[Qgis-user] problems with layers from one source

[Gerardo Jimenez]

Hi

You have 

a layer in transverse mercator NAD83 / Illinois East (ftUS) (wards) (EPSG:3435)
Census are in Nad83 lat lon (EPSG:4269) (For testing purposes I downloaded all Illinois data not only Chicago)

I was able to reproject from 4269 to 3435 and they align perfectly. I noticed, for instance, that on North Lake shore drive, there is something called Magnificent Mile. Both layers share the feature and show it in the same position. This is what how I did it

a) Load the census data (epsg 4269)
b) Select the layer and choose "set project crs from layer". Make sure that te lower right corner says "EPSG 4269". This step is crucial. By default Qgis asummes that you are working on a lat lon WGS84 CRS, so before making a reprojection you have to have the proper CRS in the layer and in the project.
c) Select the layer and choose save as
d) On format, leave esri shape file
    on Save as, give a name that you can recognize
    on CRS choose the browse button and in the Projected coordinate Systems sections navigate to transverse mercator, NAD83 / Illinois East (ftUS) and choose it.
e) Choose OK
f) Define a new project and load both 3435 layers they should align. Look for the feature I mentioned before.

You can do the opposite from 3435 to 4269 the same way I described.

Hope it helps
 		 	   		  
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