If you are using DIH, is just doing (for a mysql project I have around for example) something like this:
CONCAT(lat, ',',lon) as latlon -- View this message in context: http://lucene.472066.n3.nabble.com/Solr-4-0-Spatial-Search-schema-xml-and-data-config-xml-tp4020376p4020437.html Sent from the Solr - User mailing list archive at Nabble.com.
