Mathematics

Changing DDE Integration Properties

The default integration properties in the DDE solver dde23 are selected to handle common problems. In some cases, you can improve solver performance by overriding these defaults. You do this by supplying dde23 with an options structure that specifies one or more property values.

For example, to change the relative error tolerance of dde23 from the default value of 1e-3 to 1e-4,

1. Create an options structure using the function ddeset by entering

• options = ddeset('RelTol', 1e-4);
  

2. Pass the options structure to dde23 as follows:

• sol = dde23(ddefun,lags,history,tspan,options)
  

For a complete description of the available options, see the reference page for ddeset.

Discontinuities

Boundary Value Problems for ODEs

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