This Guide is broadly divided in three parts. The first three chapters are intended to get you started using the software. Chapters 4 through 10 cover the mechanics of building models with Vensim: how to draw diagrams, add equations, simulate and analyze models, and display output. Chapters 11 through 18 demonstrate some advanced operations in Vensim using existing sample models (which you can also build).
Chapter 1 provides an overview of this Guide and of Vensim including instructions for installing Vensim.
Chapter 2 introduces you to the Vensim User Interface. This chapter provides an overview of Vensim’s functionality, along with information on the Sketch tools, Analysis tools, and Control windows.
Chapter 3 provides hands-on experience simulating and analyzing an existing model.
Chapter 4 introduces you to the construction and use of causal loop diagrams. Structural analysis of diagrams using Analysis tools is also described.
Chapter 5 covers building stock and flow (Level and Rate) diagrams.
Chapter 6 steps you through the construction of a simulation model of the growth of a population. This problem helps you learn the mechanics of building, simulating, and analyzing models with Vensim.
Chapter 7 demonstrates the inclusion of functions in models and also shows how to detect and correct errors that occur during simulation.
Chapter 8 describes how to create and use Lookups. These are functions that relate an input to an output by drawing a graph of the relationship. They are also called Lookup Tables and sometimes just Tables.
Chapter 9 develops a model with multiple views, allowing you to split a model into different sectors. Vensim PLE users should skip this chapter.
Chapter 10 shows you how to customize output graphs from the Analysis tools. The Custom Graph and Table editors, with which you can create customized graphical and tabular output for multiple variables are also described.
Chapter 11 explains how to use models as games, or "flight simulators", where you can step progressively through time while making decisions at each time. Vensim PLE users should skip this chapter.
Chapter 12 shows how to make use of Input Output Controls and Navigation Links to make a model easier and more fun to use and present to others.
Chapter 13 presents SyntheSim and shows how it can be used to work with and understand models. The SyntheSim functionality is new to Vensim 5.
Chapter 14 covers the Reality Check feature in Vensim which allows you to build model validity tests.
Chapter 15 provides an example of Monte Carlo sensitivity testing. You set parameters with uncertainty values and then run sensitivity analysis to determine uncertainties in particular variables over the simulation time. Vensim PLE users should skip this chapter.
Chapter 16 describes how to use data in models. Data variables are defined which access exogenous time series and drive model behavior. This chapter covers importing data from text files and from spreadsheets. Not all functionality is available in Vensim PLE.
Chapter 17 introduces subscripted models (subscript or array variables in a model) and provides both simple and more complex examples. This chapter is applicable to Vensim Professional and DSS only.
Chapter 18 covers two types of model optimization. The first type is calibration of model constants while fitting model output to an external data series. The second is policy optimization, finding the best model parameters to maximize or minimize payoff variables. This Chapter is applicable to Vensim Professional and DSS only.
Chapter 19 gives directions and hints for making your model available to others using the Vensim Model Reader and other Vensim configurations.
Chapter 20 is an introduction to using reference modes as a way of conceptualizing feedback models and also as a means of testing and developing mental integration skills.
The Appendix provides information about resources available for learning more about building and using dynamic models.
Finally, Support and Licenses, provides information on getting support and training for Vensim as well as a reference copy of the license agreements.