So, I'm pretty new with Anylogic, but have done a lot of tutorials and I have programming experience in Java. For my thesis I'm modelling a vehicle flow as a process. In the source block, I create custom agents (vehicles) with some parameters from the database. This works fine. Then I want to assign an electric parameter with randomTrue(0.5). For this, I call a setupTaxi-function, where electric ist set. The parameter for the randomTrue-function should be changeable, so I set it as an extra paramter anteilEtaxis (0.5).
After that, I want the vehicles to do different things depending on the value of electric using SelectOutput. I selected the Condition and test on agent.electric.
I basically did the exact same thing as described in the Anylogic help. And yet the framework always chooses the true Output port, no matter if the parameter ist set to true or false.
See the image for setup and parameters. I tested this via console (the first line is a println-call in source, the second a println-call in selectOutput.). Plus you can see that the parameter is set to different values, because the 3D visualisation model depends on it:
enter image description here
Also, I tried a few different combinations of setting the parameters, reading them etc... The only thing that will work is putting randomTrue(0.5) directly in the Condition box. This is not what I want though. So if you have an idea, what is wrong, please tell me.
This is a typical beginners problem.
I will assume you are calling the setupTaxi-function in your source in the "on exit" action... If you are doing that, then it's too late and the agent already made its decision on where it will go after the select output block.
You have to call your setupTaxi-function in 2 possible places:
1) In your source on the "on at exit" action
2) In your vehicle agent on the "on startup" action
Or even.. just make electric variable have a default value of randomTrue(main.anteilEtaxis)... that will also work.
Related
I have a model of a supply chain in which my agents "Product" pass through blocks in some agents (i.e. "Vendor", "Factory", "Wholesaler", and "Retailer") and I have a flowchart block in which the said agents in the supply chain use it. I would like to measure the time my agent "Product" spent, which its TimeMeasureStart is in for example its "Vendor" page and its following TimeMeasureEnd is in the said flowchart block like this. Now I have difficulty defining TimeMeasureStart in the TimeMeasureEnd block in the flowchart block.
I tried to use getRootAgent() but this way I couldn't access the timeMeasureStart block of the root agent so I couldn't try this.
Also tried to define a variable in the flowchart block page like this (and I know this way is wrong but I have no idea how to define a variable to suit TimeMeasureStart)
and then use it to define the corresponding TimeMeasureBlock the "Product" had passed: timeMeasureEnd Properties
but it gave me these 2 errors:
Type mismatch: cannot convert from TimeMeasureStart[] to TimeMeasureStart.
Variable must provide either dimension expressions or an array initializer.
Also tried set_startObjects but I didn't understand how to work with it and couldn't find the documentation in AnyLogic Help.
I really would appreciate any help.
(Also so sorry if the images are blurry, I don't know why their quality gets like this when I upload them.)
Either use
((Main)getRootAgent()).timeMeasureStart()
Or simply use
main.timeMeasureStart
Both take you back to Main. The former uses type casting, the latter is a direct link created by AnyLogic (assumes your timemeasureStart is in an agent embedded in Main)
I am trying to use a .mos file in Dymola to do multiple simulations, here is an example from claytex's blog:
openModel("C:/Dymola/Testing/Test1.mo")
translateModel ("Test1");
for i in 1:10 loop
a=i;
simulate();
system("copy dsres.mat results"+String(i) +".mat");
end for;
It seems when I translate a model in the script file, I could modify the model's parameters again, which is different when I use Dymola's GUI. In Dymola's GUI, if I try to modify the parameter after I translate the model, I have to re-translate the model. My question is:
In Dymola's script file, when I modify the parameter, how does Dymola deal with it?
The above comment by "user2024223" is correct, but I think "variable browser" is not stressed enough and some more explanation could help:
When changing the model's parameters after translation, make sure you are not using the model editing (either "Graphical" or "Text"-Ribbon), because this will change the model's code and therefore (usually) force re-translation. The same is true for the "Model View" in the "Simulation" Ribbon.
The code will not be changed if you use the "Variable Browser" in the "Simulation"-Ribbon. An alternative (which actually does the same) is typing the parameter value in the "Commands"-line. E.g. this could be J1.J=5 for the CoupledClutches example. Both of the variants in the paragraph should behave similarly to the script.
