You never can have enough sources on this topic. Here are
SharpGIS - Spatial references, coordinate systems, projections, datums, ellipsoids – confusing?
People are often mixing the above as if they were one and the same, so here’s a recap of them. One of the things you often find people saying is that “my data is in the WGS84 coordinate systemâ€. This doesn’t really make sense, but I will get back to this later.
If you feel like ending a conversation with a developer then simply bring up the topic of character encodings.
Also:
- A JavaApplet that demonstrates different map projections.
- The Spatial References website, which lists projections information in various formats.
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