I’m going say the information that I have for the Korean theater coordinates are off. I’ve run through a whole lot of projections and the 123, 33.84 :: 133, 43.84 coordinates just aren’t cutting it. Even while plotting down over 30 individual coordinates, I still ended up with beyond repair edges.
Was about ready to throw in the towel when I noticed that after some adjustments I had made to the Latitude coordinates N/S was pretty much spot on at 33.84 to 43.0 something, don’t remember off hand where I wrote it down. Now this is the interesting part because each lat are roughly 111km apart (I know it varies) 1024/111 gives us 9.225. So, I adjusted the long’s to 132.22 (the 5 was truncated) and voila, I now have a Korea that is only 1-4 pixels off throughout the entire theater. Well, except for Japan but it appears that Japan was an after thought and is not accurately represented in this this theater. That doesn’t matter though, I can always extract it separately. With the consistent variation across the theater I can now run through a few different projections that will hopefully align it the rest of the way.
So my assumption currently is that the SW corner of the theater really is somewhere around 123; 33.84 but the other corners were calculated to end at 1024km from that point. Ideally I’d want to calculate what those other corners should be but at least I’m in the ballpark range now. Been a long day so that’s all for now.
Or they were calculated from a center coordinate, I don’t know but you get the idea.