[Geomoose-users] NASA OnEarth wms
FRANZ OKYERE
franzzoa at hotmail.com
Thu Jan 21 16:31:28 EST 2010
Hi Brent and all, I paid a visit to the hypersphere website to download a landsat tile or two and the download keeps being aborted. Is this to be expected? Otherwise I need sources to some background for the ghana, w-africa area. I'm kinda fed up with the nasa wms- i'm trying Brent's possible solution. Thanks. Franz
> Date: Thu, 10 Dec 2009 08:12:25 -0700
> From: bfraser at geoanalytic.com
> To: richard.moore at mnsu.edu
> CC: geomoose-users at lists.sourceforge.net
> Subject: Re: [Geomoose-users] NASA OnEarth wms
>
> This is to be expected (I think). The providers of the various WMS servers
> decide on which Spatial reference systems their data will be served in (usually
> one or two). If it is not an SRS you like, with most browser-based WMS clients
> you cannot use the data.
>
> With GeoMoose v2, Dan made an enhancement to warp the imagery from the WMS
> server SRS to the SRS you've selected in GeoMoose. A simple warp is not a
> rigorous map projection, so the farther you zoom out the worst the warp
> approximation is.
>
> Possible solutions:
> 1. Set up your GeoMoose site to use the same SRS as the WMS servers (4326? yuck!)
> 2. Pass the WMS stream through Mapserver to re-project it (use Mapserver as a
> WMS client, then serve it up to GeoMoose).
> 3. Serve the data yourself: Dowload the Landsat data from
> http://hypersphere.telascience.org/onearth/. Then combine the bands for natural
> color, fuse the pan band to increase the resolution from 30m to 15m, then do
> some color adjusting (yikes!).
>
> Best Regards,
> Brent Fraser
>
> Moore, Richard J wrote:
> > Hello all,
> >
> >
> >
> > I want to ask a question about the NASA Global Mosaic and how it doesn’t
> > match up with the data at a statewide zoom and and farther out. I added
> > a layer EROS that uses the projection 4326 and added it similarly to the
> > mapbook.xml as the global mosaic. At the statewide zoom, the images and
> > the county layers do not match up. As you zoom in, the lines approach
> > the correct placement on the map.
> >
> >
> >
> > You can see the example of this at this site.
> > http://gis.wrc.mnsu.edu/mrmp/geomoose.html
> >
> >
> >
> > I noticed Devon Piernot had an issue with this on October 15, 2009 and
> > didn’t see a response on the forums to his question. Also, Efstathios
> > Arapostathis remarked about having problems with this also. I just
> > installed GM 2.0.1 yesterday and had only made changes to the
> > mapbook.xml by adding some layers.
> >
> >
> >
> > Any suggestions? I can send the mapbook if need be.
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Rick
> >
> >
> >
> > Rick Moore
> >
> > GIS Research Analyst
> >
> >
> >
> > Water Resources Center
> >
> > 184 Trafton Science Center South
> >
> > Minnesota State University, Mankato
> >
> > Mankato, MN 56001
> >
> >
> >
> > (507) 389-3267
> >
> > richard.moore at mnsu.edu
> >
> > http://mavdisk.mnsu.edu/moorer2/
> >
> >
> >
> > *From:* Devon Piernot [mailto:piernotd at uwplatt.edu]
> > *Sent:* Thursday, October 15, 2009 6:12 PM
> > *To:* geomoose-users
> > *Subject:* [Geomoose-users] NASA OnEarth wms
> >
> >
> >
> > First off, thank you to everyone who has helped my application get this far.
> >
> > As with the demo, I am trying to use the NASA global mosaic in my
> > geomoose application, but I may be having some problems with
> > projections. I have defined EPSG:3071, which is the Wisconsin
> > Transverse Mercator http://www.spatialreference.org/ref/epsg/3071/ and
> > all of my own data is in this projection, but the global mosaic does not
> > recognize it. When I leave the wms in EPSG:4326 the image shows up, but
> > it matches the map less and less at smaller scales. This can be seen on
> > the demo here: http://gis.swwrpc.org/geomoose2/geomoose.html (zoom in
> > and it looks ok, but zoom out and it is way off).
> >
> > I see that the default projection for the global mosaic is EPSG:4326,
> > does this mean that I cannot reproject it in geomoose 2.0?
> >
> > I followed the instructions here:
> > http://www.geomoose.org/moose/howto/wms_project.html but to no avail,
> > which makes me believe it could be a problem with my configuration
> > somehow. Should I instead write a mapfile to take the wms?
> >
> > Here is the code from my mapbook (with the default projection):
> > <map-source name="nasa" type="wms" tiled="false" projection="EPSG:4326">
> > <url>http://wms.jpl.nasa.gov/wms.cgi</url>
> > <layer name="global_mosaic"/>
> > <param name="format" value="image/jpeg" reproject="true"/>
> > </map-source>
> >
> > ...and here is my projection:
> > Proj4js.defs["EPSG:3071"] = "+title= NAD83(HARN) / Wisconsin Transverse
> > Mercator +proj=tmerc +lat_0=0 +lon_0=-90 +k=0.9996 +x_0=520000
> > +y_0=-4480000 +ellps=GRS80 +units=m +no_defs";
> >
> >
> > Thank you all for your help
> >
> > --
> >
> > Devon Piernot
> > GIS / Web Developer
> > Southwestern Wisconsin Regional Planning Commission
> > (608) 342-6065
> > piernotd at uwplatt.edu <mailto:piernotd at uwplatt.edu>
> > www.swwrpc.org <http://www.swwrpc.org>
> >
> > ------------------------------------------------------------------------------
> > Return on Information:
> > Google Enterprise Search pays you back
> > Get the facts.
> > http://p.sf.net/sfu/google-dev2dev
> >
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Geomoose-users mailing list
> > Geomoose-users at lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/geomoose-users
>
> ------------------------------------------------------------------------------
> Return on Information:
> Google Enterprise Search pays you back
> Get the facts.
> http://p.sf.net/sfu/google-dev2dev
> _______________________________________________
> Geomoose-users mailing list
> Geomoose-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/geomoose-users
_________________________________________________________________
Do you have a story that started on Hotmail? Tell us now
http://clk.atdmt.com/UKM/go/195013117/direct/01/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/geomoose-users/attachments/20100121/760c6114/attachment.html
More information about the Geomoose-users
mailing list