Search found 1421 matches

by LAUJJL
Tue Nov 29, 2022 6:53 am
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Re: Compilation does not work

I think so. But I will reinstall visual studio.
by LAUJJL
Mon Nov 28, 2022 6:00 pm
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Re: Compilation does not work

Hi I have found the CL.exe file in 4 directories listed below. C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\bin\Hostx64\x86 C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\bin\Hostx64\x64 C:\Program Files (x86)\Micros...
by LAUJJL
Mon Nov 28, 2022 3:11 pm
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Re: Compilation does not work

Hi

After the compilation fails, Vensim says 'failed to compile the model (does not exist)'.

the other warnings are in the echos of the command file I joined.
by LAUJJL
Fri Nov 25, 2022 5:05 pm
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Re: Compilation does not work

Hi

I have verified again the paths asked in the batch file. Evenrything is OK and the VsDevCmd.bat file exists.
the only thing that I cannot verify is the '-arch=amd64' at the end of the call. i do not know what it means.

Regards.
JJ
by LAUJJL
Fri Nov 25, 2022 4:49 pm
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Re: Compilation does not work

I suppose that the directory is where the messages are sent to.
by LAUJJL
Fri Nov 25, 2022 4:46 pm
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Re: Compilation does not work

Hi Tom Thank you for your reply. I put the echo on in the batch file and this is the answer. Compiling Vensim model ... C:\nouveau rent\Simple_135>REM Comment out the ECHO statement if you need more information for debugging paths. C:\nouveau rent\Simple_135>REM C:\nouveau rent\Simple_135>REM First ...
by LAUJJL
Thu Nov 24, 2022 2:27 pm
Forum: Vensim
Topic: old sketch
Replies: 5
Views: 1050

Re: old sketch

Hi

Is it possible to switch the sketch to the oldest presentation that was in used some years before and used less place, allowing more place for the model equations?
by LAUJJL
Thu Nov 24, 2022 2:26 pm
Forum: Vensim
Topic: old sketch
Replies: 5
Views: 1050

old sketch

Hi

Is it possible to switch the sketch to the oldest presentation that was in used some years before and used less place, allowing more place for the model equations?
by LAUJJL
Thu Nov 24, 2022 11:51 am
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Re: Compilation does not work

I cannot past the entire mdlde64. It sayt Error 446.
i sent it to vensim@vensim.com
by LAUJJL
Thu Nov 24, 2022 11:31 am
Forum: Vensim
Topic: Compilation does not work
Replies: 22
Views: 4229

Compilation does not work

Hi My computer crushed and I had to reinstall Windows 10 and all my applications; i downloaded the latest DSS version and installed it. i installed too a new version of the 21019 C++ compiler (Visual studio 2019). When i ask to compile it tells me that the compilation failed and that i have to check...
by LAUJJL
Sun Feb 20, 2022 5:03 pm
Forum: Vensim
Topic: model about the staircase elevator problem exposed by Tom in the facebook forum
Replies: 2
Views: 1424

another better model about the staircase problem

Hi A better version 6 that adds the calculation of the resting time in the elevator, especially if the starting time of the rest is close to the end of the climbing the elevator. It renames too most of the auxiliaries to initials, which is clearer. It calculates as initial the total time spent, show...
by LAUJJL
Sat Feb 19, 2022 6:39 pm
Forum: Vensim
Topic: another run about the problem exposed by Tom
Replies: 0
Views: 17409

another run about the problem exposed by Tom

the run is joined
by LAUJJL
Sat Feb 19, 2022 6:34 pm
Forum: Vensim
Topic: model about the staircase elevator problem exposed by Tom in the facebook forum
Replies: 2
Views: 1424

model about the staircase elevator problem exposed by Tom in the facebook forum

HI
Here is th model joined.
if somebody does not understand it, just ask.
I could not upload the published model?
i download the .mdl


JJ
by LAUJJL
Wed Feb 02, 2022 11:36 am
Forum: Vensim
Topic: two models explaining how to correct some errors found in the world3 model
Replies: 1
Views: 986

Re: two models explaining how to correct some errors found in the world3 model

A slight change in both models, to avoid an unit errors in the mortality 0 to 14 using the stricte unit error.
JJ
by LAUJJL
Sun Jan 30, 2022 7:13 pm
Forum: System Dynamics Discussion
Topic: Population Model
Replies: 6
Views: 6409

