Non-Uniform Grids and Triangular Mesh Conversion
GEODESIC grid used in the examples on this page is non-uniform
grid. It is better to convert this grid to a triangular mesh
rather than interpolate it to a uniform grid before
contouring. Note that only contouring is available with triangular
mesh conversion at this time.
If the input array to a gsn_csm graphical interface is one dimensional, NCL
automatically uses triangular mesh conversion. The lat/lon information must
be provided by setting:
to the model's grid_center_lat/lon converted to degrees.
are set the model's grid_corner_lat/lon converted to degrees.
The second image shows the structure of a GEODESIC grid, along with its