Need Help following Dedgrens Square Map Tutorial

[greenbelt]

Please help.  I have not yet succeeded in making a square map.

1. saved image from Region Census program is 2986 x 1844  (c.p. Plymouth map)
2. opened saved image in GIMP and resized to 2000 x 2000.
                     ***unlocked aspect ratio, set to 150 ppi, etc, etc
                     ***Image Menu --> Scale Image
3.  rotated image -22.5
                     ***Tools Menu --> Transform Tools --> Rotate

Here is what I always end up with.  *sad*


the sides are not vertical the the top and bottom are not horizontal.  Any suggestions as to how to do this?

[vortext]

For those unfamiliar, this is the tutorial at hand. And like you, Greenbelt, I too got a far from perfect rectangle when following the steps precisely. My reasoning why is Davids measures and angles work only for that specific region, which happens to be a square to begin with. However, every region has different dimensions and length-width ratio so, long story short, you'll need to do a bit of trial and error. The steps outlined are correct, just fiddle with the rate of compression and rotation angle (iirrc I ended up with ~ 75% and ~26 degree). 

[greenbelt]

Thanks Vortex.  I will do some experimenting!