NETLOGO LPUT HOW TO
NETLOGO LPUT CODE
NETLOGO LPUT SERIES
NETLOGO LPUT FREE

value to 'list-of-numbers' by using 'read-from-string' and 'lput'. space), the while loop extracts the first number with 'substring' and then assigns it as a numeric As long as there are at least two numbers in the string (identified by the presence of at least one user input intact - hence we use this 'temp-string' to trim the string without worries. missing something here) but also because you might want to keep the value of the

NETLOGO LPUT FREE

'user-string' directly (I am not sure why, anyone please feel free to say if I'm the 'trim-string-to-next-nonspace' procedure won't let me change the value of Temp-string A temporary variable being the alter-ego of 'user-list'. List-of-numbers The list where values from the input string will be stored.

NETLOGO LPUT CODE

The procedure I posted above is the condensed version of the initial code I made, that I am leaving here below abundantly commented: globals [ Observer> show convert-user-string user-string So for example: observer> set user-string '0.5 0.2 0 0.2 0.5' Set list-of-numbers lput (read-from-string temp-string) (list-of-numbers) Set list-of-numbers lput (read-from-string next-number-as-string) (list-of-numbers)

Let next-number-as-string (substring temp-string 0 position ' ' temp-string) The procedure below is a reporter procedure that executes this workflow and reports a list of values as read from the string (it only needs a user-string input box in the Interface): to-report convert-user-string the whole remaining string) to list-of-numbers outside the loop, and it's all done.

When the loop condition evaluates as FALSE it means that only one number is left in the string.

Drop the first number in the string (using position ' ' string, repeat and but-first) and start the loop again.

Read that substring as a numeric value (with read-from-string) and add it to list-of-numbers (with fput).

Extract a substring that goes from the first character to the first space excluded (done with substring).

Create a loop that goes on as long as the string contains more than one number (= as long as it contains at least one space, checked using position ' ' string).

You can do it with a combination of position, substring, read-from-string and fput. I am very new to NetLogo, so sorry if my question is silly or I have not made something clear! I also attempted to use the explode function from the string extension ( ), but my version of Netlogo (6.2.0) did not like the API from that extension and wouldn't allow me to use it.

NETLOGO LPUT SERIES

I have tried using read-from-string, but it also doesn't like a series of numbers entered like above. not reading in a text file of values) to make it easier to change, as it is something that I suspect will get played around with a lot. ' ')? I am open to alternatives too, although I would prefer to keep it in Netlogo (e.g. So, how can I parse the string the basis of a space (i.e. If I set the type to numeric, it will only allow a single number to be entered. Unfortunately, having an input set up like above will spit out '0.5 0.2 0 0.2 0.5' if I set the type to be a string. , so I can then use the numbers that they enter for some calculations. What I would like to have from the input shown above is a list of five numbers, e.g. G.For my model I would like to have an input where the user can enter a series of values. See if you want to know more about oscillators in general.įind mode about the 'Stuart-Landau' oscillator in I used the code for complex operations directly from the 'Mandelbrot model'. NETLOGO FEATURES RELATED MODELS CREDITS AND REFERENCES You could add links between nodes and make them interact. Move lambda and omega to see their influence on the behaviour of the nodes. Push 'setup' and 'go' :) THINGS TO NOTICEĭrawing the trajectories helps to see the the stable region (here a cycle). For more details about 'dt' see Euler algorithm for numerical simulation of derivative equations.Ĭhoose if you want to see the trajectories of the nodes. This is the increment of time in the model. Putting more than one node helps to explore the behaviour of the whole system (e.g.

NETLOGO LPUT HOW TO

HOW TO USE ITĬhoose the number of nodes (note that in this model the nodes do not interact with each other, so you can simply put one node) with the 'nb-node slider'. |z| represent the modulus of the complex number z. Where lambda and omega are control parameters. xcor is the real part and ycor is the imaginary part).Įach node follows the following equation of motion: The nodes coordinates represent both real part and imaginary part of 'z' (i.e. The Stuart-Landau oscillator model HOW IT WORKSĮach node (turtle) represents one oscillator: a single variable 'z' which is complex (i.e. Do you have questions or comments about this model?

Netlogo lput