New answers tagged gis-principle
I don't think you get what the problem is at all. The problem is that the earth is curved; It isn't an sphere; It's not an oblate spheroid, it an even more complex shape, called the Geoid. And whenever you try to go from this Curved shape to a flat plane (like the paper you are talking about) you will have some or the other distortions. That is why ...
If you build a local transverse mercator CRS where lon_0 and lat_0 is in the center of your scene, you will have true distances within 5 kilometers: +proj=tmerc +lon_0=7 +lat_0=51 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +towgs84=0,0,0,0,0,0,0 +no_defs It should work in the ARCGIS world just the same.
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