Experimental projection support
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Met.3D currently has experimental Projected grid and Rotated lon-lat grid support.
It is disabled by default.
You can enable it by compiling Met.3D from source with the cmake argument `-DEXPERIMENTAL_PROJECTION_SUPPORT`.


Rotated Grids
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Data specified on rotated longitude-latitude grids can be read by Met.3D and visualized.
Derived variables computed in Met.3D as well as feature detection features are not guaranteed to be correct though.


Projected Grids
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Data projected using proj4 can be read by Met.3D and visualized.
Derived variables computed in Met.3D as well as feature detection features are not guaranteed to be correct though.


Known limiations
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Derived variables are not guaranteed to function correctly, 
as some rely on delta-longitude or delta-latitude in their calculations, 
which is invalid for projected or rotated grids.

Horizontal cross-sections, Vertical cross-sections, Surface topography, and the Volume raycaster can correctly visualize projected or rotated grids. Direct volume cloud rendering may not be scientifically accurate in these cases, but can still be visually usable.

Other actors, particularly those that depend on smoothing or spatial derivatives, are not expected to work correctly. 
Trajectory visualization is also unsupported, since the integration does not account for grid projection.

Streambarbs and vector glyphs are supported and function correctly.