Resizing an uploaded image

[eluser]Stompfrog[/eluser]
Thanks very much for the code.

This is working well but is not quite what I was hoping to achieve.

With this solution if you have an initial image 600 x 300 and run your function it will produce an avatar of 60 x 30.

What modifications would I need to make so that the function generates a 60 x 60 undistorted square from the centre of the initial image.

I guess this would be a two stage process...

1) Make a centred 300 x 300 crop from the 600 x 300 image.
2) Resize the 300 x 300 to be 60 x 60.

How would that work using CI?