https://docs.qgis.org/3.34/en/docs/training_manual/processing/no_data.html might be helpful for using QGIS to add two layers and a constant together....
You've got the general form down, but it's (as it almost always is) how the details are arranged. Looking at the example map, the initial thing that...
The most likely reason that the map seems sterile is that it seems to have no identifiable purpose. Is it for nagivation? Is it for illustration of a...
Oh, and, um, you don't need steel for gun barrels or lead for ammo. You'd be amazed what rope wrapped around hollowed-out logs pushing rocks out the...
Did you try contacting the author(s) of the papers? In my experience, most authors are happy to hear about uses of their work (even if they are in a...