May I know the default tolerance of the ode45?

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SUNHAK KIM 2022-8-18

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回答： Torsten 2022-8-18

I want to know default tolerance of the ode 45.

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Dyuman Joshi 2022-8-18

Default values for ODE solvers -

Relative Tolerence = 1e-3

Absolute Tolerence = 1e-6

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Answer 1

Torsten 2022-8-18

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odeset
          AbsTol: [ positive scalar or vector {1e-6} ]
          RelTol: [ positive scalar {1e-3} ]
     NormControl: [ on | {off} ]
     NonNegative: [ vector of integers ]
       OutputFcn: [ function_handle ]
       OutputSel: [ vector of integers ]
          Refine: [ positive integer ]
           Stats: [ on | {off} ]
     InitialStep: [ positive scalar ]
         MaxStep: [ positive scalar ]
             BDF: [ on | {off} ]
        MaxOrder: [ 1 | 2 | 3 | 4 | {5} ]
        Jacobian: [ matrix | function_handle ]
        JPattern: [ sparse matrix ]
      Vectorized: [ on | {off} ]
            Mass: [ matrix | function_handle ]
MStateDependence: [ none | {weak} | strong ]
       MvPattern: [ sparse matrix ]
    MassSingular: [ yes | no | {maybe} ]
    InitialSlope: [ vector ]
          Events: [ function_handle ]