Update benchmarks/linear-elastic-plate-with-hole/FEniCS/plateWithHoleSolution.py

update type hints

Co-authored-by: Sjard Mathis Rosenbusch <69848361+srosenbu@users.noreply.github.com>

Author: joergfunger

benchmarks/linear-elastic-plate-with-hole/FEniCS/plateWithHoleSolution.py

@@ -8,7 +8,7 @@ def __init__(self, E: float, nu: float, radius: float, L:float, load:float) -> N
         self.E = E
         self.nu = nu
 
-    def polar(self, x):
+    def polar(self, x: np.ndarray) -> np.ndarray:
         r = np.hypot(x[0], x[1])
         theta = np.atan2(x[1], x[0])
         return r, theta