hey folks -- so, I'm doing a bit of stretching here for the first problem I want to throw a GIS at, but I'm looking at putting a map-set for a fictional world together with the help of QGIS, but am stuck at a design problem -- most procedural terrain generators operate on uniform-distance-resolution (say 1m by 1m or 1km by 1km) heightmaps. How do I set up say QGIS to accept this sort of thing readily without breaking the ability to "stitch" maps together into a larger, coherent whole...

or backing myself into a corner such as "the maps only make sense if you assume the whole dang world is flat"?

(I've done a bit of background reading on geodesy and looked at the QGIS getting started stuff, but that's about it -- all my other GIS work has been as an end-user, not a cartographer)