![]() Follow the above link to browse the group. There you can discuss thoughts and questions about NetLogo with other users via email or the web. The Modeling Commons contains more than 2000 other NetLogo models. For example, you could have breeds called sheep and wolves, and have the wolves try to eat the sheep or you could have link breeds called streets and sidewalks where. Once you have defined breeds, you can go on and make the different breeds behave differently. If you have more questions in the future I encourage you to make use of our main online user community list View, run, and discuss the Breeds and Shapes Example model, written by Uri Wilensky. NetLogo allows you to define different breeds of turtles and breeds of links. The NetLogo model in the attached zipped file gives a simple example of a car that stops at yellow lights and not green lights. If you create a procedure called move for cars, you can get them all to move using the command adults have a frog shape that turns red when the adult is ready to breed. If you create breeds for cars and lights, you can test if a car is on the same patch as other cars or lights using FYFAM is implemented in NetLogo, which provides a power graphical user. (The links are created all at once then run one at a time, in random order.) A. You got an error message because you did not define any breeds.Ī quick way to open an example of using breeds from the NetLogo Model Library is to type “_Breed” in the command center. So we come to bree ds NetLogo predefines one breed of agents called turtles As programmer, you are free to define more breeds using the breed. The optional command block is the set of commands each newly formed link runs. If you want to learn about using breeds, here are some resources: The Modeling Commons contains more than 2,000 other NetLogo models, contributed by modelers around the world. Commands can be addressed to turtles of a breed. Just a reminder, NetLogo increments the who number each time a turtle is created.This means that if you change the code so that a different number are created, or they are created in a different order, there is no guarantee that you will still have a turtle with the same identifier. View, run, and discuss the 'Link Breeds Example' model, written by Uri Wilensky. The angle brackets in is-? mean that the letters should be replaced by the actual name for a single member of the breed.īreeds are turtles that belong to a group. Then the correct syntax for the command you are looking for would be is-light? If a breed were defined in the code with the statement The error message appears because no breed has been defined. I will briefly explain why it is not a NetLogo bug, and then offer some programming ideas. Thanks for contacting us about your problem.
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