Ventana software support forum

Good to know. Thanks for your assistance

This works great for batching, except all subset simulations start from 1 to the end specified. Just wondering if there is a way to serially do the runs: say first subset = run 1- run 500, second subset = run 501- run 1000 etc, using the .vsc file. Thanks

Okay, greatly appreciate it. I will try that. Thanks,

I have gone through the manual trying to implement Monte Carlo in a batch mode. In a normal Vensim Monte Carlo simulation, after specifying the range (min-max) values for parameters of interest, the model automatically samples from this space during each run. Now in a batch mode using the command sc...

Thanks a lot. I will look into the scripting for running in a batch mode then. Kind regards

I am running a huge number of simulations and wanted to view the results, say on another computer before the simulation ends.

Dear All,

Is there a way to view sensitivity run results while model is running? Also,is it possible to run Vensim Monte Carlo simulation in a batch mode?

Thanks

Okay thanks

Okay thanks for the reply. I tried that, but the issue I had was with respect to the arguments. The function has the arguments "GET DIRECT DATA( {'filename'} , {'tabname'} , {'time_row_or_col'} , {'first_data_cell'} )". In the text file, how do I reference ,tabname, time row or col, and fi...

Dear All, I have a number of time series data in a text file that I want to use to drive my model model. My plan had been to import the data and create a vdf file from which I would use the 'GET VDF DATA' function to get the data. I am forced to import from a text file because Excel cannot be instal...

Okay thanks a lot

Let VENSIM read the numbers rather than the dates

If you are using GET DATA function to import the time series data, then this is the cause. VENSIM does not recognize excel dates. A way I found around this is: in the model settings select a base date (when time =0) to correspond to a date prior to the first date in your excel. Then number the dates...

Are you reading any time series data from excel?

The model time is in Model>Settings>Time Bounds The data time horizon will be in your spreadsheet. Model and data time units have to match. Excel dates generally won't work, because internally they are a number representing the days elapsed since Jan 1 1900. Thanks tomfid. I am having similar issue...

Thanks a lot tomfid, I tried and works just fine. I really appreciate.
Kind regards

Okay thanks

The fact that these subscripts are all the same size suggests to me that you really just need a single dimension: Catchment : (c1-c2222) or something like that. As is, if you write variable[ManureN,FertN] it will have over 4 million elements, which can be done, but quickly bogs things down. So, I t...

Okay, so please how do I use the equivalence relations for the subscript?

Thanks a lot tomfid, I think that would work, I will try it and let you know.

Okay thanks. The model estimates nutrient exported from agricultural catchment. These nutrients are total nitrogen (TN and TP) highlighted yellow in the model. The model uses catchment properties such as fertilizer applied to the farm, manure from cattle, soil permeability, catchment slope, stream l...

Please find attached the model

Would be glad if I could attach the model, but basically, the 13 subscripts represent landscape processes for about 2000 plus land units

Thanks tomfid for the reply. My main output variable actually has about 13 variables.

Please I am trying to modify an existing model in VENSIM DSS which initially had subcatchment (upto about 2000 plus) processes modelled using lookup tables and time function. I want to use subscripts instead as I want to utilize the time function for dynamic processes within the model. I realized th...