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Re: county and urban shapefiles [message #58547]

Sat, 02 February 2008 09:30

KRDean
Messages: 69
Registered: July 2006

Member

On Feb 1, 12:33 pm, mcn...@neo.tamu.edu wrote:
> I'm looking to add county and urban borders to some plots I'm
> producing for my graduate work (more specifically, the city limits of
> Houston and borders of the surrounding counties). Does anybody know
> where I can find these shapefiles and how I can implement them into my
> code?
>
> Thanks! -Andy McNeel

I like to visit the GIS Depot to get those (free) administrative and
political shapefiles.

http://data.geocomm.com/catalog/US/61085/sublist.html

Also, the ESRI ArcData site has a nice way to extract (free) data for
shapefiles over different parts of the world, like Dunedin, New
Zealand. You select the region of interest and the site will save all
the shapefiles in a a nice downloadable zip file.

http://arcdata.esri.com/data_downloader/DataDownloader?part= 10200

And of course, David Fanning has tutorials for reading these files
with IDL and applying them for your project.

Kelly Dean
Fort Collins, CO

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Re: county and urban shapefiles [message #58561 is a reply to message #58547]

Fri, 01 February 2008 12:36

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

mcneel@neo.tamu.edu writes:

> I'm looking to add county and urban borders to some plots I'm
> producing for my graduate work (more specifically, the city limits of
> Houston and borders of the surrounding counties). Does anybody know
> where I can find these shapefiles and how I can implement them into my
> code?

Here is what comes up on a Google search for "Texas County Shapefile":

http://txsdc.utsa.edu/txdata/shapefiles/

I'd look for city shapefiles on the Houston city web page.
I'm always amazed at what is out there. :-)

Here is how you implement them into your code:

http://www.dfanning.com/map_tips/shapefile.html

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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