Comments on: Tutorial #5: The IP-mapping globe http://www.donhavey.com/blog/tutorials/tutorial-5-the-ip-mapping-globe/ Sustainably harvested information Tue, 09 Mar 2010 12:53:14 -0800 http://wordpress.org/?v=2.8.5 hourly 1 By: Tom Gonzalez http://www.donhavey.com/blog/tutorials/tutorial-5-the-ip-mapping-globe/comment-page-1/#comment-1067 Tom Gonzalez Sat, 21 Feb 2009 01:40:39 +0000 http://www.donhavey.com/blog/?p=50#comment-1067 Don, Thanks so much for posting the source. For us non math/map types understanding the projection details is invaluable. Have you posted this on the processing discourse? I could not find a link via their search. - Tom Don,

Thanks so much for posting the source. For us non math/map types understanding the projection details is invaluable. Have you posted this on the processing discourse? I could not find a link via their search.

- Tom

]]> By: Don http://www.donhavey.com/blog/tutorials/tutorial-5-the-ip-mapping-globe/comment-page-1/#comment-54 Don Wed, 14 May 2008 03:52:48 +0000 http://www.donhavey.com/blog/?p=50#comment-54 Yep. Correct. That list of points was generated from GIS data using ArcView GIS... which is a (now outdated) mapping program. I'm a bit of a map geek and tend to amass gigabytes of mapping data, but I think I originally got the stuff in question here: http://geodata.grid.unep.ch or here: http://data.geocomm.com/ I found some worldwide data set of country boundaries, simplified them, and then exported them as points. You can find user-generated plugins for that type of thing on the ArcView website. Converting geospacial data to lat/lon pairs was not very fun, but maybe there's a better way to do it? GIS data is grouped by polygons, so I think that was what the first number signified. Hope that helps. Yep. Correct. That list of points was generated from GIS data using ArcView GIS… which is a (now outdated) mapping program. I’m a bit of a map geek and tend to amass gigabytes of mapping data, but I think I originally got the stuff in question here:

http://geodata.grid.unep.ch

or here:

http://data.geocomm.com/

I found some worldwide data set of country boundaries, simplified them, and then exported them as points. You can find user-generated plugins for that type of thing on the ArcView website. Converting geospacial data to lat/lon pairs was not very fun, but maybe there’s a better way to do it?

GIS data is grouped by polygons, so I think that was what the first number signified.

Hope that helps.

]]> By: matt ditton http://www.donhavey.com/blog/tutorials/tutorial-5-the-ip-mapping-globe/comment-page-1/#comment-53 matt ditton Wed, 14 May 2008 03:09:42 +0000 http://www.donhavey.com/blog/?p=50#comment-53 Hi Don I was curious about the countries.txt file that you are loading the points from. Each line has three numbers. I understand that the second and third number relate to the lat and long of the location. But am I right in thinking that the first number groups the points into a shape (like a country boundary). It's seams like a great little file and I was wondering where it came from. BTW, I really like the site. Nice work on the tutorials. MattD Hi Don

I was curious about the countries.txt file that you are loading the points from. Each line has three numbers. I understand that the second and third number relate to the lat and long of the location. But am I right in thinking that the first number groups the points into a shape (like a country boundary). It’s seams like a great little file and I was wondering where it came from.

BTW, I really like the site. Nice work on the tutorials.

MattD

]]>