Search found 6 matches

by MaxiKing
Mon Oct 21, 2019 9:08 am
Forum: Vensim
Topic: Data variables
Replies: 2
Views: 1579

Data variables

Hi, I am having the following issue: I have a dataset (vdf-file) which I want to use for 3 data variables. The data loads correctly into the 3 data variables (highlighted in red in the model attached). However, as soon as I try to do experimental runs I get the following error. "The variable- I...
by MaxiKing
Fri Sep 20, 2019 12:26 pm
Forum: Vensim
Topic: Uploading Data onto Vensim PLE
Replies: 27
Views: 32650

Re: Uploading Data onto Vensim PLE

Hi tomfid, sorry for coming back to this issue. I've tried to fix the lookup and also reread the help on lookups as well as the video on lookups (https://vensim.com/lookups-in-vensim/), however I am still lost here. I simply want to return the value of the lookup with the input time and use it in my...
by MaxiKing
Sat Sep 14, 2019 12:57 pm
Forum: Vensim
Topic: Uploading Data onto Vensim PLE
Replies: 27
Views: 32650

Re: Uploading Data onto Vensim PLE

Hi Tomfid,

Thanks for your quick reply.

Would you mind explaining how to solve this issue with another lookup in Vensim PLE? What kind of lookup?

Thank you!
by MaxiKing
Fri Sep 13, 2019 5:35 pm
Forum: Vensim
Topic: Uploading Data onto Vensim PLE
Replies: 27
Views: 32650

Re: Uploading Data onto Vensim PLE

Hi, I am having the same issue as Ich93lily. Vensim keeps telling me the following error: ERROR: The variable- FIT DATA -and perhaps others require a data file be specified. ERROR: Unable to correctly load in exogenous values - aborting. I compared my model to the revised model the administrator sen...
by MaxiKing
Thu Mar 22, 2018 6:51 pm
Forum: Vensim
Topic: Initialize stock in terms of parameter
Replies: 4
Views: 4082

Re: Initialize stock in terms of parameter

Hi!

Thanks for the answer. It would work like this. However, the population variable is a stock and as far as I know should not have polarity links pointing vom auxiliary variables to the stock. Is there another way I can make this work?

Thanks.
by MaxiKing
Thu Mar 22, 2018 7:57 am
Forum: Vensim
Topic: Initialize stock in terms of parameter
Replies: 4
Views: 4082

Initialize stock in terms of parameter

Hi! I am documenting the equation for a stock variable and want to initialize (set initial value) the stock based on another variable, specifically Total Population. I entered Total Population in the Initial Value box. However, whenever I click ok and want to close the functions tab Vensim keeps say...