[Award Winner] Using GIMP to Create an Artistic Regional RPG Map

[Viper]

RobA,

While I have you...perhaps you can help with another question. I have been following along with your 4-part tutorial on land making and I am stuck on a section in part 2; the Mountains area...as follows:

Now we want to create a heightfield from this. The easiest way I have found to do this is to copy the current visible image (B|Edit->Copy Visible)/B then paste it (CTRL-V) to
a floating selection. Click the New Layer button to get it on its own layer rather than a
floating layer. Now stretch the colour range out (B|Color->Auto->Normalize)/B:

My question: Are you saying to copy the image to a new file and then pasting from the new file back into the original one?

Thanks!

Viper