wcs issues on getting data

[Nuno GIL]

Pericles,

I have some kind of problem in the compilation of
mapserver. Detected the problem compiling it on
another machine. Now the WCS works :-)
There is only a problem with the data values it is
returning.

I opened both the source and the obtained 16-bit srtm
images with envi. I linked both geographically and the
data values are a bit different on each one. As an
example I attach a snapshot of it!

Another thing is that when I run the gdalinfo tool on
both, the source image displays
(...)
Band 1 Block=1201x1 Type=Int16, ColorInterp=Gray

while the obtained one displays:
(...)
Band 1 Block=1200x3 Type=Int16, ColorInterp=Gray

The 1201 vs 1200 is easy to explain. The size of the
specified bbox in the request is the responsable for
that. But what abou the x1 and the x3? Can you tell me
what do they mean?
Thank you very much for your help,
Regards,
Nuno


--- Nuno GIL <nunoragil at YAHOO.COM> wrote:

> Pericles,
>
> I'm running the latest mapserver nightly build and
> gdal-1.2.3.
>
> Mapserver integrates these options:
> MapServer version 4.4.0-beta1 OUTPUT=GIF OUTPUT=PNG
> OUTPUT=JPEG OUTPUT=WBMP SUPPORTS=PROJ
> SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER
> SUPPORTS=WMS_CLIENT SUPPORTS=WCS_SERVER INPUT=EPPL7
> INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>
> and GDAL was compiled with internal TIFF and GEOTIFF
> support.
> Do you think that I should upgrade GDAL and that it
> can solve the problem?
> Does the map file seem okay to you?
>
> Regards,
> Nuno
>
> --- "Pericles S. Nacionales" <nacional at cbs.umn.edu>
> wrote:
>
> > Nuno,
> >
> > Are you running the latest versions of MapServer
> and
> > GDAL?  Did you
> > compile GDAL with the internal TIFF library or an
> > external one?
> >
> > -Perry
> >
> >
> > On Wed, 2004-11-10 at 13:49 -0800, Nuno GIL wrote:
> > > Hi Pericles,
> > >
> > > Let me just point out the results of your
> > suggestions:
> > >
> > > 1. Yes, by requesting
> > >
> >
>
http://iceds.ge.ucl.ac.uk/cgi-bin/wcs?map=/ge/data/iceds/alpha/umms/wcs_land3.map&layer=L5&mode=map
> > >
> > > A map is shown
> > >
> > > 2. This image is a 8-bit one. I've included:
> > >   OUTPUTFORMAT
> > >     NAME GEOTIFF_8b
> > >     DRIVER "GDAL/GTiff"
> > >     IMAGEMODE PC256
> > >   END
> > > With the original GetCoverage request the file
> is
> > > still empty
> > >
> > > 3. Already inserted the projection block Frank
> > > suggested and no good result as well
> > >
> > > :(
> > >
> > > This is getting difficult... Thanks for your
> time
> > and
> > > help,
> > > Nuno
> > >
> > >
> > > --- "Pericles S. Nacionales"
> > <nacional at CBS.UMN.EDU>
> > > wrote:
> > >
> > > > On Wed, 2004-11-10 at 10:31 -0800, Nuno GIL
> > wrote:
> > > > > Dear listers,
> > > > > I've installed mapserver in order to use its
> > wcs
> > > > > capabilities.
> > > > > The GetCapabilities request works fine, the
> > > > problem is
> > > > > when I try to use the GetCoverage request.
> > > > Actually I
> > > > > don't receive any error message, but the
> > received
> > > > file
> > > > > is empty.
> > > > > I'm querying the server with this request:
> > > > >
> > > >
> > >
> >
>
http://iceds.ge.ucl.ac.uk/cgi-bin/wcs?REQUEST=GetCoverage&COVERAGE=l5&SERVICE=WCS&map=/ge/data/iceds/alpha/umms/wcs_land3.map&BBOX=48.5,-21.5,48.7,-21.3&FORMAT=GEOTIFF_RGB&CRS=EPSG:4326&RESX=0.00027778&RESY=0.00027778
> > > > ...
> > > > > Does anyone understands what is going wrong?
> > Any
> > > > help
> > > > > would be much appreciated.
> > > >
> > > > Nuno,
> > > >
> > > > 1. Are you able to see the image when you run
> a
> > > > regular MapServer CGI
> > > > request (i.e.
> > > >
> > >
> >
>
http://iceds.ge.ucl.ac.uk/cgi-bin/wcs?map=/ge/data/iceds/alpha/umms/wcs_land3.map&layer=LC5&mode=map)?
> > > >
> > > > 2. Is your image 16- or 8-bit?  If 8-bit,
> > perhaps
> > > > you should replace
> > > > IMAGEMODE INT16 with IMAGEMODE PC256 in
> > OUTPUTFORMAT
> > > > (also replace the
> > > > NAME accordingly).
> > > >
> > > > 3. What Frank said in another post.
> > > >
> > > > Cheers!
> > > > Perry
> > > > --
> > > > Pericles S. Nacionales <nacional at cbs.umn.edu>
> > > >
> > >
> > >
> > >
> > >
> > > __________________________________
> > > Do you Yahoo!?
> > > Check out the new Yahoo! Front Page.
> > > www.yahoo.com
> > --
> > Pericles S. Nacionales <nacional at cbs.umn.edu>
> >
> >
>
>
>
>
>
> __________________________________
> Do you Yahoo!?
> Check out the new Yahoo! Front Page.
> www.yahoo.com
>



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