Search found 53 matches

by rob_n
Mon Apr 17, 2023 1:25 pm
Forum: Ventity
Topic: Documentation bug?
Replies: 2
Views: 7253

Re: Documentation bug?

Ahem, 4.9.1.
by rob_n
Mon Apr 17, 2023 1:22 pm
Forum: Ventity
Topic: Documentation bug?
Replies: 2
Views: 7253

Documentation bug?

Hi, Playing with Ventity 9.4.1 View > Equations > Export. While I really like .xlsx layout of the documentation, I notice that some of the Descriptions that I've added are missing! In particular, it appears all rows with an empty Element value are missing Description fields too. For example, if you ...
by rob_n
Fri Apr 14, 2023 1:58 pm
Forum: Ventity
Topic: Unable to determine the winner of an election process
Replies: 16
Views: 12747

Re: Unable to determine the winner of an election process

This works great. Thanks, Tom!
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Picture1.png (42.97 KiB) Viewed 12423 times
Picture2.png
Picture2.png (44.86 KiB) Viewed 12423 times
by rob_n
Wed Apr 12, 2023 6:41 pm
Forum: Ventity
Topic: Unable to determine the winner of an election process
Replies: 16
Views: 12747

Re: Unable to determine the winner of an election process

I love this example. In Tom's example model, a Person's Value varies between 1 and 0. We can think of the extremes as pro/con, right/left, red/blue, etc. The change function has the tendency to "polarize" the population, as evidenced by the thinning out of the middle quintiles. Picture1.pn...
by rob_n
Mon Jul 04, 2022 8:57 pm
Forum: Vensim
Topic: Disenabling automatical adjustments of clear boxes?
Replies: 6
Views: 1943

Re: Disenabling automatical adjustments of clear boxes?

Vension 9.3 fixed the problem for me Many thanks!
Best regards,
Rob
by rob_n
Sun Jul 03, 2022 12:00 pm
Forum: Vensim
Topic: Disenabling automatical adjustments of clear boxes?
Replies: 6
Views: 1943

Re: Disenabling automatical adjustments of clear boxes?

I can confirm I see the same behavior on Vensim 9.2.4 on PC and Mac. I create a new test file as below on left. When I close and reopen Vensim, I see the figure as below on right: Picture1.png Sometimes the bounding box has no height at all (shadow variables? I haven't yet reproduced the conditions)...
by rob_n
Mon Feb 28, 2022 5:23 pm
Forum: Vensim
Topic: Tools > Options > Sketch > Font
Replies: 3
Views: 1440

Re: Tools > Options > Sketch > Font

Thanks, Tom!
by rob_n
Mon Feb 28, 2022 5:17 pm
Forum: Vensim
Topic: Control Panel > Custom Graphs
Replies: 2
Views: 1079

Control Panel > Custom Graphs

Hi, I'm running Vensim 9.2 Mac. When I have the Control Panel docked and the list of graphs in the Custom Graph tab appears to refreshed only when tab is opened. For example, if the Custom Graph tab is open when I make a new custom graph, the graph graph does not appear among the list! I have to clo...
by rob_n
Mon Feb 28, 2022 5:04 pm
Forum: Vensim
Topic: Tools > Options > Sketch > Font
Replies: 3
Views: 1440

Tools > Options > Sketch > Font

Hi, I'm running Vensim 9.2 Mac. In the new Sketch, going to Tools > Options > Sketch to change the default font. I can pick a new font, but there is no way to save it! Only option is "Close". Going back to Tools > Options > Sketch confirms that the change did not stick. It is sufficient to...
by rob_n
Thu Dec 23, 2021 3:39 pm
Forum: Vensim
Topic: Change Special Time in Synthesim?
Replies: 3
Views: 1425

Re: Change Special Time in Synthesim?

One way to hack this is to use the Control Panel to set Special Time = FINAL TIME, and then make a Synthesim slider for FINAL TIME. But that seems defeat the concept of Special Time to examine a slice of a full simulation...
by rob_n
Thu Dec 23, 2021 3:29 pm
Forum: Vensim
Topic: Change Special Time in Synthesim?
Replies: 3
Views: 1425

Change Special Time in Synthesim?

Hi, I've created a custom bar chart (saved in .vgd file). I know how to hard-code the display time, e.g. with :BAR-TIME, and that if this command is omitted the graph uses the Special Time. (See https://www.vensim.com/documentation/24010.html?q=BAR-TIME) I know that a way exists to change Special Ti...
by rob_n
Thu Dec 16, 2021 9:21 pm
Forum: Vensim
Topic: Simultaneous equations involving: (array element)
Replies: 3
Views: 1621

Re: Simultaneous equations involving: (array element)

Nice! Working sample code attached.
Best regards,
Rob
by rob_n
Thu Dec 16, 2021 5:28 pm
Forum: Vensim
Topic: Simultaneous equations involving: (array element)
Replies: 3
Views: 1621

Simultaneous equations involving: (array element)

Hi, I'm trying to do some feedback-like math in an array dimension. Using subscript mapping it is straightforward to calculate the accumulation of an array. But when I try to do something like a first-order exponential smoothing I get a “Simultaneous equations” error. Two similar blocks of code: Blo...
by rob_n
Sat Jun 05, 2021 2:31 pm
Forum: Vensim
Topic: model calibration
Replies: 4
Views: 3313

Re: model calibration

Fifteen years later, is there still no way to combine lines and dots in a custom graph?
by rob_n
Mon May 10, 2021 2:19 pm
Forum: Vensim
Topic: Best practice to avoid data warnings?
Replies: 9
Views: 11682

Re: Best practice to avoid data warnings?

