nlrx provides useful helper functions to generate parameter input matrices from parameter range definitions that cover a wide range of parameter exploration approaches. These class objects hold all the information that is needed to run these experiments remotely from R, such as path to NetLogo installation folder, path to the model file and the experiment specifications itself. Instead of defining experiments within NetLogo Behavior Space, experiments are defined in R using the class objects of the nlrx package. The nlrx package utilizes the commandline functionality of Behavior Space to execute NetLogo simulations directly from R. However, in many cases it is useful to store such specifications along with the model output and analyses results in order to enable fully reproducible model analyses. Furthermore, Behavior Space experiment specifications are stored within the NetLogo file and are not easily accessible from R. One limitation of Behavior Space is, that it only supports full-factorial parameter designs, which may not be appropriate for complex model analyses. This experiment tool can be executed via command line in combination with an XML file that contains the experiment specifications, such as runtime, variables, output measurements, stop conditions, and more. NetLogo comes with the built-in experiment tool Behavior Space that allows to setup and execute model simulations with different settings and parameter variations and to collect model output. More details on NetLogo itself are available online: NetLogo online documentation NetLogo is developed and maintained at the Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL. NetLogo focusses on implementation of agent-based and spatially explicit simulation models, although system dynamics models are supported as well. NetLogo is a free, open-source and cross-platform modelling environment for simulating natural and social phenomena. Be ready to discuss in class what these models are about and how they work.The nlrx package provides tools to setup and execute NetLogo simulations from R.
Go through the following Netlogo tutorials:Īlso, have a look at epiDEM Basic and epiDEM Travel and Control from the Netlogo library. Week 7: The Concept of Agent-Based-Models Lecture
NB without the map in the same directory folder as the model, Netlogo throws an error when it runs.
#Netlogo tutorials download
You can also download and run it by saving the page and this Caribbean map to your computer and opening it in Netlogo.
#Netlogo tutorials code
You can inspect the code of the failed Caribbean Encounter model we discussed in class here. Netlogo is Open-Source and can be downloaded here (please note that you can skip the option to share your details, including email address, and will still be able to download the software).Īlso check out this quirky but solid video on the concept of using ABMs to understand the past by Shawn Graham. In this section of the course we will inspect models made in Netlogo and even practice a bit with making our own models.
The description of the assignment for this section of the course can be found here.
0 kommentar(er)
