Note
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LFRic LAM Mesh (Projected)#
This example demonstrates how to render a projected unstructured quadrilateral mesh.
π Summary#
Creates a mesh from 1-D latitude and longitude unstructured cell points.
The resulting mesh contains quad cells and is constructed from CF UGRID unstructured cell points and connectivity.
It uses a high-resolution Local Area Model (LAM) mesh of air potential temperature data located on the mesh faces/cells.
Note that, a Natural Earth base layer is rendered along with Natural Earth coastlines, and the mesh is transformed to the Mollweide pseudo-cylindrical projection.
from __future__ import annotations
import geovista as gv
from geovista.pantry.data import lam_pacific
import geovista.theme
def main() -> None:
"""Plot a projected LFRic LAM unstructured mesh.
Notes
-----
.. versionadded:: 0.1.0
"""
# Load the sample data.
sample = lam_pacific()
# Create the mesh from the sample data.
mesh = gv.Transform.from_unstructured(
sample.lons,
sample.lats,
connectivity=sample.connectivity,
data=sample.data,
)
# Plot the unstructured mesh.
crs = "+proj=moll"
plotter = gv.GeoPlotter(crs=crs)
sargs = {"title": f"{sample.name} / {sample.units}", "shadow": True}
plotter.add_mesh(mesh, scalar_bar_args=sargs)
plotter.add_base_layer(texture=gv.natural_earth_hypsometric())
plotter.add_coastlines()
plotter.add_axes()
plotter.add_text(
f"CF UGRID LAM ({crs})",
position="upper_left",
font_size=10,
shadow=True,
)
plotter.view_xy()
plotter.camera.zoom(1.5)
plotter.show()
if __name__ == "__main__":
main()