Re: Map co-ordinate polygons

From:

Joshua Cranmer <Pidgeot18@verizon.invalid>

Newsgroups:

comp.lang.java.help

Date:

Wed, 23 Feb 2011 08:53:40 -0500

Message-ID:

<ik33h7$djd$1@news.eternal-september.org>

On 02/23/2011 08:03 AM, Roedy Green wrote:

I have spend about an hour looking unsuccessfully for some map
co-ordinates. What I was hoping to find was the co-ordinates for a
polygon for each Canadian province and each US State, in variety of
levels of detail.

<http://commons.wikimedia.org/wiki/File:Blank_US_Map.svg> has the US
to a low level of detail. If you want Canada, there is
<http://en.wikipedia.org/wiki/File:Canada_provinces-blank-map_XMLcomments-CSSclasses-SVGids_green.svg>.

Hell, just a few minutes with Google image search should be able to get
one for you: just google <place> map, with images selected to only SVG,
and you should be able to find a decent lo-res map.

If you want hi-res maps (as in, surveying quality, so accurate to within
feet), you can probably find free GIS maps from the appropriate
government authority. GIS data also should include full GPS coordinates
for each point in the polygon.

--
Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth