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December 2008 Archives

December 10, 2008

New Google Ads format

You may have noticed on our http://maps.huge.info/zip.htm site that the ads on the lower right hand corner now change as the map moves around. This is an exciting and really great change that Google is just now implementing to show more relevant ads to map users.

December 16, 2008

FTP script for TIGER2008 download

By now, many know that the new version of the Tiger shapefiles, TIGER2008 has been released. The directory format of this version is quite complex and very difficult to automate a download. We've already done the hard work, and are making this script available for those who wish to use it.


To execute this script (from a Linux/Unix/Mac) simple key:

ftp anonymous@ftp2.census.gov < tiger2008-ftp-script.txt

Your ftp program will ask for a password, use your e-mail address. Once the program starts, be prepared to download 40,533 individual zip files with a total space of about 20 gigs. If the script aborts, check what's been downloaded, delete the last file, edit the script to start at that point and restart the process. It will probably take a couple of days to finish.

December 17, 2008

Tiger2007 vs. Tiger2008

Besides a couple of technical changes to the basic shapefiles released in the new Tiger2008 version, a lot more data has been included in Tiger2008 when compared to Tiger2007.

The two most important tables with Tiger are the edges (line segments like roads, rivers, boundaries, etc.) and faces (polygons made from edges). Here's a comparison count between the two versions:

edges 64,830,691
faces 19,814,918

edges 71,204,516
faces 21,576,497

As you can see, there are over 6,000,000 new edges in Tiger2008. That's a huge increase and represents new roads mostly that weren't in previous versions of Tiger.

December 24, 2008

New Zipcodes - 2009/01

Four new zip codes added in January:

09362 APO

About December 2008

This page contains all entries posted to maps.huge.info / USNaviguide LLC in December 2008. They are listed from oldest to newest.

November 2008 is the previous archive.

February 2009 is the next archive.

Many more can be found on the main index page or by looking through the archives.

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