Update example to also use dist2 function

Author: sorenhauberg

examples/local_pca_mnist.py

@@ -66,6 +66,11 @@ def get_subset_mnist(n: int = 1000):
 C, success = DM.connecting_geodesic(p0, p1)
 C.plot()
 
+t = torch.linspace(0, 1, 100)
+with torch.no_grad():
+    print(DM.curve_length(C(t)))
+    print(DM.dist2(p0, p1).sqrt())
+
 # p = C.begin
 # with torch.no_grad():
 #     v = C.deriv(torch.zeros(1))