[udig-devel] loading browser-based map sites in udig
as base/background layer?
Jody Garnett
jgarnett at refractions.net
Fri Jan 4 12:29:08 PST 2008
Eric Jarvies wrote:
> hello,
>
> what would it take to be able to load sites like yahoo maps, et, al,
> into udig and being able to use them as backgrounds?
A license agreement. I think you can get a yahoo id of some sort and
armed with that we could grab images. I know that the open street map
project managed to make arrangements along those lines. For other things
like google maps there is only a javascript api; while you can reverse
engineer things and use google maps as a background they have a history
of noticing and sending nice letters when projects are found out.
The other alternative is nasa world wind servers; I made an example
community module as a proof of concept that is kind of fun. It has
better uptime that the jpl server used in the walkthrough and my
implementation tiles the background.
> I am having to put together points/locations(POIs) that cover a fair
> amount of geo-space, and i am always having to open my
> browser(openmaps/yahoo maps/google maps/etc) to take a look at the sat
> images for visual reference. it would be wonderful if i could simply
> load the browser-based map sites into udig, easily set the x, y, and
> zoom level, have my vector shapefiles auto-adapt the same projection
> view/etc. as the base/background browser-based map, and essentially be
> able to move around my vector shapefiles, whilst also having the
> browser-based maps in the background move along/generate new
> views/tiles as-well.
So what is the problem here? Access to the data used by the browser
based mapping solutions? Or access to a background the is slippy. You
can open an embedded browser up inside udig; but there is no integration
unless you want to write it?
> the other option is loading 256x256 image tiles, but this would then
> require a fair amount of conversion work i assume.
It is not much work; the nasa world wind tile example shows how. But the
problem is the data costs a lot of money.
> If anyone has some good advice, i would appreciate it. thank you,
> eric
Cheers,
Jody
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