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I have a base map image with micro regions, however in the attribute table there is no information regarding the long & lat. Is there a way I can create a long & lat for each micro region?


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up vote 1 down vote accepted

With ArcGIS 10.x you can 'calculate geometry' by going to the attribute table and right-clicking the field name. With polygon layers, you can calculate the x coordinate and y coordinate of the polygon's centroid by clicking next to Property. If you haven't already done so, you'll need to first add a new x_coord and y_coord field to the attribute table to hold the coordinate values.

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Thanks! Has made my task much easier than expected. – l.s Oct 19 '12 at 12:47
@Lauren Don't forget to accept one of the answers by clicking on the checkmark. – Rayner Oct 19 '12 at 13:48

I'm guessing based on the label that you're using ArcGIS 10. There's a "Calculate Geometry" feature which will allow you to do this. Full details and instructions here - Oh, and be sure to use either a Float or Double data type on the column you're going to put your lat/long into.

This will get you the centroid of the micro-regions.

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Thanks! It was much easier than I thought. – l.s Oct 19 '12 at 12:47

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