So I'm new to QGIS (3.4) and haven't touched any mapping software in 15 or more years. I'm slowly finding my way around but I'm currently struggling to create a generic coordinate system for a map project of a generic world as I'm not familiar with proj4 format. I've been going over proj4 but could sure use some help in getting started. My simple generic world is as follows:
The X axis currently extends from -2045 to 2045
The Y axis also from -2045 to 2045
Z is 0 to 1000
Each X,Y unit is a meter
All I need to do at this point is define a generic coordinate system that will allow me to map simple vector data - X,Y points and later lines. Eventually I may want to work with elevation as well.
I'm wanting (hoping) to use QGIS to make some simple maps of a fictional world that is flat, simply X, Y, and Z coordinates. Since the world is flat and not round, I don't really need a projection per se. I just need to specify that each X, Y, Z unit is a distance of 1 meter with the world extending 2,045 units each direction of a 0, 0 center point. So -2045 to 2045 X(east, west) and -2045 to 2045 Y(north, south). Also there is elevation (Z). So I need to figure out how to define a "projection" and then add vector features (points, lines, polygons) as simply as possible using X, Y, Z coordinates. Note; I won't be doing anything with elevation at this point but possibly later. I've never used QGIS and my last experience with any mapping software was some version of ArcView 3.X years ago so I'm flying blind here. I really just need to figure out how to specify my world and insert features with X, Y coordinates then make a map layout.