Ventity 5.1 adds new features including Run Lists, Style Overrides, and options to hide run-time warnings. This version also supports the use of entities created during the simulation by sensitivity and optimization parameters. See the help for more details.
Video from the Ventana Systems vendor demo/user group session at the 2024 System Dynamics conference in Bergen. See also: the new workshop video.
Our workshop from ISDC 2024 in Bergen is recorded below. This introduces modeling in Ventity, using a simple project model. It features the basic operations needed to build and run a model, as well as highlighting references and attributes, and reuse of structure an data. A .zip archive containing materials is available here: Ventity Intro
Ventity 4.9.1 is now available from the download page (if you need a trial license) or the update page (if you don’t). 4.9.1 is a minor maintenance release that improves trapping and messages for generated code errors, fixes a file format issue with the 3D visualizer, and corrects a rare action issue. 4.9 is a
News on Vensim and Ventity from our User Group/Demo session at the 2022 System Dynamics Conference:
We’ve made our usual workshop content from ISDC 2022 permanently available on video. The latest is an Introduction to Ventity, featuring an interesting simple agent-based model: Materials and models used are in this archive: Ventity Intro – Agent.zip You may also be interested in other Ventity videos, particularly the shorter introduction in Doing Classic System
Release 4.8 is primarily an under-the-hood upgrade, with enhanced performance and functionality supporting use of large models in embedded systems. Contact us if this application is of interest. There are also bug fixes and minor usability improvements, including: Optimization setup improvements. Fix for issues with the undo/redo stack. Multi-slider interface improvements. Exclusion of system variables
This build contains a variety of improvements to interface and simulation engine components. New features include: · Circularity checking is now lest strict, to permit entitytypes to self-reference where hierarchies are useful, as in project or supply chain models. Potential circularities cause a user-controlled warning at compile time, and actual circularities cause a run-time error.
The Ventity 4.6 beta is primarily an under-the-hood performance enhancement, with a few bug fixes and feature improvements as well. The primary feature enhancements are to Process List actions, making it easier to restrict the number of iterations, and much faster to make small randomized selections from large entity collections. This version is stable in
Ventity 4.5 is now available for download or upgrade. There are some further performance improvements over 4.4, as well as a few critical bug fixes to the Initial() and DelayInformation() functions. A number of minor bugs have been fixed as well, including the occasional tendency of autocomplete to delete left parentheses when adding variables to
