How to access estimated error in nonlinear adaptive variational solver

Question

I am using a nonlinear adaptive variational solver for a time dependent problem and would like to save the estimated error from each iteration and time step. I am using python. If I have named the solver as "solver" I can type solver.summary() and this will print out information about the error at each step which is useful but I would like to be able to plot the error. Is there a way to output the error information as a list I can save and then load to analyze later?

Answer 1

GenericAdaptiveVariationalSolver::adaptive_data() returns a list of Parameters objects. Example

data = solver.adaptive_data()
err = data[-1]['error_estimate']

Comments

why do I get an empty list data?

The error message is below:
print data[-1]['error_estimate']
IndexError: list index out of range.

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Would you please help me with the below problem, if you are convenient?
enter link description here
I want to solve the problem desperately.
Thank you very much!!!

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Would you please help me with the below problem, if you are convenient?
How to get convergence rate in adaptive poisson problem ?
I want to solve the problem desperately.
Thank you very much!!!