Sensitivity analysis using the file option in a subscripted model

[niyousha@vt.edu]

How to run sensitive analyses using the file option when the model is subscripted? I get errors when using subscripted parameters.

[Administrator]

What errors are you getting?

[tomfid]

What error are you seeing?

I'm guessing that you're putting varname[range] in the headers. I don't think that works - you need to provide a separate column for each varname[element].

[niyousha@vt.edu]

This is the error:
Bad constant-"FracDWI[Male.Age15]" in file MCMC4.txt.

[niyousha@vt.edu]

What error are you seeing?

I'm guessing that you're putting varname[range] in the headers. I don't think that works - you need to provide a separate column for each varname[element].

Yes, I inserted the varnames like fracDWI[Male,Age15] in the headers (in a separate column for each of them). How they should be entered?

[Administrator]

Male.Age15 cannot be a correct subscript for Vensim, any subscript elements with a "." need to be quoted.

So the correct syntax would be
FracDWI["Male.Age15"]

[Administrator]

Or try the following, replace the "." with a ",".
FracDWI[Male,Age15]

[niyousha@vt.edu]

Male.Age15 cannot be a correct subscript for Vensim, any subscript elements with a "." need to be quoted.

So the correct syntax would be
FracDWI["Male.Age15"]

sorry for the typo. I used [Male,Age15].
The model is fine; the only problem is when I use sensitivity analyses using the file option. I have separate columns for my parameters in the text file. For example fracDWI[Male,Age15], fracDWI[Male,Age16],...

I am not sure how the headers should be changed to run the sensitivity analysis using the file option.

[Administrator]

If you can upload what you have, we can take a look.

[Administrator]

Maybe the best thing to do is get a simple example working using the sensitivity wizard, that will give you a working file that you can then edit using a text editor.

[niyousha@vt.edu]

If you can upload what you have, we can take a look.

I used a simple version (parameters without any subscript) and I did not get any error. As soon as I add a parameter with subscript, I get error.

I would like to share my text file that I use in my sensitivity analysis but the attachment cannot be a text file so I am attaching an excel file that I use to convert to text.

[tomfid]

When I save this as tab-delimited text, Excel quotes the column headers like
"fracDWI[Male,Age15]"
This is a nonstandard behavior, because quotes are not needed when the delimiter is tab (only csv).

Unfortunately this is not legitimate quoting in Vensim (the subscript brackets should not be included).

A quick search/replace of the text file to delete the " should solve the problem.

[tomfid]

Another option is to copy-paste the file:

https://superuser.com/questions/206060/ ... out-quotes

[niyousha@vt.edu]

When I save this as tab-delimited text, Excel quotes the column headers like
"fracDWI[Male,Age15]"
This is a nonstandard behavior, because quotes are not needed when the delimiter is tab (only csv).

Unfortunately this is not legitimate quoting in Vensim (the subscript brackets should not be included).

A quick search/replace of the text file to delete the " should solve the problem.

Thank you Tom. Editing the text file (deleting " that excel generated and extra spaces) resolved the problem. Thanks for your help.