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numpy.isnan

Python. Called in 3 tutorials; each line below leads to its place in the tutorial.

ToolPythonIntermediate

Devito from the ground up: a seismic shot over a buried reflector

print(f"dt = {dt_try} ms: NaN in the record: {np.isnan(rec.data).any()}")

ToolPythonIntermediate

Maps with Cartopy: a sea-surface temperature anomaly and its stations

ToolPythonIntermediate

findiff.PDE with mixed boundary conditions: seepage under a dam

print(f"{caught[0].category.__name__}: {caught[0].message}; every node NaN: {np.isnan(h_wrong).all()}")