Patches have the variable "countdown." This countdown is used to replenish eaten grass in the "sheep-wolves-grass" model-version (see the top dropdown menu in the Interface). Both of these breeds have the variable "energy" (in the turtles-own section) which gets depleted by movement, and gets replenished by food. Here, the model has two breeds of turtles: wolves and sheep.
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how to deal with agentsets and breeds, which allow you to distinguish between.
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Please refer to the NetLogo tutorial to know more about those. NetLogo is a software package that provides a programming environment for. Fast view Vista download - NetLogo Vista download - Best Free Vista Downloads - Free Vista software download - freeware, shareware and trialware downloads. NetLogo has 3 types of entities: Turtles, links, and patches. You define turtle breeds using the breed keyword, at the top of the Code tab. Then, the code establishes the entities of the model. In NetLogo, there are four types of agents: turtles, patches, links. This means that it can be called or changed by any entity of the model. Here, the first line creates a new variable called "max-sheep" that is a global variable.
create turtle agents with the create-turtles (or create-NetLogo code always starts with some setup lines (see image). NetLogo, we do this with three breed statements (at the top of the Procedures tab). Those are called "primitives" and have different colors. As any other language, it has some terms that do specific actions under the hood. Then, change some of the variables you can (blue-green boxes).Ĭlick "setup" and "go" again to see how the changes you made affect the simulation. Those can be graphs or values.Ĭlick "go" and see how the model behaves. This sign means that, when clicking the "go" button, it will remain clicked (and will call the "go" function) until you click it again.īeige boxes show outputs from the model.
Notice that the "go" button has an arrow sign that the "setup" button doesn't. The idea of link breeds is based on turtle breeds both turtles and links can come in different breeds. You can also Try running it in NetLogo Web WHAT IS IT This code example shows how to create different kinds of links using link breeds.
This call the "setup" function in the main code. Then the networks are created by createYou can see the line "setup" in the Commands box. The action is called in the button itself (right-click on setup, and select "Edit" to see what that looks like.
Purple boxes are buttons that perform an action. Those can be dropdown menus, sliders, input boxes, or switches (ON-OFF). To avoid getting overwhelmed, focus on the colors.īlue-green boxes show variables that can be changed by the user. The Interface of NetLogo ABMs usually have several buttons, sliders, and windows, as we have here.
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