#Netlogo lists how to#
#Netlogo lists mod#
#Netlogo lists code#

#Netlogo lists mod#

The mod primitive will check for an invalid zero divisor.The tan primitive will better handle asymptotic values.The extract-rgb primitive will work exactly the same as desktop NetLogo's version.The error primitive will properly generate stack traces.We removed some methods to overwrite special JavaScript values using built-in primitives.Fast-running models with large plots could sometimes stop updating and appear blank.When you get a runtime error message you can now easily copy it with the provided button.Many more primitives and agent built-in variables have proper runtime error checks and will now generate meaningful error messages when an unexpected condition is encountered.This should provide a small performance improvement for models that heavily use them ( lput and fput are examples). Primitives that take any kind of value (string, number, boolean, list, agent, agentset, etc) no longer check their argument types at runtime.The Table extension now contains to-json and from-json primitives for converting to and from JSON strings.The Functional Programming extension is now supported on NetLogo Web.July 6th 2022 - v2.10.0 The major feature in this release is the ability to create and edit plot widgets in NetLogo Web! Check out the Authoring mode documentation for more information on creating and editing widgets.

#Netlogo lists code#

It also includes some changes to NetTango Web, including syntax highlighting in block code tips.

The random-normal reporter is no longer broken as it was in v2.10.0.

The random-exponential reporter is now properly checked for runtime errors.

Note how we make use of the concise syntax for passing list to map and for passing last to rnd:weighted-one-of-list.The major feature in this release is the ability to jump to the exact primitive in the code tab that causes a runtime error. To understand how that code works, it helps to understand how Anonymous procedures work. But since we're only interested in the first item of the pair, we use first to extract it. Rnd:weighted-one-of-list then picks one of the pairs at random, and returns that whole pair.

We pass last as the second argument of rnd:weighted-one-of-list to tell it that it should use the second item of each pair as the probability. That list of pairs is passed as the first argument to rnd:weighted-one-of-list. The role of (map list some_list probabilities) is to 'zip' the two lists together, in order to get a list of pairs of the form: ].

Report first rnd:weighted-one-of-list (map list some_list probabilities) last The rnd extension offers the rnd:weighted-one-of-list primitive, which does exactly what you're trying to do: extensions (You can also download the extension separately for earlier versions of NetLogo.) NetLogo 6.0 comes with the rnd extension bundled. Set random_nr random_nr - item index probabilities While(r >= 0 and index = 0) and (length probabilities < index)] [ I need to use the same method afterwards to choose a variable (string) from a list according to probability.ĭef random_value(probability_list, values): The function selects randomly the variable based on probability.

#Netlogo lists how to#

How to assign a string or integer variable to turtle, using probabilities of the variables in a group/list? For example it is 0.4 probability that one specific variable is used from specific group/list.