827&size=512,512&dpi=&imageSR=3857&bboxSR=3857&format=png&layerdefs=&layers=show:1,2,3&transparent=false&time=&layerTimeOptions=&dynamicLayers=
HTTP: Request [0] 
https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer/export?f=image&bbox=-1821098.16123959,6462605.21254910,1157719.05423959,9441422.42802827&size=512,512&dpi=&imageSR=3857&bboxSR=3857&format=png&layerdefs=&layers=show:1,2,3&transparent=false&time=&layerTimeOptions=&dynamicLayers= 
: status = 200, content type = image/png, error = (null)
GDAL: GDALOpen(/vsimem/wms/0x15dc720/wmsresult.dat, this=0x15c3d00) 
succeeds as PNG.
GDAL: GDALClose(/vsimem/wms/0x15dc720/wmsresult.dat, this=0x15c3d00)
0...10...20...30...40...50...60...70...80...90...100 - done.
GDAL: GDALClose(/home/bishop/tmp/ags_test.png, this=0x1599830)
GDAL: GDALClose(/home/bishop/tmp/ags.xml, this=0x15138c0)

Also I test this xml in QGIS - works fine.

Best regards,
     Dmitry

07.07.2015 18:42, Passmore, James H. пишет:
> >Fromhttp://www.gdal.org/frmt_wms.html   I see you can access an ArcGIS REST API like:
>
> gdalinfo"http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer?f=json&pretty=true"
>
> and
>
> gdal_translate"http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer?f=json"  wms.xml -of WMS
>
> These above examples work for me.
>
> When I try on a BGS service it fails as below:
>
> ...:\>gdalinfo"https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer?f=json&pretty=true"
> gdalinfo failed - unable to open 'https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer?f=json&pretty=
> true'.
>
> And:
>
> ..:\>gdal_translate"https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer?f=json&pretty=true"  bgs.xml -of WMS --debug ON
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_BAG.dll using GDALRegister_BAG.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_ECW_JP2ECW.dll using GDALRegister_ECW_JP2ECW.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_FITS.dll using GDALRegister_FITS.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_GMT.dll using GDALRegister_GMT.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_HDF4.dll using GDALRegister_HDF4.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_HDF4Image.dll using GDALRegister_HDF4Image.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_HDF5.dll using GDALRegister_HDF5.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_HDF5Image.dll using GDALRegister_HDF5Image.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_KEA.dll using GDALRegister_KEA.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_MG4Lidar.dll using GDALRegister_MG4Lidar.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_MrSID.dll using GDALRegister_MrSID.
> GDAL: Auto register C:\apps\gisinternals\bin\gdaL\plugins\gdal_netCDF.dll using GDALRegister_netCDF.
> HTTP: Fetch(https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer?f=json&pretty=true)
> WMS: Did not get levels
> HTTP: Fetch(https://map.bgs.ac.uk/arcgis/rest/services/UKSO/UKSO_BGS/MapServer?f=json&pretty=true)
> GDALOpen failed - 0
>
> Is the reason that HTTPS is not supported here at all, or if not what might be wrong with the service/request/ configuration?
>
> Thanks
>
> James
>
>
>
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