Other users should visit the NetLogo home page at Northwestern and the NetLogo users group on Google.
#NETLOGO CODE CODE#
You could write an entire NetLogo program as a function and run it from the command center in this way but this is not the most usual way of doing the job.This page is for open source developers interested in the source code for NetLogo. One way is to simply type the function's name into the command center: So how do you run the code in a function? The name of the function is greet and the keyword to assigns the lines of code until you reach end. Logo functions are just like functions you will find in other languages but the syntax is slightly strange. Everything you enter into to the code editor has to be in the form of a function. The Code tab takes you to a code entry editor where you can build up larger programs. If you want to enter a long program then the command center isn't good way to do the job. Now we need to move on to a program that does a little more.
You will see the message appear in the command center box above. This means we can get "Hello World" out of the way at once.
You can type in a line of code and it will be obeyed at once. In fact it s is just an immediate evaluation entry line. This terminology doesn't make much sense when you first meet it. If you look at the bottom of the Window you will see a horizontal panel and a text box labeled "observer". All a bit mysterious with no real clue as to what to do next. Running A ProgramĪssuming that you have NetLogo downloaded and running the first thing that you see is a window containing a menu, three tabs (more of which later) and a black window.
#NETLOGO CODE INSTALL#
Simply download, install and run - there should be no problems.
#NETLOGO CODE MAC#
The good news is that NetLogo is open source and it runs on Linux, Windows or Mac OS. Its objective is, not to teach you the whole of NetLogo, but to simply get you started with the basic concepts and to get you to a point where the excellent documentation becomes useful to you. This is very good, but really doesn't give the beginner or the experienced programmer a very easy route into getting started with NetLogo - this is, I hope, where this article comes in. Perhaps the third problem is the documentation. However, don't think that NetLogo is limited to the situations I have listed - it is a completely general purpose language with some special features. This makes it ideal for simulations where you have lots of similar agents doing similar things such as population studies, simulating gas molecules, traffic flows and so on. NetLogo is a quasi parallel language - to be more precise its a simulated SIMD (Single Instruction Multiple Data) language. What this means is that you can create multiple agents very easily and get them to do things equally easily. The second big problem with learning NetLogo is that it is an agent-based simulation language. The best way to describe it is as a stack-oriented language, but I have no doubt that there are Logo enthusiasts who would take issue with this description. It isn't really a functional language either. Logo isn't like the popular object-oriented languages that we are all so familiar with. The first is that it is based on Logo and this presents a barrier to anyone not lucky enough to have encountered Logo at school, say. However, there a number of difficulties in getting started with it. NetLogo really is a language that deserves to be better known in the wider programming community simply because there are some applications that it is perfect for and not to use it would be taking the long way round.
If you think that this educational language died out, NetLogo demonstrates the inevitable truth that no computer language ever dies out!
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