I regularly fill in the "Location" field in my metadata for my photos on import (along with city and state). Now I would like to use this info to assign the location in "Places".
Is there a way to do this without going through the entire library manually?
OR to put it another way, is it possible to use the data in the Location field of your metadata to assign location in Places?
Thanks very much!
Note: someone else with better inf. may speak up. What's below is my just my "knowledgeable user's" take on your question.
The location field you've been filling out on import is most like the one that is in the "Image" section of the IPTC core. It's just a text field (it has no "smart" data). That text field has (afaik) no bearing at all on how Aperture's Places feature works.
Places works with the Image-level metadata fields "Latitude" and "Longitude". It adds an additional layer to that, which allows you to specify an Aperture-only name to an area that encompasses the lat/long of any Image.
You can assign Places by Project (via the Project Info pane ("View→Window→Show Project Info"), or to all selected Images via "Metadata→Assign Location".
You might be able to write some kind of Applescript which takes the "City" and "State" metadata you've been filling out, and generates and fills the lat/long fields. (I think it is possible; I don't know how to do it.)