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Message: [QUOTE="kerrymaid, post: 4164024, member: 70451"] Hi, I have a defined area (I know the x,y coordinates of each corner of the area). I need to hash an ID (int or char array) to an x,y point confined within that boundary area. The resulting hashed value i.e. x,y co-ordinates need to be unique to the ID and preferably I don't want the x,y points clustered all in one part of the square but rather evenly distributed over the square. Any advice about how I can go about this? Many thanks in advance. [/QUOTE]