VS: [mapserver-users] Re: WCS Geotiff output issue

Wed Nov 9 03:07:14 EST 2011

This behaviour is unexpected, so it might be a bug.
I would suggest that you file a ticket on the probable bug
instead.

I have added a "note" in the WCS server documentation (where
it is stated that this probably is due to a bug).

Håvard

On 11/8/2011 10:17 PM, Rahkonen Jukka wrote:
> Hi,
>
> Would you mind making a trac request http://trac.osgeo.org/mapserver/ for improving WCS server documentation http://www.mapserver.org/ogc/wcs_server.html so that Configuring Your Mapfile to Serve WCS Layers clearly says that layer must have / it is strongly recommended to include projection object?
> In WMS server documentation is is written "Here is the list of parameters and metadata items that usually optional with MapServer, but are required (or strongly recommended) for a WMS configuration:"
>
> -Jukka Rahkonen-
>
> ________________________________
> Lähettäjä: mapserver-users-bounces at lists.osgeo.org [mapserver-users-bounces at lists.osgeo.org] käyttäjän Guillaume Loiselle [loiselle.guillaume at gmail.com] puolesta
> Lähetetty: 8. marraskuuta 2011 15:58
> Vastaanottaja: mapserver-users at lists.osgeo.org
> Aihe: Re: VS: [mapserver-users] Re: WCS Geotiff output issue
>
> Hi,
>
> Wow! Adding a projection object on layer level fixed the problem. I was sure the map level projection object was used when a layer was lacking it. Now the result is the same than that of the WMS GeoTiff output (except for the background color but that's not an issue).
>
> Thanks a lot for your help!
> Guillaume Loiselle
>
>
> 2011/11/7 Rahkonen Jukka<Jukka.Rahkonen at mmmtike.fi<mailto:Jukka.Rahkonen at mmmtike.fi>>
> Hi,
>
> Mapfile looks good to me. I fear I have only two suggestions left:
> - try adding projection also to the layer even it should use the map level projection by default
> - forget HDF5 for a moment and use some geotiff instead to check if there are some oddities due to source data format
>
> -Jukka Rahkonen-
>
> ________________________________
> Lähettäjä: mapserver-users-bounces at lists.osgeo.org<mailto:mapserver-users-bounces at lists.osgeo.org>  [mailto:mapserver-users-bounces at lists.osgeo.org<mailto:mapserver-users-bounces at lists.osgeo.org>] Puolesta Guillaume Loiselle
> Lähetetty: 7. marraskuuta 2011 23:07
> Vastaanottaja: mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>
> Aihe: Re: [mapserver-users] Re: WCS Geotiff output issue
>
> Hi,
>
> Both mapfile and datasource are available in the first email I sent.
>
> http://lists.osgeo.org/pipermail/mapserver-users/2011-November/070670.html
>
> Filenames appear to be a little bit messed up but the data itself is fine. I don't know why it went so wrong.
>
> Mapfile : http://lists.osgeo.org/pipermail/mapserver-users/attachments/20111104/78e5fa24/2011102811-0001.obj
>
> Data (HDF5 format) : http://lists.osgeo.org/pipermail/mapserver-users/attachments/20111104/78e5fa24/data-0001.obj
>
> I intend to stick with 1.0.0 indeed. At least until it works... I will look up 1.1.0's details in due time.
>
>
>
>
> 2011/11/7 Rahkonen Jukka<Jukka.Rahkonen at mmmtike.fi<mailto:Jukka.Rahkonen at mmmtike.fi>>
> Pity that is was not just version mismatch.  Could it be possible to see your mapfile and info about the datasource?
> Stay with version 1.0.0 while testing. With version 1.1.0 you must give EPSG:4326 coordinates in Northing-Easting order which can make things more complicated.
>
> -Jukka Rahkonen-
> ________________________________
> Guillaume Loiselle wrote:
