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27 lines
1.0 KiB
Plaintext
27 lines
1.0 KiB
Plaintext
within ModelicaByExample.PackageExamples;
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package NestedPackages
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"An example of how packages can be used to organize things"
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package Types
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type Rabbits = Real(quantity="Rabbits", min=0);
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type Wolves = Real(quantity="Wolves", min=0);
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type RabbitReproduction = Real(quantity="Rabbit Reproduction", min=0);
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type RabbitFatalities = Real(quantity="Rabbit Fatalities", min=0);
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type WolfReproduction = Real(quantity="Wolf Reproduction", min=0);
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type WolfFatalities = Real(quantity="Wolf Fatalities", min=0);
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end Types;
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model LotkaVolterra "Lotka-Volterra with types"
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parameter Types.RabbitReproduction alpha=0.1;
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parameter Types.RabbitFatalities beta=0.02;
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parameter Types.WolfReproduction gamma=0.4;
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parameter Types.WolfFatalities delta=0.02;
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parameter Types.Rabbits x0=10;
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parameter Types.Wolves y0=10;
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Types.Rabbits x(start=x0);
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Types.Wolves y(start=y0);
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equation
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der(x) = x*(alpha-beta*y);
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der(y) = -y*(gamma-delta*x);
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end LotkaVolterra;
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end NestedPackages;
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