I have an absolute newbie question for #QGIS .

I want to create a map of a fantasy world within it. For that purpose, my first step is to import a bitmap of a world map I had generated elsewhere.

I did the import via

Layer->Add Layer->Add Raster Layer

However, what I fail at is telling QGIS:

"This image represents an equirectangular world map, so please scale it accordingly."

Can anyone walk me through this process? The image can be found at the link.

EDIT: Thanks to those who replied. Thanks to them, I was eventually find the right keyword (i.e. "Georeferencer") that helped me figure this out.

_HEIGHTMAP_COLOR_map.png

Google Docs (drive.google.com)