Presenting a work in progress, the screenshot pretty much explains the goals of this mod. this is not to compete with minimap. I'm hoping that slope, aspect and elevation can some day be incorporated into the biomes or plantlife... also this mod complements some other mods I am working on such as realterrain.
https://github.com/bobombolo/gis
list of GIS analysis I hope to include in this mod: elevation, slope, aspect, water, watersheds, viewsheds, minerals, vegetation, harvestable lumber, hillshade, etc.
planned features: exporting to image file. performing spatial queries to locate spots that meet criteria such as slope < 30 AND aspect within 10 degrees of 180 AND within 200 nodes of water.
please don't waste your time telling me how slow the map load is. I am drawing in the formspec with thousands of 1x1 pixel images. The other aspects of this mod are what interest me and when minetest core finally allows dynamic image loading (at least in formspec) and exposes some image handling methods this hack will quickly be replaced...