Good thought! But unfortunately no. Viewing the model as text (so as to grab the syntax exactly), then copy and paste into a .cin file: :C Constant file for B Const B = 0 ~ unit ~ comment | Running the model gives the following errors: ERROR: FILE:B.cin, line 3 : Bad line in file, not recognized. ~ ...
by rob_n
Mon May 10, 2021 12:04 pm
Forum: Vensim
Topic: Best practice to avoid data warnings?
Replies: 9
Views: 11682

Re: Best practice to avoid data warnings?

Following up, I tested whether a "recognizable value format" would work, like Vensim code: ERROR: FILE:B.cin, line 2 : Too many values or unrecognizable value format. Const B = 2 ~ units ~ comment |. ------------^. The alternative in-line comment with curly braces also throws a warning. ER...
by rob_n
Sun May 09, 2021 9:15 pm
Forum: Vensim
Topic: Best practice to avoid data warnings?
Replies: 9
Views: 11682

Re: Best practice to avoid data warnings?

Jumping on this thread, how can we avoid errors when reading in .cin files with comments? Vensim help says anything after a tilde (~) in a .cin file is a comment. See: https://www.vensim.com/documentation/cin_files.html This is useful to indicate the units of the constants, for example. But the tild...
by rob_n
Sat Feb 13, 2021 6:59 pm
Forum: Vensim
Topic: Passing string constants through a data file
Replies: 13
Views: 6336

Re: Passing string constants through a data file

Here's the second .cin file
by rob_n
Sat Feb 13, 2021 6:57 pm
Forum: Vensim
Topic: Passing string constants through a data file
Replies: 13
Views: 6336

Re: Passing string constants through a data file

I get basically the same result.

I should have mentioned that the .cin file for my test had three elements. Only the element in the .cin file but not in the model causes the error. Sample model and both .cin files attached.

Best regards,
Rob
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Picture2.png (745.7 KiB) Viewed 6293 times
by rob_n
Sat Feb 13, 2021 4:56 pm
Forum: Vensim
Topic: VECTOR SELECT unweighted units
Replies: 2
Views: 1741

Re: VECTOR SELECT unweighted units

Erratum:
for numerical_action = 1, the units check should be
units(Result) = PROD(units(selection_array*expression_array))
for numerical_action = 7, the units check should be
units(Result) = PROD(units(expression_array))

But you get the idea
by rob_n
Sat Feb 13, 2021 4:53 pm
Forum: Vensim
Topic: VECTOR SELECT unweighted units
Replies: 2
Views: 1741

VECTOR SELECT unweighted units

Hi, I'm using VECTOR SELECT to perform SUM and VMIN type calculations on large matrices. Say Result = VECTOR SELECT(selection_array, expression_array, ..., numerical_action, ...), Units checking appears to look for units(Result) = units(selection_array)*units(expression_array). This is correct when ...
by rob_n
Sat Feb 13, 2021 4:15 pm
Forum: Vensim
Topic: Passing string constants through a data file
Replies: 13
Views: 6336

Re: Passing string constants through a data file

Administrator wrote: Fri Feb 12, 2021 8:58 pm
rob_n wrote: Fri Feb 12, 2021 5:42 pmBut when I pass the string constants in the .cin files, I get errors for all the subscripts that are no longer defined.
Are they errors or warnings? We changed the behaviour some time ago so that if an error was encountered, you could still contine.
The messages are errors.
Picture1.png
Picture1.png (749.94 KiB) Viewed 6311 times
by rob_n
Fri Feb 12, 2021 5:42 pm
Forum: Vensim
Topic: Passing string constants through a data file
Replies: 13
Views: 6336

Re: Passing string constants through a data file

The application is supply chain for raw materials. There are ~1600 finished goods, and ~7300 raw parts. Since the FG and raw part names are long and awkward, I'd rather define subscript names in a convenient way, FG : (f1-f600) and part: (r1-r7300) Since I cannot remember what part number r4545 is, ...
by rob_n
Fri Feb 12, 2021 4:52 pm
Forum: Vensim
Topic: Passing string constants through a data file
Replies: 13
Views: 6336

Re: Passing string constants through a data file

Here are two example models that show the problem.
by rob_n
Fri Feb 12, 2021 4:50 pm
Forum: Vensim
Topic: Passing string constants through a data file
Replies: 13
Views: 6336

Passing string constants through a data file

Hi, I can pass string constants through a .cin file. But when I am interested to use only a subset, I get errors like "Too many values or unrecognizable value format" and "bad type, incorrectly subscripted or not found". I'd like to avoid .cin input errors by having all model dat...