Vensim 6.0 released.

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Vensim 6.0 released.

Post by Administrator »

Vensim 6.0 is now available for download or purchase in the Vensim store.

Version 6.0 introduces a new look and new features.

- Interface Changes
- A new Equation Editor layout
- Improved Toolbars and Cursors
- Optimization Features
- Stochastic optimization : optimize over an envelope of Monte Carlo simulations
- Discrete constraints on optimization parameters, so you don’t waste time determining whether to build 2.6 or 2.7 factories.
- Extended payoffs with non-Gaussian errors, logarithms, and mixed calibration/policy variables.
- Markov chain Monte Carlo & simulated annealing
- Extended payoff report information with MAPE and Theil statistics

See for the full release notes, with a video introduction at

You can upgrade to the latest version of Vensim easily – just follow the Upgrade link at and enter your license code. Can’t find it? No problem – contact us for help.

If you're not current with 5.11, there are some interesting new features, including:

- Significant upgrades to the Help system, including improved indexing and nearly 100 sample models illustrating the use of almost every built-in function
- Native Mac support (licenses are portable across platforms)
- GET DIRECT functions that can access spreadsheets and other delimited data files, like the GET XLS functions without the overhead of launching Excel.
- The option of observing integer constraints in the ALLOCATE AVAILABLE function
- great for managing allocation of discrete items like customers or aircraft.
- Enhancements to the document tool and SyntheSim functionality with lookups in large models
- On-the-fly configuration of subscripts (arrays) with the GET DIRECT SUBSCRIPTS or GET ODBC SUBSCRIPTS functions
- great for matching model detail to your data.
- :EXCEPT: statements that let you handle exceptions to subscripted equations more easily.

The Vensim team is hard at work on the next great thing (stay tuned).

Advice to posters seeking help (it really helps us to help you) ... f=2&t=4391

Units are important!