Ventana software support forum

When I enter the mortality rate in human or animal life simulations, 1.5 people or animals appear to have died. This is impossible in real life. I want to round this decimal number (1,7) to the number 2 or round the decimal number 1,3 to the number 1. Is there a function related to this? Like the ro...

How can I determine the length of stay in a certain age bracket in the population calculation? " Transit Time" ?
Is there an example about this?

Sorry, i know PLE does not support external data.
i asking, can i take a spesific time data.
example i need only 72 month data. No series

Our data in stock or variable is in the form of time series. (picture1) Can we bring it only in specific time form instead of like this (picture2)?

Or perhaps what you're looking for is an export of the dataset to Excel? Use Model>Export Dataset. Are there feature at the PLE version of Vensim ? No, you cannot export using PLE. You can create a table though and copy/paste the values into Excel. Also, something I'm curious about is; Can I show t...

I can do it that way only when I paste it into Excel. (period) and , (comma) errors are bothering me.

tomfid wrote: ↑Wed Nov 29, 2023 3:34 pm Or perhaps what you're looking for is an export of the dataset to Excel? Use Model>Export Dataset.

Are there feature at the PLE version of Vensim ?

I have 20 different stocks that I have created and is there a way to combine their last values in another excel file?

Thank you very much

Thank you very much

Hello; i fixed my model . if you control , i will glad. So i m continue to developing.
i need summation funtion, How can I find the sum of the values entered in all months?

And do I have the opportunity to see which entity?

Best regards

I'm really trying hard to make the model work fully and properly. But I couldn't get rid of unit errors. Because the system has to work on a monthly basis and the values are given annually. When converting month and year, I try to get results by dividing by 30 or multiplying by 12. When I tested the...

Thank you veryi much

In the population example in the appendix, the age group scale is determined as 15 for children, 30 for parents and 20 for the elderly. What do the scales here mean? So, does it mean that up to the age of 15 is a child, between 15 and 45 is the parent's, and between 45 and 65 is the elderly? I didn'...

The first birth begins at 24 months and occurs every 12 months. Deaths and acquisitions happen every month, but our rate is annual. and the transition to another higher age occurs every six months. Accordingly, &&&&& PULSE TRAIN(24, 0 , 12, 66 )*(+female births) PULSE TRAIN(0, 0 ...

Looking at "Bull", the equation should be simple. I'm not sure why you've got a PULSE TRAIN in there. bull = integ("Bull 12-18 Growing" - deaths bull - saled bull, INITIAL BULL) ------------------------------------------------------------------------------------------------------...

Hello
I used the numbers 30, 12 and 365 when making Month, Year and Day conversions. I think that's why I can't edit unit errors. What can I do for it?

(Cow*Birth Rate)-(Cow*Death Birth Rate)-(Cow*Female Birth Rate)

how is formula for work above formula ?
So if time is 26< dont work
if time =26 formula work and it will work every 12 month ?
i did not solve

i set up my dynamic system with yearly units.
but first move time will be 26 mounth so i have to fix units ?

when i use time private variate , how can l use formula?

Thank you very much. i update to my model. i have 2 problem for now 1- i"d like first female calf and first male calf come about at 25 mounths but later other female and male calf come about once every 12 mounts. 2-Since the number of cows cannot be a number with a decimal(1,05 ), is there any ...

]Thank you i have added all to units
And i worked for control only 1 year
Result but it have to this For example number of calf have to decrace later 6 mounts and number of heifer 6-12 have to increace

I am trying to develop system dynamic model about dairy cow lifecycle. Cow number growing exponentially but when calf grow , heifer should inceace , number of calf shoud be decreace. I'm adding model that I made.
I'm waiting for your suggestion
Thank you