Search found 1432 matches
- Wed Jan 04, 2023 3:21 pm
- Forum: System Dynamics Discussion
- Topic: help modelling
- Replies: 6
- Views: 8501
Re: help modelling
Hi When two variables have both an effect on another variables and these effects are independant from one another, the total effect is equal to the multiplication of both effects. But if the effects are not independant from one another then you must build a two dimension lookup. There was in the pas...
- Mon Dec 19, 2022 5:02 pm
- Forum: Vensim
- Topic: problem with a small model
- Replies: 1
- Views: 701
Re: problem with a small model
Hi
Joined three workarounds that seem to work correctly. i prefer the test3 or the test4 that are safer. the test 2 works but i am not sure in all circumstances.
Best
JJ
Joined three workarounds that seem to work correctly. i prefer the test3 or the test4 that are safer. the test 2 works but i am not sure in all circumstances.
Best
JJ
- Mon Dec 19, 2022 3:13 pm
- Forum: Vensim
- Topic: problem with a small model
- Replies: 1
- Views: 701
problem with a small model
Hi I have a model that behaves differently when one uses a simple simulation setting a parameter value with the set button, or is on uses the synthesim modifying the parameter value using its slider. I have included the model in vpmx format and two runs; the first run named current has the parameter...
- Thu Dec 08, 2022 5:30 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
Hi
I have found the 2019 version and now it works.
Thank you for your help.
JJ
I have found the 2019 version and now it works.
Thank you for your help.
JJ
- Wed Dec 07, 2022 3:55 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
Hi Thank you for your answer. I downloaded from your source and dwonloaded visual studio 2022, finding no 2019 version. Of course there are no files from the directories specified in the mdl;bat and of course it does not compile. When installing it did not ask me anything about c++ and no ticking wa...
- Tue Dec 06, 2022 3:12 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
I have tried to download the 2017 version but i could not find it in the microsoft web site. From where do you download the C++ 2019 compiler? It can be downloaded from different sources: from microsoft or elsewhere. I tried to download from microsoft where I am registered. Which version exactly you...
- Tue Dec 06, 2022 2:22 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
I reinstalled visual studio 2019. I did not find any question about the desktop after having unistalled the previous one. i did the same for Vensim that I uninstalled and installed again with a previous downloaded *.exe. i could not download anything from Vensim that toldk that i had alarady downloa...
- Wed Nov 30, 2022 4:43 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
Hi
i have erased the manual modifications of the environment variables.
How can I help.
I can go to the PC specialist who installed windows ans sold my computer for help. He is very keen and builds customized computers.
Regards.
JJ
i have erased the manual modifications of the environment variables.
How can I help.
I can go to the PC specialist who installed windows ans sold my computer for help. He is very keen and builds customized computers.
Regards.
JJ
- Wed Nov 30, 2022 8:31 am
- Forum: Vensim
- Topic: old sketch
- Replies: 5
- Views: 1105
Re: old sketch
Thank you for your help. I have found to set the old guy.
- Tue Nov 29, 2022 7:39 pm
- Forum: Vensim
- Topic: old sketch
- Replies: 5
- Views: 1105
Re: old sketch
i mean more place for the sketch, because the old guy used less place on the screen for the tools.
- Tue Nov 29, 2022 5:00 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
Question? What current version of the visual studio to you use? there are moany of them? I have gonne to the man who reinstalled windows 10 and he tried to install the compiler. Hefound that the CL.exe was not recognized because it was not recognized as an environmetnal variable; He then decalred th...
- Tue Nov 29, 2022 6:53 am
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
I think so. But I will reinstall visual studio.
- Mon Nov 28, 2022 6:00 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
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...
- Mon Nov 28, 2022 3:11 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
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.
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.
- Fri Nov 25, 2022 5:05 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
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
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
- Fri Nov 25, 2022 4:49 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
I suppose that the directory is where the messages are sent to.
- Fri Nov 25, 2022 4:46 pm
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
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 ...
- Thu Nov 24, 2022 2:27 pm
- Forum: Vensim
- Topic: old sketch
- Replies: 5
- Views: 1105
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?
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?
- Thu Nov 24, 2022 2:26 pm
- Forum: Vensim
- Topic: old sketch
- Replies: 5
- Views: 1105
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?
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?
- Thu Nov 24, 2022 11:51 am
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
Re: Compilation does not work
I cannot past the entire mdlde64. It sayt Error 446.
i sent it to vensim@vensim.com
i sent it to vensim@vensim.com
- Thu Nov 24, 2022 11:31 am
- Forum: Vensim
- Topic: Compilation does not work
- Replies: 22
- Views: 4559
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...
- 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: 1523
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...
- Sat Feb 19, 2022 6:39 pm
- Forum: Vensim
- Topic: another run about the problem exposed by Tom
- Replies: 0
- Views: 22122
another run about the problem exposed by Tom
the run is joined
- 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: 1523
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
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
- 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: 1084
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
JJ