Hi I have 2 vectors (each one is a square) that are not over-imposed and I need to merge them in a single file/vector. How can i do that? Thanks Antonio __________ Information from ESET NOD32 Antivirus, version of virus signature database 5454 (20100916) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com