Ventana software support forum

Hi

Thank you, now it works, even if i do not know how.

Regards

JJ

Hi Joined a simplistic model that when loaded from the vensim set with the new gui, loads correctly, but once loaded it is impossible to switch to the old gui. If Vensim is open with the old gui set, it is impossible to load the same model. it opens it on the second view, and if one wants to go to t...

I have found the explanation. I have to switch to the old guy and the the text editor has a run Venapp option. But i had saved a model with the new guy. And if i try to open it with the old guy option, it shows an error. i have sent a report of the error to you. if i wand to open the model imus do i...

Hi.

Thank you for your answer.

There is no run option in the file menu in the Vensim text editor. I tried too the new text editor of the menu. It has no run either.

Regards.

JJ

Hi

I would like to run the venapp of the world model in the venapp directory of the Vensim\sample directory.

Regards.

JJ

Hi Travis Thank you for your help. I wil have to experiment and adapt the solution to my needs which are not know for the moment. For the moment i am just trying to run the world model as a Venapp in the venapp directory kof the sample directory with .vcd extension. Do you know how to do that? Best ...

Hi Travis! Do you mean that just by translating my simple model to Stella, without anything else, no server, no hosting, anybody with a web browser can use my model and be at the same time guided the same way that Venapp can guide an end user or course with a minimum of coding? Is it worth moving to...

Hi

I have found .vcd files, but i do not know how to run them.

Regards.

JJ

Hi I am trying fo learn the Venapp. But I am not able to run a simple Venapp application found in the Vensim documentation to see how it works by looking at the command script. Where can I find such a Venapp application? There are venapp files in the sample models repertory but I do not know how to ...

Hi Travis Thank you for your answer. I have no web site, and I wonder if there is a necessity to have one when using sdeverywhere. I need for the moment to allow users to use my models by guiding them starting with very simple models. I have no experience working with users, even if I have built com...

Hi Travis Thank you for your suggestions. In fact, i should use different methods, something that takes time, especially for me, having always worked for myself, and not having to manage the undestanding of other people, which seems to be the main difficulty of system dynamics and simulation in gene...

Hi Tom I do not need to create the architecture myself. I can find someone and pay him for that. I have already seen the Forio web site. I have two main drawbacks with using Forio. Forio has many proprietary features especially for the interface. Is it possible to work with Forio not using them and ...

Hi

Thank you very much.

JJ

Hi

Thank you for your answer!

Webspace from General electric?

JJ

Hi

I want to allow people to use models via the internet, eventually with fees.

What is the best way to do that.

thank you in advance.

JJ

Hi I think that it is possible to build useful models with SD and with that type of problems but not with the way that they are generally built, tested, analyzed, used and eventually implemented (very rarely). The behavior’ shape of the system predicted by the model is never compared with the real b...

Hi
It might be better to use the strict unit testing. If you use the strict unit testing two more errors will appear in both models. But I do not think that these errors have anything to do with your problem.
JJ

HI The COIN model discussed years ago in the SDS forum when it was still active, is for me a good example of an impressive model, that has no chance of ever being useful to anything or anybody except its author. Exposing the reasons would take me a time that I am no more ready to spend, because my e...

Hi Help yourself and heaven will help you. I took a look at your model. Several remarks. First there are no units in you model: a sign of a complete beginner in Vensim. Set the stricte unit testing on in the units equivalent window. Correct units is mandatory. Secondly! You should simplifiy your mod...

Hi Are you a researcher or are you working wth optimal control problems applied to real problems with planned implementation? In the second case, i use mainly dynamic programming methods (ref Bertsekas from MIT) and Vensim is very well adapted. If you are working on real cases to be implemented, we ...

Hi Tom Every time that a file is missing, one has to erase the folrmula with the get vdf and replace with :NA: or anything else, run the model to get the run and then get the get vdf formula back with the name of the run generated. This is cumbersome. What is the purpose of the actual design? it wou...

Hi

joined a model using get vdf data that generates an error if one uses an empty file. same is one uses the get vdf constants function.

Regards.

JJ

i think that the .ini file becomes big with the sim subscript put to 100000 and it first says that it cannot open it and then still opens it but it takes more time;

JJ

i have erase the get vdf variable. the downloading time stays the same with the sim subscript put to 100000.

JJ

I thinkthat it has to do with the subscript sim that is very large 100000. When i put it to 1000, it loads quickly again.

But the need to use the options stays.

JJ