>
> Hi,
>
> I'm afraid it isn't. I didn't notice the request version I sent was a "mixed" one but I tried Coverage on 1.0.0 and Identifier on 1.1.0 as well and the result was basically the same.
> Here is the 1.1.0 version of the error :
>
>
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <ows:ExceptionReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ows="http://www.opengis.net/ows/1.1" version="1.1.0" xml:lang="en-US" xsi:schemaLocation="http://www.opengis.net/ows/1.1 http://schemas.opengis.net/ows/1.1.0/owsExceptionReport.xsd">
>   <ows:Exception exceptionCode="bbox" locator="NoApplicableCode">
>     <ows:ExceptionText>
> msWCSGetCoverage(): WCS server error. Requested BBOX (-178.804111261525,2802.84894277903,179.578125552223,2907.18853507175) is outside requested coverage BBOX (-70,45,-55,52)</ows:ExceptionText>
>   </ows:Exception>
> </ows:ExceptionReport>
>
>
> I of course spent a lot of time on the WCS server documentation page. I saw no reference to such a problem, though. My request,
>
> http://localhost/cgi-bin/mapserv.exe?
> map=D:/Guillaume/ProjetCourantsGlaces/WCSproblem/2011102811.map&
> SERVICE=WCS&
> VERSION=1.0.0&
> REQUEST=GetCoverage&
> COVERAGE=thelayer&
> CRS=EPSG:4326&
> BBOX=-67.5,48.922499263758255,-64.6875,50.736455137010665&
> WIDTH=256&
> HEIGHT=256&
> FORMAT=GTiff
>
> is formatted the same way the example is :
>
> http://my.host.com/cgi-bin/mapserv?
> map=mywcs.map&
> SERVICE=wcs&
> VERSION=1.0.0&
> REQUEST=GetCoverage&
> coverage=bathymetry&
> CRS=EPSG:42304&
> BBOX=-2200000,-712631,3072800,3840000&
> WIDTH=3199&
> HEIGHT=2833&
> FORMAT=GTiff
>
>
> My mapfile contains every required attribute.
>
> Thank you.
> Guillaume Loiselle
>
>
> 2011/11/7 Rahkonen Jukka<Jukka.Rahkonen at mmmtike.fi<mailto:Jukka.Rahkonen at mmmtike.fi><mailto:Jukka.Rahkonen at mmmtike.fi<mailto:Jukka.Rahkonen at mmmtike.fi>>>
> Hi,
>
> See examples in http://www.mapserver.org/ogc/wcs_server.html and try to avoid mixing versions 1.0.0 and 1.1.0. Let's hope using "coverage" instead of "identifier" will be enough.
>
> -Jukka Rahkonen-
> ________________________________
> Lähettäjä: mapserver-users-bounces at lists.osgeo.org<mailto:mapserver-users-bounces at lists.osgeo.org><mailto:mapserver-users-bounces at lists.osgeo.org<mailto:mapserver-users-bounces at lists.osgeo.org>>  [mapserver-users-bounces at lists.osgeo.org<mailto:mapserver-users-bounces at lists.osgeo.org><mailto:mapserver-users-bounces at lists.osgeo.org<mailto:mapserver-users-bounces at lists.osgeo.org>>] käyttäjän Guillaume Loiselle [loiselle.guillaume at gmail.com<mailto:loiselle.guillaume at gmail.com><mailto:loiselle.guillaume at gmail.com<mailto:loiselle.guillaume at gmail.com>>] puolesta
> Lähetetty: 7. marraskuuta 2011 21:21
> Vastaanottaja: mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org><mailto:mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>>
> Aihe: [mapserver-users] Re: WCS Geotiff output issue
>
> Hi,
>
> For some reason, the text part of the email didn't make it. It can be read below.
> Attachments can still be found in the first message :
> http://lists.osgeo.org/pipermail/mapserver-users/2011-November/070670.html
>
> Thanks.
> Guillaume Loiselle
>
>
> 2011/11/4 Guillaume Loiselle<loiselle.guillaume at gmail.com<mailto:loiselle.guillaume at gmail.com><mailto:loiselle.guillaume at gmail.com<mailto:loiselle.guillaume at gmail.com>><mailto:loiselle.guillaume at gmail.com<mailto:loiselle.guillaume at gmail.com><mailto:loiselle.guillaume at gmail.com<mailto:loiselle.guillaume at gmail.com>>>>
