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- ode(y, times, func, parms, method, ...)

Parameter | Details |
---|---|

y | (named) numeric vector: the initial (state) values for the ODE system |

times | time sequence for which output is wanted; the first value of times must be the initial time |

func | name of the function that computes the values of the derivatives in the ODE system |

parms | (named) numeric vector: parameters passed to func |

method | the integrator to use, by default: lsoda |

Note that it is necessary to return the rate of change in the same ordering as the specification of the state variables. In example "The Lorenz model" this means, that in the function "Lorenz" command

```
return(list(c(dX, dY, dZ)))
```

has the same order as the definition of the state variables

```
yini <- c(X = 1, Y = 1, Z = 1)
```

- The Lorenz model
- Lotka-Volterra or: Prey vs. predator
- ODEs in compiled languages - a benchmark test
- ODEs in compiled languages - definition in C
- ODEs in compiled languages - definition in fortran
- ODEs in compiled languages - definition in R

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