Ventana software support forum

Did some initial testing on a simple new model with a couple of variables and this seemed to work except for the zoom functionality. If I adjust the zoom in sketch mode I could see the number reflected in the '19:' parameter. However, if I was to then adjust the zoom value in an external text editor...

That's great. Many thanks!

Hi. We have a core template model which gets replicated for multiple regions and when we transfer it to each region we update the mdl text file for things like vdfx/cin paths, excel input files etc. Just wondering if there was a way to set a view by default within the mdl file (i.e. we always want i...

The example spreadsheet in the Vensim folder does this ("C:\Users\Public\Vensim\DDE\DDESERV.XLS") in conjunction with the example ball model ("C:\Users\Public\Vensim\Models\Sample\EXTRA\BALL.MDL"). You can start the connection (using the macro) and should get the DDE dialog box t...

Hi folks, We have been using DDE for a while now to interface between Excel and Vensim on a 32-bit system but when using it on the 64-bit version (DSS 8.06) it seems to crash Vensim. I can create the connection using DDEInitiate ok, but when passing a command using DDEExecute (e.g. SPECIAL>LOADMODEL...

Hi Folks, Investigating compiled versus non-compiled for our rather large energy model, and was noticing some output differences between compiled versus non-compiled. I managed to track it back to some equations that were using the VECTOR SELECT function which was using double subscript variables. E...

That's great news. Thanks.

Thanks a lot, those commands look like they could be a winner. For my understanding, when using results from another model run I need to export them as a *.DAT file first and then convert them to a vdf/vdfx to be read in as a data source (i.e. you cannot directly link to the results from another mod...

Hi Folks, Looking to understand what would be the recommended way to change a vdf input data source when interacting with a vensim package file using vensim_dll from Excel please. With Excel files, one can use the "SIMULATE>SPREADALIAS" command to change the input xls file (to use with say...

I have just found out that one of my colleagues has already been in touch with you separately and that they believe they have identified the issue. It appeared to be linked the function DELAY MATERIAL (input, delay time, initial value, missval). If the delay time is >5 then it seemed to crash the 64...

Hi folks, We are looking at potentially moving to 64-bit platform using Vensim (DSS v8.06) in conjuction with 64-bit versions of Win 10 and office 2016. One of our rather large and complicated energy models (which unfortunately I cannot post), that works fine in a 32 bit environment (Vensim DSS 7.2 ...

Two sample files are in the attached zipped file. One with time specified and the other where time period was not specified and has the zero offset for some variables. Also I should have mentioned in the first post that when exporting this manually this was using a list file where time is specified ...

Using the latest version of Vensim 6.4e DSS we are finding that when using the vdf2tab functionality as well as the manual export (manual -> export -> tab delimited) that some variables are being output offset by 1 year relative to the actual year if the time parameters are not specified. For exampl...

Thanks a lot, that is awesome. Love it when there is a smarter and more efficient way of doing the modelling. I definitely need to get my head around this vector elm map function as I imagine it should be able to simplify other parts of my model too! Many thanks again for your assistance. It is very...

Thanks for the suggestion. Tried that both linked and unlinked to the "additional logic" part and unfortunately still have the same "out of range in reorder" error message.

Thanks for looking at this. To simplify the mdl file that I posted, I pretty much stripped out all the input elements that feed into this section (i.e. all the get VDFs, get Excel function) and these are highlighted in orange and set to a constant 0. The only exception is the "Marginal SRMC&quo...

In order to optimise and reduce the computational and memory overhead of a fairly large hourly power generation dispatch model I am trying to separate some of the preprocessing calculations before the dispatch part of the model. In creating this smaller model I am finding that some of the logic whic...

Thanks for your help. Finally got the latest version installed on my PC and can confirm it has been indeed fixed.

Thanks
Dave

Thanks for the fast response. The current setting was set to "first" dataset already. I tried changing it to "2" and to "last" and in both instances it always loads as the last dataset. In other words, it appears to always load as the last dataset regardless of this set...

Since upgrading to version 6.3 of Venism DSS (x32), when running a new simulation the result appears to be last in the order rather than first (as in previous versions). I know you can go into the control panel and manually change this, but is there a system setting one can set to ensure that new ru...

Using Office 2010. But also tried Excel 2007 and Excel 2003. Same result for all three.

Thanks
Dave

Trying to use DDE to connect Excel to Vensim DSS on a windows 8.1 virtual machine (VM) which seems to hang Excel (specifically when you call DDEInitiate). I have no problems with the same VBA script (code reproduced below if needed) on a standard PC with windows 8.1 and vensim DSS. Also a previous i...

Many thanks for your advice and swift response. We operate only on windows PCs so a mac wasn't the likely cause but the article got me on the right track thinking re screen resolutions. We have just migrated to windows 8.1 and it seems this behaviour may be triggered if you change the default scalin...

We have a shared Vensim model file which multiple colleagues use. Recently, when the model is open it has started prompting to rescale the sketch. The prompt (see attached file) states "The current display scaling is different from the computer the model was last modified on". Is there a w...

It would be great if some of the analytical buttons are "sticky" (i.e. remain active) in a better way. For instance, for table and graphs you have the option of selecting "Activate on variable selection" after right clicking the button graph/table and going to options. However, t...