sdsim: sdsim: System Dynamics Simulator for Models of Initial Value...

In EmbrapaInformaticaAgropecuaria/sdsim: System Dynamics Model Simulator for Initial Value Problems of ODE

Description

R6 classes that represents atomic and coupled system dynamics models, static models, scenarios (variables and values that constitute a system environment) and the simulation output. Two or more atomic, static or coupled models can be coupled to form a more complex model, that enables communication between it's components during simulation. A function to simulate system dynamics models; a wrapper around the ode solver from the deSolve-package that solves the initial value problem of first-order ordinary differential equations (ODE) that specifies a model definition. A function to build a coupled scenario from two or more component scenarios of a complex system. Functions to help in the auxiliary and/or algebraic equations definition and in the transformation of the time series variables into temporal functions. All the sdsim package functionalities for atomic system dynamics models are available in a intuitive graphical user interface application built with the shiny web application framework.

Author(s)

Adauto Mancini, Bruno H. Pereira, Cristina F. Bazzano & Luis Barioni

See Also

sdsim Functions:

sdRunApp for launching the sdsim application for atomic models; a shiny server interface,

sdModel for creating an atomic system dynamics model object,

sdStaticModel for creating a static system model object,

sdCoupledModel for creating a coupled system dynamics model object,

sdLoadModel for loading a model from a sdsim XML file or from the sdsim repository, see available models in sdRepository,

sdScenario for creating a system scenario object (it represents the variables and values that constitute a system environment and that are used to compute the equations of a model),

sdLoadScenario for loading a scenario from an EXCEL or XML file and sdExcelTemplate for creating an empty template for a sdsim scenario EXCEL file,

sdBuildCoupledScenario for creating a coupled scenario from two or more component's scenarios of a coupled model,

sdSimulate for solving static, atomic or coupled models in a given scenario merged with the defaults. Runs the simulation and outputs the result in a sdOutput object with visualization methods,

sdInitEquations for creating a list of sorted equations from a list of R-expressions and/or strings with the equations in R-format,

sdTemporalFunction for interpolating input time series variables. It is automatically used in the scenario initialization, see sdScenarioClass documentation. Can be used to test how the interpolation will happen and prevent the output of wrong values.

EmbrapaInformaticaAgropecuaria/sdsim documentation built on May 10, 2019, 9:58 a.m.