a question about my mapviewer program

[Bernhard Reiter]

On Mon, Dec 27, 2004 at 11:46:01AM -0800, Chris Barker wrote:
> Russell Nelson wrote:

> >In being able to edit layers?
> Absolutely!

> I'm hoping to be able to use Thuban as the basis for a special purpose 
> mapping program. What I need to do is be able to load various base maps, 
> generally either topos or nautical charts, and be able to draw stuff on 
> top of them, like lines and polygons, etc. I also need to be able to 
> load geo-data in custom vector formats. It looks like Thuban is already 
> well set up for loading the various data I need, so now I need a way to 
> create and edit vector data in it, and that sounds like just what you 
> want to do to.

The recent work to support ogr layers by Nina opens up many formats
for Thuban.

> I suppose I could take what you've done and work from that, (wxPython 
> vs., GTK aside), but it seems to me that Thuban already has solved a lot 
> of problems with file formats, projections, fast rendering of vector 
> data, etc, so why not use it?

Especially if projection come into the game, a simple GIS application
is getting much more complicated.

> By the way, I have written a little mapping engine myself, for wxPython, 
> but it doesn't support raster data. Rather than adding that support, I'm 
> hoping to adapt Thuban to my needs. Mine is called FloatCanvas (I use it 
> for other data that aren't maps as well) it is now part of the wxPython 
> demo/lib, or you can get it here:
> 
> http://home.comcast.net/~chrishbarker/FloatCanvas

Is it Free SoftwarE? I did not find any statements on the page
or in the file in the archive. If not I suggest to make it Free Software
and also submit it to www.freegis.org. 
Another wish: add a screenshot to the page. ;)

Best,
	Bernhard


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