Sequence of unknown parameters in solution

[Peter230655]

If I have, say, 4 unknown parameters c1, c2, c3, c4, I know, that the last 4 entries of solution contain them.
In which sequence would they appear?
Would it be in the sequence they appear in the eoms?
Thanks!

[moorepants]

I think all the variables are accessible in their order from the Collocator class.

[moorepants]

The dir() function will show all attributes and methods on any object in Python:

In [3]: dir(prob.collocator)
Out[3]: 
['__class__',
 '__delattr__',
 '__dict__',
 '__dir__',
 '__doc__',
 '__eq__',
 '__format__',
 '__ge__',
 '__getattribute__',
 '__getstate__',
 '__gt__',
 '__hash__',
 '__init__',
 '__init_subclass__',
 '__le__',
 '__lt__',
 '__module__',
 '__ne__',
 '__new__',
 '__reduce__',
 '__reduce_ex__',
 '__repr__',
 '__setattr__',
 '__sizeof__',
 '__str__',
 '__subclasshook__',
 '__weakref__',
 '_check_known_trajectories',
 '_discrete_symbols',
 '_discretize_eom',
 '_find_closest_free_index',
 '_gen_multi_arg_con_func',
 '_gen_multi_arg_con_jac_func',
 '_identify_functions_in_instance_constraints',
 '_instance_constraints_func',
 '_instance_constraints_jacobian_indices',
 '_instance_constraints_jacobian_values_func',
 '_integration_method',
 '_merge_fixed_free',
 '_multi_arg_con_func',
 '_multi_arg_con_jac_func',
 '_parse_inputs',
 '_sort_parameters',
 '_sort_trajectories',
 '_variable_duration',
 '_wrap_constraint_funcs',
 'current_discrete_specified_symbols',
 'current_discrete_state_symbols',
 'current_known_discrete_specified_symbols',
 'current_unknown_discrete_specified_symbols',
 'discrete_eom',
 'eom',
 'eval_instance_constraints',
 'eval_instance_constraints_jacobian_values',
 'generate_constraint_function',
 'generate_jacobian_function',
 'input_trajectories',
 'instance_constraint_function_atoms',
 'instance_constraints',
 'instance_constraints_free_index_map',
 'integration_method',
 'jacobian_indices',
 'known_input_trajectories',
 'known_parameter_map',
 'known_parameters',
 'known_trajectory_map',
 'next_discrete_specified_symbols',
 'next_discrete_state_symbols',
 'next_known_discrete_specified_symbols',
 'next_unknown_discrete_specified_symbols',
 'node_time_interval',
 'num_collocation_nodes',
 'num_constraints',
 'num_free',
 'num_input_trajectories',
 'num_instance_constraints',
 'num_known_input_trajectories',
 'num_known_parameters',
 'num_parameters',
 'num_states',
 'num_unknown_input_trajectories',
 'num_unknown_parameters',
 'parallel',
 'parameters',
 'previous_discrete_state_symbols',
 'show_compile_output',
 'state_derivative_symbols',
 'state_symbols',
 'time_interval_symbol',
 'time_symbol',
 'tmp_dir',
 'unknown_input_trajectories',
 'unknown_parameters']

[Peter230655]

I did not know this. Works perfect!!

[moorepants]

You can open an issue, all of the public attributes and methods should be shown in the sphinx docs, which is currently not the case.

[moorepants]

If you didn't know dir() then you may not know about tab completion in IPython or Jupyter. If you type:

prob.collocator.<tab>

where <tab> is the tab key on your keyboard, IPython/Jupyter will display all public methods and attributes.

[Peter230655]

If you didn't know dir() then you may not know about tab completion in IPython or Jupyter. If you type:

prob.collocator.<tab>

where <tab> is the tab key on your keyboard, IPython/Jupyter will display all public methods and attributes.

I definitely did not know this!