[udig-devel] request google projection

[Jody Garnett]

Eric Jarvies wrote:
>>> i just need a way to overlay my shapefile(s) atop sat images, so i 
>>> can make visual references for the purpose of denoting whether or 
>>> not there is construction/structures atop a given section of land, 
>>> if certain elements/landmarks are indeed there, and tasks along 
>>> these lines.  purely for visual reference for the sake of aiding me 
>>> in performing various overlay vector-based tasks.
>> Cool; you want to try the Nasa World Wind servers? It may be exactly 
>> what you needed...
>> Follow the walkthrough 1 instructions to add my community plugin to 
>> your eclipse and they will show up in the catalog.
> i will add it and give it a try, thank you.
>
> in mexico, if you take and view street-level and sat images in hybred 
> mode, you will see that street-level roads are several meters off most 
> cases.  when someone like myself adds his own shapefiles to the mix, 
> ported to kml or mashed-up via openlayers, these same errors occur, 
> but not uniform with those of googles own errors.  so a mashed-up map 
> containing a google sat image of the road, a google street level path 
> of the road(making a hybred view), and then add my own ported 
> shapefile/postgresql/etc path of the road to the mix ... it's a disaster.
Oh that is (I think) a solved problem. You need to use the new magic 
google projection that the geoserver dudes figured out; I am not sure if 
we have the code added to udig yet - lets ask Jesse.
> i merely want a way to edit layers atop the actual product they will 
> eventually be residing upon, being able to do so with yahoo, mapquest, 
> google, and microsoft, openstreetmaps, and even other map sites or 
> clients with map sites in place, that may need something i have to 
> offer, and prior to delivering it, and without having to mash-up 
> anything, i could simply use udig to do the proofing.
Okay cool - yeah that is a different problem. As long as we can display 
*any* background at all in the projection that matches google earth you 
should be fine. Lets hunt down the WKT definition of the google 
projection and then you can just export your shapefiles in something 
that matches google. As far as I remember yahoo maps uses a more 
standard projection ... you may have to head over to geotool-users and 
ask for the details on this stuff.
> for those of us who wish to share their maps/data, the above-mentioned 
> allows us to do so easily.  can place openstreetmaps as a background, 
> and then overlay our own maps, and easily remove from our maps what 
> openstreetmaps already has documented/mapped, then easily take that 
> edited map/data and upload it to openstreetmaps, for example.  heck, 
> udig could do the same for openaerialmaps, and any another site like 
> these.  again, being able to take ready work, work in progress, and 
> final delivery vehicles(ggogle maps), and make them play nicely in one 
> area.
The open street maps project has a java api and could be relatively 
easily dropped into udig.
> what would really be cool, is if udig had the capability of service up 
> a current view, be it one layer or 20 layers.  but just being able to 
> serve up that view, and then via geoserver-meets-chat, take and serve 
> up that view to another udig user, who receives the view as a layer 
> within his udig.
There was some collaborative work combining an open web context document 
and an irc chat I saw demoed - did not see the idea go very far but it 
is a known idea. Still plenty of great thoughts; I gotta go hack for the 
day but would welcome an IRC chat or conference call on these topics; it 
would be great to scare up funds in these directions.

Cheers,
Jody