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I want to create a simple, custom projection in proj4. I need it to be completly flat ( rectangular coordinates ). Starts in point (0,0), meters as unit, everything else - as simple as possible. What parameters my definition should have to achieve it?

Am I even able to do it? Ignoring the curvature of the Earth?

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    It might help if you can explain what you are really trying to achieve ("why"). In general, we use proj to transform and project points. What would a meaningful conversion look like in your case? I'd guess you are just looking for a false easting and false northing of 0,0. – BradHards Mar 25 at 9:51
  • I need a projection for fictional, flat world (not real one), but I still want to be able to use all GIS tools, so I want a proper coordinate system somehow defined – Mativane Mar 25 at 10:01
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    So you don't really want to project it, you just want a coordinate system (EPSG number or similar) works in your tools? If so, its sometimes called an engineering coordinate system - epsg.io/5806 is an example, epsg.io/5807 is in metres if that helps. – BradHards Mar 25 at 10:06
  • Perhaps you are right, as I'm not very experienced in that matter. Is there any place where I can read more about engineering coordinate systems in general? – Mativane Mar 25 at 10:17

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