[wfs-dev] SRS of LatLongBoundingBox

[Jeff Fitzgerald]

Hey David,

I had the same confusion you did regarding the wording, especially having
come from the WMS spec that has a <LatLonBoundingBox> element and a
<BoundingBox> with an SRS attribute. Maybe this could be clarified in future
specs.

Also, I'd been interested to know how you make out with the tests. My WFS
generates the capabilities and schema documents on-the-fly on a request by
request basis. There were enough discrepancies in the response documents due
to namespaces and what not that some of the test were difficult to resolve.

Cheers,

Fitz

----- Original Message -----
From: "David McCullough" <dmccullough at questerra.com>
To: "Wfs-Dev (E-mail)" <wfs-dev at opengis.org>
Sent: Tuesday, August 31, 2004 11:18 PM
Subject: RE: [wfs-dev] SRS of LatLongBoundingBox


> Alex,
>
> Yeah, I have my server coded up to return EPSG:4326 (even though our
> features are in a projected coordinate system). However, what got me
> questioning things again was looking at the GetCapabilities response in
> the WfsCapabilities.xml file that is included wfsTestData1.0.0.zip test
> data from OGC CITE. This test file has XML like this:
>
> ...
>       <wfs:SRS>EPSG:32615</wfs:SRS>
>       <wfs:LatLongBoundingBox minx="500000" miny="500000" maxx="501000"
> maxy="501000"/>
> ...
>
> Clearly, these coordinates are not lat/long degree values, so is this
> sample data incorrect?
>
> Thanks.
>
> -----Original Message-----
> From: Aleksandar Milanovic [mailto:risjak at telus.net]
> Sent: Tuesday, August 31, 2004 6:45 PM
> To: David McCullough; 'Wfs-Dev (E-mail)'
> Subject: RE: [wfs-dev] SRS of LatLongBoundingBox
>
>
> Hi Dave,
>
> LatLongBoundingBox coordinates are *not* bound to the SRS of the feature
> type declared in the Capabilities document. Rather, they are in
> EPSG:4326
> with decimal degrees as units, if I remember well :).
>
> Cheers,
> Alex
>
> -----Original Message-----
> From: wfs-dev-bounces at opengis.org [mailto:wfs-dev-bounces at opengis.org]
> On
> Behalf Of David McCullough
> Sent: August 31, 2004 5:59 PM
> To: Wfs-Dev (E-mail)
> Subject: [wfs-dev] SRS of LatLongBoundingBox
>
>
> This question concerns the optional <LatLongBoundingBox>[s] that may be
> returned in the <FeatureType> elements of a GetCapabilities response.
> I'm
> having some confusion about what SRS the coordinates should be relative
> to.
>
> The WFS-capabilities.xsd schema file says that a <LatLongBoundingBox>
> should
> indicate the edges of the enclosing rectangle in the SRS of the
> associated
> feature. That seems clear, but then why is the element called
> LatLongBoundingBox? That seems to me to imply that the coordinates are
> geodetic, regardless of the associated feature's SRS. Which is correct?
>
> Thanks.
>
> -Dave
>
>
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