I am attempting to find the coordinates associated with the Traffic Analysis Zones from this survey.

When I open it in QGIS it shows up on the sidebar as a point, not a block, and when I open the shapefile in R it gives coordinates like this:


       [,1]    [,2]
0    2406734 1631930

1    2433452 1626985

2    2447257 1617579

3    2391080 1621358

4    2420945 1617582

5    2373529 1616181

6    2410228 1612591

Here is a link: http://www.surveyarchive.org/

Column: Raw Data, Row: Atlanta, then click on 2011

Also, I've realized it doesn't come with a .prj file. Is there a fix for this?

closed as unclear what you're asking by Spacedman, nmtoken, whyzar, xunilk, Jochen Schwarze Sep 5 '18 at 18:40

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  • 1
    Hi there. I have just downloaded the data as described and when I open the file in QGIS, I am presented with 1 shapefile in the directory called "taz", opening this file I am presented with a polygon shapefile with approximately 2024 records. Please could you expand your question describing exactly what you did? – Keagan Allan Sep 4 '18 at 23:30
  • 1
    I can make those coordinates show up in northeast Georgia using NAD83 State Plane Georgia West zone (US feet) (EPSG:2240). They don't match the statewide definitions I know about, nor UTM. – mkennedy Sep 4 '18 at 23:39

The taz.shp looks like this in my QGIS

enter image description here

So the data are there but the download site does not seem to tell in which coordinate referance system the coordinates are. I would try if people announced on the Contacs page could help.

  • Assigning EPSG:2240 (as given by mkenndy) to the shapefile seems to put it in the right place. – AndreJ Sep 5 '18 at 6:32
  • Hey guys I was able to get in contact with those that created the TAZ and the coordinate system was NAD83 like user mkennedy said. – Sam Tucker Sep 5 '18 at 19:40
  • @SamTucker pease mark the answer as accepted. – AndreJ Sep 6 '18 at 10:00

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