Dymola deals with parameter changes after translation by modifying the dsin.txt file.
Some/many parameters have been evaluated and cannot be changed in this way - these variables are not editable in the Variable Browser.
You will get a warning if you try to change non-editable variables in a script.
Note: You should in most cases not have to deal with re-translating the model even after modifying the editable parameters of that model in the GUI. Just simulate the model again - hopefully it does not need re-translation.
In the simulation window, before the run, I'd like to change some probability distributions (e.g. delay time) by typing, for example, "triangular(5, 20, 15)" into a specific editbox linked to a variable.
I know how to do this with static values, but I couldn't figure out how to do the same with probability distributions.
AnyLogic offers a built-in functionality for that with com.anylogic.engine.database.CodeValue.
It is originally meant that a distribution function stored as text in the internal database can be parsed to java code and executed, but it actually also works without the database and for any kind of code. It is the same idea as in Benjamin's answer, just that you do not need to add any external java library.
Use it like this:
CodeValue myCode = new CodeValue(this,"....java code to be executed");
myCode.execute();
And in your specific case, assuming you have a variable named variableA and an editbox named editbox, use the following to evaluate the expression, get a value and set it for the variable:
CodeValue myCode = new CodeValue(this,"variableA = "+editbox.getText());
myCode.execute();
Obviously, allowing the user to type any command there and running it without a check or error treatment is a bad idea, be aware of that.
This is a Java issue. You need to convert a String (your editbox content) to executable code. Not straight-forward but also not impossible, see Convert String to Code and similar posts.
I want to create some charts in anylogic. I know at first we should add some condition in the "statistic". we should use "item.instate". But I do not want to use statechart. I want to use a parameter or color of agents for that.
for example I have 100 agent with different opinion. the opinion is parameter for agents. Also, I changed the the color of agent by their opinion. I want to create the chart that demonestrate the number of agent with "totally Agreed" opiniin.
how can do it?
in the following picture, what I should write in the condition?
enter image description here
You can simply type item.myOpinion == "I like x", assuming your agent's opinion parameter is called myOpinion and you want to count those that have that opinion.
If your opinion is actually a color, it would be item.myOpinion.equals(Color.red) but your myOpinion would need to be of type Color.
However, there are many things garbled in your question. If you agents change their opinion, it should not be a parameter but a variable, for example...
I am using Behavior Search to calibrate my NetLogo model for 20 different hospital units. I am using global variables to set the min and max for several sliders in my model, but I think this is causing an error in Behavior Search when I attempt to load the parameter values from the model. However, I don't want to manually enter these parameter ranges manually each time I use Behavior Search.
Is there a way to get around this error? Is there a way to set the min and max for a specific slider to a constant, rather than using global variables?
Thanks for your help!
BehaviorSearch developer here -- if I'm understanding your question correctly, your NetLogo model has a slider which has a min/max constraint that is not set to a constant, but is instead set to a global variable (in the slider settings, accessed from the NetLogo interface).
When I choose such a model using the BehaviorSearch GUI, and then click the "Load parameter ranges from model interface" button, then I get the value of 0 for that constraint. (I don't see any error message -- just the value 0 (if you're getting an error message instead, then I may not be understanding your situation correctly, and perhaps you could post exactly what error message you're seeing?)
This will be true even if you are setting the slider min/max to a global value in the special STARTUP procedure (see: http://ccl.northwestern.edu/netlogo/docs/dict/startup.html), because STARTUP is only run when a model loads in the NetLogo GUI, and not when a model is loaded in headless NetLogo.
Thus, unfortunately, I think the answer to your question is: "no, there isn't a way to get BehaviorSearch to load the parameter ranges from global variables within the model".
Some possible work-arounds:
BehaviorSearch is open-source -- some changes could be made to it -- i.e., maybe adding in a call to "startup" whenever BehaviorSearch GUI loads the parameter ranges would be sufficient for you.
If you're only doing a few searches, I don't see why manually editing the parameter ranges would be particularly onerous. However, if you're generating a lot of different searches with this model, then I can see how it might be an issue. The .bsearch files are just XML text files, so you might consider generating them without the BehaviorSearch GUI, e.g. using a scripting language.