How do I specify convergence criteria while using PDE Toolbox from a script? (R2017a)

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Sarojeet Deb
Sarojeet Deb 2018-2-5
回答： Ravi Kumar 2018-2-14
The legacy workflow had properties that could be used in pdenonlin function. How can I set the convergence and Jacobian solution parameters in R2017a?

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Ravi Kumar
Ravi Kumar 2018-2-14
Hi Sarojeet,
You can access same controls in the new workflow as a property of the model. You can directly set them by assigning new values, which would replace the default values.
For example, if you have created a model named, myNonlinerProblem, then you can see the defaults as:
>> myNonlinerProblem.SolverOptions
ans =
PDESolverOptions with properties:
AbsoluteTolerance: 1.000000000000000e-06
RelativeTolerance: 1.000000000000000e-03
ResidualTolerance: 1.000000000000000e-04
MaxIterations: 25
MinStep: 1.525878906250000e-05
ResidualNorm: Inf
ReportStatistics: 'off'
One thing that you could do in legacy and not do in new workflow is setting the Jacobian option, by default the new solver used full-Jacobian.

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