@AlchemistDaggerI kinda feel the same, got a few time lost in editor while working on a map!
I helped myself out with a little trick, in "Generate New Terrain" -> "Refresh Preview" i generated the mini map, then (am on windows here) i hit alt+print, then into paint/photoshop, there ctrl+v to paste, then cut out the minimap and resize it to 500% and voila i had some kind of a map. It's maybe not the best resolution, but at least i can compare the coastline...