Search found 1421 matches

by LAUJJL
Wed Oct 18, 2023 2:36 pm
Forum: Vensim
Topic: impossible to switch back to the old gui a model built with the new guide
Replies: 19
Views: 14096

Re: impossible to switch back to the old gui a model built with the new guide

Very sad new for me, that you will retire the old gui. i tried t use the new gui. Building a model with the new gui, triple my building time.
I will try to keep the present version as long as possible.

JJ
by LAUJJL
Wed Oct 18, 2023 9:34 am
Forum: Vensim
Topic: impossible to switch back to the old gui a model built with the new guide
Replies: 19
Views: 14096

Re: impossible to switch back to the old gui a model built with the new guide

Fortunately this is the only model that cannot be switched to the old guy and cannot be loaded when the old gui is on. All the models work correctly. I suppose that something happened when building the model with the new gui on. Anyhow finding the old gui much more practical, i wolk now only with th...
by LAUJJL
Mon Oct 16, 2023 3:22 pm
Forum: Vensim
Topic: impossible to switch back to the old gui a model built with the new guide
Replies: 19
Views: 14096

Re: impossible to switch back to the old gui a model built with the new guide

If I open your model in the download repository, it works fine and I can switch tp the old gui, but if i download the model joined, it generates again an error if Venim is set in the old gui. I am obliged to set Vensim in the new guide, to be able to load the model, And once loaded in the new gui, i...
by LAUJJL
Mon Oct 16, 2023 2:59 pm
Forum: Vensim
Topic: impossible to switch back to the old gui a model built with the new guide
Replies: 19
Views: 14096

Re: impossible to switch back to the old gui a model built with the new guide

Hi

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

Regards

JJ
by LAUJJL
Sun Oct 15, 2023 4:06 pm
Forum: Vensim
Topic: impossible to switch back to the old gui a model built with the new guide
Replies: 19
Views: 14096

impossible to switch back to the old gui a model built with the new guide

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...
by LAUJJL
Tue Oct 10, 2023 9:29 am
Forum: Vensim
Topic: finding a simple Venapp application in the Vensim documentation
Replies: 6
Views: 658

Re: finding a simple Venapp application in the Vensim documentation

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...
by LAUJJL
Sun Oct 08, 2023 3:56 pm
Forum: Vensim
Topic: finding a simple Venapp application in the Vensim documentation
Replies: 6
Views: 658

Re: finding a simple Venapp application in the Vensim documentation

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
by LAUJJL
Sat Oct 07, 2023 9:14 am
Forum: Vensim
Topic: finding a simple Venapp application in the Vensim documentation
Replies: 6
Views: 658

Re: finding a simple Venapp application in the Vensim documentation

Hi

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

Regards.

JJ
by LAUJJL
Sat Oct 07, 2023 9:11 am
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

Re: best way to build a server for clients via the internet

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 ...
by LAUJJL
Fri Oct 06, 2023 5:42 pm
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

Re: best way to build a server for clients via the internet

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...
by LAUJJL
Fri Oct 06, 2023 3:29 pm
Forum: Vensim
Topic: finding a simple Venapp application in the Vensim documentation
Replies: 6
Views: 658

Re: finding a simple Venapp application in the Vensim documentation

Hi

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

Regards.

JJ
by LAUJJL
Fri Oct 06, 2023 1:08 pm
Forum: Vensim
Topic: finding a simple Venapp application in the Vensim documentation
Replies: 6
Views: 658

finding a simple Venapp application in the Vensim documentation

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 ...
by LAUJJL
Fri Oct 06, 2023 1:01 pm
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

Re: best way to build a server for clients via the internet

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...
by LAUJJL
Thu Oct 05, 2023 3:33 pm
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

Re: best way to build a server for clients via the internet

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...
by LAUJJL
Wed Oct 04, 2023 9:21 am
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

Re: best way to build a server for clients via the internet

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 ...
by LAUJJL
Tue Oct 03, 2023 3:48 pm
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

Re: best way to build a server for clients via the internet

Hi

Thank you very much.

JJ
by LAUJJL
Tue Oct 03, 2023 8:35 am
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

Re: best way to build a server for clients via the internet

Hi

Thank you for your answer!

Webspace from General electric?

JJ
by LAUJJL
Tue Oct 03, 2023 1:42 am
Forum: Vensim
Topic: best way to build a server for clients via the internet
Replies: 14
Views: 947

best way to build a server for clients via the internet

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
by LAUJJL
Sun Jul 30, 2023 5:11 pm
Forum: Vensim
Topic: Reverse engineering
Replies: 3
Views: 498

Re: Reverse engineering

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...
by LAUJJL
Sun Jul 30, 2023 1:07 pm
Forum: Vensim
Topic: Units Check whack-a-mole
Replies: 9
Views: 1110

Re: Units Check whack-a-mole

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
by LAUJJL
Sun Jul 30, 2023 10:20 am
Forum: Vensim
Topic: Reverse engineering
Replies: 3
Views: 498

Re: Reverse engineering

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...
by LAUJJL
Tue Jun 27, 2023 8:41 am
Forum: Vensim
Topic: optimization
Replies: 12
Views: 3916

Re: optimization

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...
by LAUJJL
Mon Jun 26, 2023 9:51 am
Forum: Vensim
Topic: optimization
Replies: 12
Views: 3916

Re: optimization

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 ...
by LAUJJL
Thu Mar 09, 2023 5:47 pm
Forum: Vensim
Topic: get vdf data and get vdf constant does not work if the file is empty
Replies: 2
Views: 768

Re: get vdf data and get vdf constant does not work if the file is empty

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...
by LAUJJL
Thu Mar 09, 2023 4:31 pm
Forum: Vensim
Topic: get vdf data and get vdf constant does not work if the file is empty
Replies: 2
Views: 768

get vdf data and get vdf constant does not work if the file is empty

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