Ventana software support forum

Thank you, Bob! I am working in continuous time so I'll use DELAY CONVEYOR.

Is there any reasonable way to initialize a "DELAY FIXED" variable to an arbitrary function of time? Right now it appears that all previous values from 0 thru -Delay Time are just initialized to the third argument, which must be constant. Of course one can drive the simulation up to a give...

Well, I usually get a few floating point errors during optimization, which seems to be benign (although I wish someone would confirm this!). Occasionally I get one which causes the optimizer to quit, however (and I have no idea what the difference between them is). Right now, however, I am most perp...

I'm doing an optimization with the double precision version of vensim, and it sometimes (not always) dies with "ERROR: The computed value (3.60256e+038) for - xyz - out of bounds. Truncated. ERROR: Floating point error preparing data for storage Trying to save results anyway." And it gets ...

Is there any way to do this? I would like my clients to see the same colors and fonts that I set for my graphs in vensim, but the reader evidently does not get them from the model and I cannot see any way to change its defaults.

Yes, of course if I want to reset all the initial values there'd be no reason to do a resume! What I'm actually trying to do is to find a set of constant and initial values that starts a simulation reasonably near to a steady state, which it seems to eventually settle into almost no matter where I s...

Thank you, that is much clearer than the reference manual was! I have found, however, that the initial conditions for levels are not reset to the values in the ".cin" file on resuming a run, even if they were specified as separate constant variables in the model which are reset in the &quo...

I am trying to use the simulation control tab to resume a run, by setting the "based on" field to an existing data set, clicking the "resume" button and leaving the time blank, which the reference manual says should cause it to resume from the end of the previous run. If that had...

yes, that works now; thanks! (whoever you may be)

Here's an even sillier question: In what window should I select them? There's nothing to select in the Tabletool control panel, and ordinarily one uses it by selecting a variable in the sketch window, where only the name of the variable is shown but not its subscripts, and then clicking the table ic...

I am trying to display as a table the elements of a 2-D array, by clicking the "2d Subscripting" button on the Tabletool control panel as described on page 306 of the VENSIM reference manual, but only the upper-right-hand (or (1,1) if this were fortran) element is displayed. Does anyone kn...