The Earth is kind of a sphere, definitely a 3D object (regardless of some challenges even this), whereas our printed maps and digital screens are 2D. The intermediate step that transforms the sphere into our 2D maps, whether or not it’s a cartographic atlas or a elaborate GIS app, is known as map projection.
There are quite a few methods to map the ellipsoidal floor of the Earth right into a flat floor; nevertheless, as these are approximative fashions, there often are some shortcomings we’d like to bear in mind. In some projections, relative angles and polygon (e.g., nation) shapes are preserved; in others, the actual space or particular Euclidean distances are saved fixed. These properties additionally assist you decide one of the best projection on your use case.
As for the varieties of projections, there are a number of methods, similar to cylindrical, conic, azimuthal, and pseudocylindrical projections. A sensible technique of reworking from each other is to vary the coordinate reference methods (CRS), the place Python and the libraries PyProj and GeoPandas got here in very helpful!
In keeping with Mathematics.com, there are six major classes of projection varieties:
Right here, I cannot observe such a strict categorization however reasonably present you 9 map projections that I assumed regarded attention-grabbing. Relying on the precise projection, these steps often end in distortion of form, space, distance, or path, so you need to select fastidiously when going for a real-life venture. For that, this collection of projection systems and my code offered beneath ought to assist. So, with out additional ado, the maps:
1. Eckert II Projection
Traits: The Eckert II projection is an equal-area pseudocylindrical projection. It preserves space accuracy however distorts shapes and distances.
Frequent Use: Moslty used for novelty maps of the world exhibiting a straight-line equal space…