Elliott C. Back: Technology FTW!

American States GIS Dataset

Posted in Code by Elliott Back on November 1st, 2004.

Update: The dataset is finished, and very pretty.

For a CS490 project I’m working on I need to colour a map of the US by continental state. Now, this is easy–except I needed a set of (x, y) points for each state’s boundaries–which is incredibly hard to find. There are GIS sets for every contour of the US at giant resolutions, but I couldn’t find a simple poly approximation of the states for graphic purposes. So, I’m hand drawing it. It’s not accurate–but it’s for a demographic demo, so it doesn’t need to be. Here’s a preview:

US State Boundaries Data

Still to do:

  • Finish adding the tiny eastern states
  • Merge points of intersection for uniformity
  • Import from {x1,y1, … , xn, yn} to {x1, x2, … , xn} and {y1, y2, … , yn} format.

When I finish the dataset, I will append it to this post. No one should have to cull US state boundary data again….

Update: I have imported it into matlab form, now. It’s still rough, and the points haven’t been merged, but good progress has been made. Check it out.

Matlab US Map Data

This entry was posted on Monday, November 1st, 2004 at 9:55 pm and is tagged with boundary data, state boundary, y1, map of the us, eastern states, american states, yn, approximation, contour, uniformity, resolutions, points of intersection, xn, boundaries, demo. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback.

 

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  • free

    12/2/2007 at 8:33 am

    hello... agree...

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