The Ordinary Differential Equation (ODE) toolbox is always included in the base version of Ecolego.

This ODE toolbox adds the following functionality to Ecolego:

• The compartment building block representing a dependent variable or state.
• The Transfer building block to model fluxes between compartments. Transfers can be linear, non-linear or discrete.
• The transport sub-system which allows you to approximate partial differential equations in one dimension.
• An extensive library of numerical solvers.
• Batch simulations

• Tutorial 2-Creating a compartment model
• Tutorial 7-Transport

• Ecolego Wiki