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Added support for azimuthal_equidistant projection #485

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@maartenplieger maartenplieger commented Jul 2, 2025

A file for the DESTINE Floodmind project did not work with adaguc-server. It seemed azimuthal_equidistant was not supported.

Added it, including a test. Refactored the method a little bit.

A netcdf file with the following metadata is now supported:

	long azimuthal_equidistant ;
		azimuthal_equidistant:grid_mapping_name = "azimuthal_equidistant" ;
		azimuthal_equidistant:longitude_of_projection_origin = 174.700000df ;
		azimuthal_equidistant:latitude_of_projection_origin = -41.200000df ;
		azimuthal_equidistant:earth_radius = 6370997.000000df ;
		azimuthal_equidistant:false_easting = 0.000000df ;
		azimuthal_equidistant:false_northing = 0.000000df ;
		azimuthal_equidistant:autogen_proj = "+proj=aeqd +lat_0=-41.200000 +lon_0=174.700000 +k_0=1.0 +x_0=0.000000 +y_0=0.000000 +a=6378140.000000 +b=6378140.000000 " ;

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