Hi I already post a forum about pcb footprints placing  easy method..and a gentleman answerd to use XY coordinates It's a bit easier to placement of mouuse placement... But I need help agin any math formula to place at once all footprints  if there are 10 or more than 10000 footprints.. if script is to do so .. please if anyone has acopy of full script command any else I don't know how to explain. .. actually I don't know about Json scripting.. My question is round about to find each component 's placement coordinates. . Thanks please reply