Changing Y-Axis direction

Hello,

Is it possible to flip Y-Axis direction without affecting X and Z directions.

image insted of image

I couldn’t find a way with either Rhino app manually or with RhinoCommon

Thanks

Not that I know of - that would make it a ‘left handed’ coordinate system…

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To echo Hevetosaur Rhino uses a right hand coordinate system. The direction of the z axis is determined by the directions of the x and y axis.