Sunday, 6 March 2016

PostGIS spatial reference ID (SRID) for regular cartesian coordinate system?


I would like to store a polygon as a set of 2D points represented as x, y coordinates of a Cartesian coordinate system.


Which spatial reference can I use? Looking at my spatial_ref_sys table, all the spatial references seem to be geography related.


The points of the polygon would represent satellite measurements which I would invoke ST_ConvexHull on to get the shape of the satellite footprint.




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