Coordinate system and 2D projection

The shape of earth is mainly represented by an oblate spheroid or ellipsoid or a geoid. Imagine the earth as an orange (not a perfect shape). To project the earth on a plane and get a 2D projection of the world, the orange has to be peeled and unfolded.



When peeling the orange and laying the result on a table (projecting), there will be cracks and distortions. Different ways of projecting the orange will lead to different types of distortions at different places of the earth.



Choosing the coordinate system (datum and 2D projection): 

  • The distortions are locally minimized.
  • The correct measurement unit is selected (meters, feet).
  • The results are aligned with GIS data from other sources.


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  • Espen Dueland Jacobsen



    can not find euref89 ntm sone7 in pix4d.

  • Holden (Pix4D)

    Hi there. I looked up this CS and it looks like the EPSG code may be 5107 ( check to confirm the EPSG then just set the output CS with the EPSG code. 

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