[mapserver-users] Getting started with WCS on mapserver...

[Carl Godkin]

Hi Jukka,

Thank you for the explanation.  I will see about using DescribeCoverage
instead.  I just tried it with my server and the gml:Envelope is indeed
filled in properly and I should be able to use it.

carl

On Mon, Oct 18, 2021 at 11:49 AM Rahkonen Jukka (MML) <
jukka.rahkonen at maanmittauslaitos.fi> wrote:

> Hi,
>
>
>
> The wgs84-BoundingBox is an optional element in the CoverageSummary by the
> WCS 2.0.1 standard. There may be no way to configure Mapserver to add that
> information into GetCapabilities. You must read extents coverage by
> coverage with DescribeCoverage requests. But the boundedBy in that place is
> using the native CRS of the coverage like here:
>
>
>
> <gml:boundedBy>
>
> <gml:Envelope srsName="http://www.opengis.net/def/crs/EPSG/0/3067"
> axisLabels="x y" uomLabels="m m" srsDimension="2">
>
> <gml:lowerCorner>212000 6762000</gml:lowerCorner>
>
> <gml:upperCorner>218000 6768000</gml:upperCorner>
>
> </gml:Envelope>
>
> </gml:boundedBy>
>
>
>
> The extent that appears in DescribeCoverage can be configured with the
> “wcs_extent” metadata if it does not get generated automatically right.
> Having wgs84-BoundingBox in CoverageSummary could be useful for WCS clients
> but even the GetCapabilities example in the WCS Core 2.0.1 standard does
> not contain it.
>
>
>
> -Jukka Rahkonen-
>
>
>
> *Lähettäjä:* MapServer-users <mapserver-users-bounces at lists.osgeo.org> *Puolesta
> *Carl Godkin
> *Lähetetty:* maanantai 18. lokakuuta 2021 21.24
> *Vastaanottaja:* mapserver-users at lists.osgeo.org
> *Aihe:* [mapserver-users] Getting started with WCS on mapserver...
>
>
>
> Hi,
>
>
>
> A week and a half ago I asked about using Mapserver +WMS to serve
> elevation data since I was following a tutorial that discussed WMS.
>
>
>
> In one of the replies I received, Jeff suggested that I actually wanted
> WCS for my use case which was a forehead slap + d'oh! moment for me.  Of
> course I do!
>
>
>
> Anyway, I have followed the Mapserver WCS docs and everything seems to
> work well.
>
>
>
> However, I have one question that may be kind of niche or will perhaps
> betray my overall ignorance.
>
>
>
> A while ago I wrote a WCS client for another project and it expects WCS
> version 2.0 requests.
>
>
>
> The map file that I made up (based closely on the one in the docs:
> https://mapserver.org/ogc/wcs_server.html#example-wcs-server-mapfile )
> seems to work fine for WCS 1.0, 1.1, and 2.0.  However, I don't seem to get
> a bounding box from GetCapabilities in the CoverageSummary from my 2.0
> requests whereas I certainly do from the 1.1 request:
>
>
>
> I get this from VERSION=1.1.0:
>
>
>
> <Contents>
>
> <CoverageSummary>
>
> <ows:Title>bathymetry</ows:Title>
>
> <ows:Abstract/>
>
> <ows:WGS84BoundingBox dimensions="2">
>
> <ows:LowerCorner>-180 -90</ows:LowerCorner>
>
> <ows:UpperCorner>180 90</ows:UpperCorner>
>
> </ows:WGS84BoundingBox>
>
> <SupportedCRS>urn:ogc:def:crs:EPSG::4326</SupportedCRS>
>
> <SupportedFormat>image/tiff</SupportedFormat>
>
> <Identifier>bathymetry</Identifier>
>
> </CoverageSummary>
>
> </Contents>
>
>
>
> whereas I get just this from VERSION=2.0.1:
>
>
>
> <wcs:Contents>
>
> <wcs:CoverageSummary>
>
> <wcs:CoverageId>bathymetry</wcs:CoverageId>
>
> <wcs:CoverageSubtype>RectifiedGridCoverage</wcs:CoverageSubtype>
>
> </wcs:CoverageSummary>
>
> </wcs:Contents>
>
>
>
> Is there something I can add to my WCS map file to get the "ows:WGS84BoundingBox"
> element returned in my GetVersion?  I believe I was working with Geoserver
> sources when I wrote that client but I would really like to get the
> geographic extents.
>
>
>
> Thank you very much for the great documentation!
>
>
>
> carl
>
>
>
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