Software that meets specific technical needs in manipuation of projection and display

[RobA]

Here is the exact same thing done completely in gimp...using the polar/rectangular filter on each hemisphere.
x.png
I was hasty in selecting the initial squares (or the source is off as waldonrate states).

And I'll throw in the sphere, too, also vanilla gimp.
x_sphere.png
-Rob A>

[Snargash Moonclaw]

How did you do this? I'll be checking into the tutorial - but as I said above, I don't really even know the basics of the GIMP and what it can do. I'm currently struggling just to cut the two polar projections out into separate circular image files which I can blow up to fit a standard page and print.

Here is the exact same thing done completely in gimp...using the polar/rectangular filter on each hemisphere.
x.png
I was hasty in selecting the initial squares (or the source is off as waldonrate states).

And I'll throw in the sphere, too, also vanilla gimp.
x_sphere.png
-Rob A>