> Hi,
>
> I installed MapServer 6.0.1 on Windows XP from MS4W. I cannot give you access to my MapServer instance but I can show you what "-v" gives me :
>
> MapServer version 6.0.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=KML SUPPORTS=PR
> OJ SUPPORTS=AGG SUPPORTS=CAIRO SUPPORTS=FREETYPE SUPPORTS=ICONV SUPPORTS=FRIBIDI
>   SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT
>   SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPO
> RTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>
> I am able to generate a GeoTiff file through the use of a WMS service (see attachment : wmsoutput.tif). The request is :
>
> http://localhost/cgi-bin/mapserv.exe?SERVICE=WMS&map=D:/Guillaume/ProjetCourantsGlaces/WCSproblem/2011102811.map&LAYERS=thelayer&VERSION=1.1.1&REQUEST=GetMap&bbox=-67.5,48.922499263758255,-64.6875,50.736455137010665&SRS=EPSG:4326&WIDTH=256&HEIGHT=256&FORMAT=GTiff
>
> However, I cannot do so with a WCS service. I first tried with :
>
> http://localhost/cgi-bin/mapserv.exe?SERVICE=WCS&map=D:/Guillaume/ProjetCourantsGlaces/WCSproblem/2011102811.map&IDENTIFIER=thelayer&VERSION=1.0.0&REQUEST=GetCoverage&BBOX=-67.5,48.922499263758255,-64.6875,50.736455137010665&CRS=EPSG:4326&WIDTH=256&HEIGHT=256&FORMAT=GTiff
>
> , to which I can add :
>
> &RESPONSE_CRS=EPSG:4326
>
> for the same result (since 4326 is my native projection). Said result is not a tiff file, but an error :
>
> <?xml version='1.0' encoding="ISO-8859-1" ?>
> <ServiceExceptionReport version="1.2.0"
> xmlns="http://www.opengis.net/ogc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/ogc http://schemas.opengis.net/wcs/1.0.0/OGC-exception.xsd">
>   <ServiceException code="NoApplicableCode" locator="bbox">msWCSGetCoverage(): WCS server error. Requested BBOX (-178.835708198757,2803.05273104522,179.552848002437,2906.98474680556) is outside requested coverage BBOX (-70,45,-55,52)
>   </ServiceException>
> </ServiceExceptionReport>
>
> This error doesn't make sense to me. Which projection is it using to get these silly values? Anyway, the BBOX in the request is definitely included in the extent... Now what if I change the Response_CRS? I would expect it to give me the same error, since it doesn't affect the requested BBOX. Yet, this time no error is produced and I obtain a tiff file (see attachment : wcsoutput.tif). The data is all wrong (0 everywhere), though. And if I open both WMS and WCS obtained tiffs in QuantumGIS, they appear nowhere near each other (for the same bbox... yes).
>
> I attached the results of GetCapabilities and DescribeCoverage requests as well as the MapServer logs (modified to map logs with requests). The data source is an HDF5 file (see attachment : data.h5). I suspect an issue on MapServer's side but I would be happy if you could tell me it's all my fault (and how to fix it).
>
> Oh, a last thing : it may or may not be related. I had issues with the KML/KMZ WMS outputformats. Results for epsg:4326 and epsg:900913 were completely different (and wrong, of course). I might open a new discussion on this subject at some point.
>
> Thank you all for your help.
> Guillaume Loiselle
>
> P.S. : If you want to test, know that epsg:900913 is the same as epsg:3857 (which is more likely to be in your epsg reference file).
>
>
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-- 
Håvard Tveite
Department of Mathematical Sciences and Technology, UMB
Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY
Phone: +47 64965483 Fax: +47 64965401 http://www.umb.no/imt/