I ran the response through the validator at
http://www.validome.org/xml/validate/. Validation fails because it
cannot load the referenced schema "../wcsDescribeCoverage.xsd", which, I
can confirm, does not exist at the specified URL.
I assume that the missing schema is a standard one, but I am not sure
why the server would not just refer to a canonical version somewhere,
instead of (not) providing its own copy.
Thanks,
Chris
On 05/26/2014 10:36 AM, Bart van den Eijnden wrote:
Have you run the ArcGIS response through an XML validator?
Can you share the full response including all the (non-public) schemas
it references?
Best regards,
Bart
--
Bart van den Eijnden
Front-end Developer | Boundless
@boundlessgeo
On 26 May 2014, at 10:32, Bart van den Eijnden
<bart...@boundlessgeo.com <mailto:bart...@boundlessgeo.com>> wrote:
Hey Chris,
the way to verify who is right is to look at the schema, so:
http://schemas.opengis.net/wcs/1.1/wcsDescribeCoverage.xsd
it defines:
xmlns:ows="http://www.opengis.net/ows/1.1”
so this is the correct namespace URI to use.
Best regards,
Bart
--
Bart van den Eijnden
Front-end Developer | Boundless
@boundlessgeo
On 26 May 2014, at 10:30, Christopher Eykamp
<christopher.eyk...@tudor.lu <mailto:christopher.eyk...@tudor.lu>> wrote:
Hi Tim,
Thanks for the reply. I am less familiar with the standards than
you are, so can you tell me how one can determine that the second
schema is for WCS 1.1.0, and not the first? From the names, I would
conclude that the first is correct, and that the second is... also
correct?
In any event, I will need to find a way to parse this document (I
don't control the server, and our partner who does is probably
unable to resolve things on their end). I will look into Bart's
suggestion to see if that offers a way forward.
Thanks!
Chris
On 05/23/2014 06:25 PM, Timothy Astle wrote:
I believe you've hit an oddity in the WCS schemas.
Look at this one:
http://schemas.opengis.net/wcs/1.1.0/wcsDescribeCoverage.xsd
Now look at this one:
http://schemas.opengis.net/wcs/1.1/wcsDescribeCoverage.xsd
Do you see a difference in the ows namespace? From what I recall,
the second one is correct. A few years ago I was in a similar
situation. I'm thinking ArcGIS Servermight be generating XML using
the wrong schemas.
So I believe OL is correct and the "problem" is with ArcGIS Server,
leading from the OGC schema confusion. I'd love to know the
history behind it.
Do you have control over the ArcGIS Server instance? It could be
something you want to bring up with ESRI.
Cheers,
Tim
On 23/05/2014 12:19 PM, Christopher Eykamp wrote:
Hello,
I am getting the attached response from an ArcGIS WCS server, with
request DescribeCoverage and protocol version 1.1.0. OpenLayers
(latest 1.x from GitHub) cannot retrieve the Title or Abstract
attributes because the namespaces referenced in the
OpenLayers.Format.WCSDescribeCoverage.v1_1_0 object conflict with
what is referenced in the document.
Specifically, the OpenLayers namespaces object includes this line:
ows: "http://www.opengis.net/ows/1.1";
This in turn is used to generate a namespaceAlias lookup, which
will return "ows" when looking up
"http://www.opengis.net/ows/1.1";. However, in this case, I need
"ows" to be mapped to "http://www.opengis.net/ows";. If I make that
change in the namespaces definition, tests break. Unfortunately,
given the way the aliases are defined, I cannot add a second
namespace that maps to "ows", which might fix my problem.
I am unsure how to proceed. I can't tell if I am encountering a
misbehaving server, or if this is just a limitation of the way
OpenLayers is architected (hard-coded namespaces that can only
have one namespace map to a given alias). Or have I misunderstood
something at a more fundamental level?
Thanks for your advice!
Chris
<CoverageDescriptions xmlns="http://www.opengis.net/wcs/1.1";
xmlns:ows="http://www.opengis.net/ows";
xmlns:owcs="http://www.opengis.net/wcs/1.1/ows";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:gml="http://www.opengis.net/gml";
xsi:schemaLocation="http://www.opengis.net/wcs/1.1
../wcsDescribeCoverage.xsd http://www.opengis.net/wcs/1.1/ows
../owsDataIdentification.xsd"><CoverageDescription><ows:Title>OSDATA.OS_25K_RASTER_1</ows:Title><ows:Abstract/><Identifier>1</Identifier><Domain><SpatialDomain><ows:BoundingBox
crs="urn:ogc:def:crs:OGC::imageCRS"
dimension="2"><ows:LowerCorner>0
0</ows:LowerCorner><ows:UpperCorner>16273
8848</ows:UpperCorner></ows:BoundingBox><ows:BoundingBox
crs="urn:ogc:def:crs:EPSG::4326"><ows:LowerCorner>-2.4975225300277217
57.00034657412791</ows:LowerCorner><ows:UpperCorner>-2.0000237693585987
57.270861907368726</ows:UpperCorner></ows:BoundingBox><GridCRS><GridBaseCRS>urn:ogc:def:crs:EPSG::4326</GridBaseCRS><GridOrigin>-2.4975072449484337
57.27084662228944</GridOrigin><GridOffsets>3.057015857620272e-005
-3.0570158576202496e-005</GridOffsets></GridCRS></SpatialDomain></Domain><Range><Field><Title>Field_1</Title><Abstract>Field_1</Abstract><Identifier>Field_1</Identifier><Definition><owcs:AnyValue/></Definition><NullValue>256</NullValue><NullValue>256</NullValue><NullValue>256</NullValue><owcs:InterpolationMethods><owcs:DefaultMethod>nearest</owcs:DefaultMethod><owcs:OtherMethod>bilinear</owcs:OtherMethod><owcs:OtherMethod>bicubic</owcs:OtherMethod></owcs:InterpolationMethods><Axis
identifier="BAND"><AvailableKeys><Key>1</Key><Key>2</Key><Key>3</Key></AvailableKeys><owcs:DataType>Byte</owcs:DataType></Axis></Field></Range><SupportedCRS>urn:ogc:def:crs:EPSG::4326</SupportedCRS><SupportedCRS>urn:ogc:def:crs:EPSG::4326</SupportedCRS><SupportedFormat>image/GeoTIFF</SupportedFormat><SupportedFormat>image/NITF</SupportedFormat><SupportedFormat>image/HDF</SupportedFormat><SupportedFormat>image/PNG</SupportedFormat></CoverageDescription></CoverageDescriptions>
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