Re: Population Model

the population model is very approximative and does not resist to extreme conditions tests. For example, if the births are set to constant 0 with the synthesim starting at year 1900 and the final time set to 2200. 8 % of the initial population is still in life 200 years later. It comes from the fact...
by LAUJJL
Sun Jan 30, 2022 7:11 pm
Forum: System Dynamics Discussion
Topic: Population Model
Replies: 6
Views: 6409

Re: Population Model

HI
In Vensim, the deaths arrow is going outward and not inward and the loop is still balancing like in your CD.
by LAUJJL
Thu Jan 27, 2022 9:58 am
Forum: System Dynamics Discussion
Topic: Population Model
Replies: 6
Views: 6409

Re: Population Model

joined a simplistic population model. You can vary with the sysnthesim the average lifetime and the average fertility or the initial population and see what happens. JJ
by LAUJJL
Thu Jan 27, 2022 9:26 am
Forum: System Dynamics Discussion
Topic: Population Model
Replies: 6
Views: 6409

Re: Population Model

Hi The deaths loop is a balancing loop and the births one is a reinforcing loop. Balancing loops do not necessarily need a goal. If the population is increasing the births are increasing as the deaths do, but births are added and deaths are subtracted to the population and this makes the difference ...
by LAUJJL
Thu Jan 27, 2022 8:34 am
Forum: System Dynamics Discussion
Topic: Population Model
Replies: 6
Views: 6409

Re: Population Model

Hi
Can you post a vensim model that can be run, to illustrate your ideas with concrete runs. Regards. JJ
by LAUJJL
Mon Jan 24, 2022 6:18 pm
Forum: Vensim
Topic: two models explaining how to correct some errors found in the world3 model
Replies: 1
Views: 986

two models explaining how to correct some errors found in the world3 model

Hi

I have uploaded some corrections from the models included in a topic of the discuss forum of the system dynamics society web site started by Jack Jarich. I choosed to upload these two Vensim models here not being able to upload them in the discuss forum.
Best regards.
JJ
by LAUJJL
Mon Oct 11, 2021 9:09 pm
Forum: Vensim
Topic: Sub-model: working model and graphical presentation of sub-model connection?
Replies: 6
Views: 2936

Re: Sub-model: working model and graphical presentation of sub-model connection?

Yes, you have to make the connections by yourself between the main model and the submodels and it will then work. JJ
by LAUJJL
Thu Oct 07, 2021 1:55 pm
Forum: Vensim
Topic: sub-sub-submodekls
Replies: 2
Views: 1737

Re: sub-sub-submodekls

One of the main interests (at least for me) is to split a big model into smaller ones to make it easier to test them. Unfortunately, you can only test the sub-models mathematically, testing that there is no equation error. The problem comes from the necessity to find a value for some variables that ...
by LAUJJL
Thu Oct 07, 2021 12:06 pm
Forum: Vensim
Topic: sub-sub-submodekls
Replies: 2
Views: 1737

sub-sub-submodekls

Is it possible to have multiple levels of sub models?
by LAUJJL
Sat Oct 02, 2021 10:15 am
Forum: Vensim
Topic: an unchangeable constant when saved in a .cin file generates an error when running a model with the .cin file
Replies: 3
Views: 1990

Re: an unchangeable constant when saved in a .cin file generates an error when running a model with the .cin file

Hi When i set a constant as unchangeable it is just not to change it and not that it appears as changeable when setting the run. So i know that a unchangeable constant cannot be changed and I do not want to change it in any circumastances. in my model joined there is constant named const and set as ...
by LAUJJL
Sat Oct 02, 2021 9:31 am
Forum: Vensim
Topic: an unchangeable constant when saved in a .cin file generates an error when running a model with the .cin file
Replies: 3
Views: 1990

an unchangeable constant when saved in a .cin file generates an error when running a model with the .cin file

Hi the problem was already occuring with 9.0 DSS version. I downloaded the latest version and the problem is still there; I join a simplistic model with one unchangeable constant and its associated .cin file. whe one runs the model an error is reported. This happens with any model with unchangeable ...