Load CIN and external data

[apix]

Hi,

my Venapp interface let the user load a cin file to restore a previuos scenario.
When the cin file has been loaded, switchvars take the right values (super!) but external data doesn't get loaded (d'oh!)

What do you suggest me ? Should I write a note reminding to re-load external data after having loaded a cin file ?
Or there is an automatic way ?

Many thanks

[tomfid]

What is the symptom of data not getting loaded? Model won't run? Or ... ?

Can you post the code you're using?

[apix]

After having loaded the cin file and run the simulation, the outputs show that external data were'nt loaded.
Some variables have default values. Some policies let the user change such values by loading an external vdf file.
The outputs correspond to the default values, not to the data relative to the cin file.

[Administrator]

Can you try running

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SIMULATE>DATA|

and then loading your data files? It sounds like the default files are already loaded, so Vensim is getting data from those. This command will clear the list so you can use your own.

Tony.

[apix]

That means, I have to reset the data list, before loading the cin file?
With a void list of data, the cin file will load its own list, including the external data of the policy?

[Administrator]

Reset the data list before you read the CIN, and then use SIMULATE>DATA|datafile1.vdf to load the data you need to run the simulation.

[tomfid]

Can you post the code you're using? .cin and data statements shouldn't normally interact.

[apix]

I load data with

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SIMULATE>ADDDATA|?&SPECIAL>CLEARRUNS

(the clearruns command is necessary to not see the loaded data as a loaded run)
In fact, they don't interact, as I was afraid of.
When I load the cin file with

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SIMULATE>READCIN|?Changes file

, only Constants take the right values, while the external data are not restored.

My purpose was to let the user save the settings of a new scenario in order to complete the set up later. But the cin file is not the right way, if not all settings are restored.

Is there another way, supposed that the entire simulation requires too long?

[tomfid]

When you say "data" here, do you actually mean the history of decisions made in a previous simulation, rather than external data?

[Administrator]

Try

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SIMULATE>DATA|&SIMULATE>ADDDATA|?&SPECIAL>CLEARRUNS

Your call to "SIMULATE>ADDDATA|?" will add data files to an existing list. What you need to do is clear the list being used first, "SIMULATE>DATA|" will do that.