Declare time symbol explicitly.

csu-hmc · May 11, 2024 · 8bb61e0 · 8bb61e0
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diff --git a/examples-gallery/plot_betts2003.py b/examples-gallery/plot_betts2003.py
@@ -76,6 +76,7 @@ def obj_grad(free):
                known_parameter_map=par_map,
                known_trajectory_map={T(t): time},
                instance_constraints=instance_constraints,
+               time_symbol=t,
                integration_method='midpoint')
 
 # %%

diff --git a/examples/vyasarayani2011.py b/examples/vyasarayani2011.py
@@ -81,6 +81,7 @@ def obj_grad(free):
     # The midpoint integration method is preferable to the backward Euler
     # method because no artificial damping is introduced.
     prob = Problem(obj, obj_grad, eom, (y1, y2), num_nodes, interval,
+                   time_symbol=t,
                    integration_method='midpoint')
 
     num_states = len(y)