PyNGL vector_map with irregular grid

I am using the PyNGL interface for this problem.

I'm trying to figure out how to make a vector/map plot
(Ngl.vector_map) with the output of a finite element model. The lon,
lat, u, and v are 1-d arrays, with each element corresponding to a
node in the mesh. According to the documentation of Ngl.vector_map,
the u and v (and presumably lon and lat) need to be 2-d arrays. My
mesh has irregular triangle elements and the boundary is also
irregular (has a real coastline, etc.), so it's not clear how to turn
u, v, etc. into 2-d arrays.

Can anyone point me in the right direction?

Thanks,

Tom

-- 
Thomas J. Shay
UNC Chapel Hill
tshay_at_email.unc.edu
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