Even better

The map function creates a set of numbers, then goes over that with what I've called a second pass.
The output is something that looks even better to me than simply the first pass method.

Tempted to implement another pass to see what that does.


I like the islands that appear in this one...












The block of land on the left hand side appears to be an artefact of some sort hidden in the code.  I can pretend that it's a peninsula of some sort that is meant to be there :)