Search found 5 matches

by brianbirgen
Wed Oct 09, 2019 9:18 pm
Forum: Vensim
Topic: Negative Levels
Replies: 6
Views: 2780

Re: Negative Levels

Oops! No my mistake. It was RK4 that was dropped back in 2011, but quickly brought back.

Brian Birgen
by brianbirgen
Wed Oct 09, 2019 9:16 pm
Forum: Vensim
Topic: Negative Levels
Replies: 6
Views: 2780

Re: Negative Levels

Euler Method was dropped about seven years ago, but quickly brought back. That was a long time ago.

Yes, I figured out the problems I was having were removed in version 8.0.4. Sadly the 8.0.3 was the version installed on all the campus computers.

Brian Birgen
Wartburg College
by brianbirgen
Wed Oct 09, 2019 6:57 pm
Forum: Vensim
Topic: Negative Levels
Replies: 6
Views: 2780

Re: Negative Levels

Apparently this was a problem with version 8.0.3, but it has gone away, so all I need to do is update my software.

Wow! You solved my problem before I even asked it. That is awesome!

Brian Birgen
Wartburg College
by brianbirgen
Wed Oct 09, 2019 6:47 pm
Forum: Vensim
Topic: Negative Levels
Replies: 6
Views: 2780

Re: Negative Levels

I downloaded the latest version of this to test it on my own machine (rather than the machine in the classroom) and the problem has gone away. When the classroom is available I will check to see if an older different version is installed on those computers.

Brian Birgen
Wartburg College
by brianbirgen
Wed Oct 09, 2019 6:36 pm
Forum: Vensim
Topic: Negative Levels
Replies: 6
Views: 2780

Negative Levels

I have been using VenSim PLE for about ten years now in teaching a Modeling Calculus course. This is a course in which we teach Euler's method and Runge-Kutta and modeling with differential equations. Every now and then a new feature is added to the software that causes some small problems I need to...