Wow! It's along time since I've seen such an in-depth discussion. WTG guys!!!! This what the forum is all about. Now, having read most of the above I suddenly thought of something that could have a bearing on all of this. Some DEM files come in 3 parts. i.e.: 3 parts makes up one DEM region. The problem I had was with making them match up to create the complete region. Nothing seemed to work. Reading all this stuff from you guys gives me the idea that by tiling East, South, West or similar I may actually succeed. I'm not about to try this out yet, but I will when I get more time....that is....unless one of you guys wants to try it out for me.....!

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All the Woes of a World by Jonathan Icknield aka The Bryster

And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...