Follow the above link to browse the group. reindeer and hunters are both breeds of turtle. Each name of a vector in this list defines a specified link breed of the NetLogo model, whereas the vector defines the variables that are measured for this link. There you can discuss thoughts and questions about NetLogo with other users via email or the web. If you have more questions in the future I encourage you to make use of our main online user community list 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
#NETLOGO BREED PATCH#
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 For details of other primitives created, refer to the breeds section of the NetLogo Programming Guide.17 You can change the breed of a turtle (using set. Patches: The NetLogo world is two-dimensional and is divided up into a grid of patches. 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. The NetLogo world is made up by four types of agents (see figure 2 ), i.e.: Turtles. If you want to learn about using breeds, here are some resources: Commands can be addressed to turtles of a breed. 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?
user-defined turtle variables (also#NETLOGO BREED CODE#
If a breed were defined in the code with the statement In this activity, well build a NetLogo model in which the turtle agents, grouped into different breeds or strains in an ecosystem, play a simplified form. and create-turtles are both primitives (they are built into NetLogo). (For turtles or links that do not have any particular breed, this is the turtlesagentset of all turtles or the linksagentset of all links respectively.
It holds the agentset of all turtles or links of the same breed as this turtle or link. The error message appears because no breed has been defined. NetLogo Help: breed breed breed This is a built-in turtle and link variable. I will briefly explain why it is not a NetLogo bug, and then offer some programming ideas. breed fishes fish patches-own HeightA Current height of the column.
#NETLOGO BREED UPDATE#
Most often, the agentset is used in conjunction with ask to give commands to only the links of a particular breed.Thanks for contacting us about your problem. After that, the update of water columns has to be done only in these water patches. is directed or undirected as declared by the keyword.The second input defines the name of a single member of the. has its built-in variable breed set to that agentset The first input defines the name of the agentset associated with the breed.is part of the agentset named by the link breed name.Directed links can be created using create-link(s)-to, and create-link(s)-from, but not create-link(s)-with
The second input defines the name of a single member of the breed.
Links of a particular breed are always all directed or all undirected The first input defines the name of the agentset associated with the link breed. Be aware, that NetLogo will produce runtime errors if you measureThis keyword, like the globals and breeds keywords, can only be used at the beginning of the Code tab, before any procedure definitions.
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