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Category Archives: Simulation
A Simple Discrete-Event Simulation: Part 44
Tackling the first item on yesterday’s to do list requires thinking about what we want to implement in an organized way. I found that writing out the requirements helped clarify things. Here’s what we need component by component: Arrivals component … Continue reading
A Simple Discrete-Event Simulation: Part 43
Today I went through and cleaned up each of the component definitions in the process of implementing the ability to rerun the simulation without having to refresh the browser page. Beyond just neatening up the code for each component I … Continue reading
A Simple Discrete-Event Simulation: Part 42
Today I replumbed the layout of components to include a single entry, a single queue, and two processes that each feed the single exit. This required the following modifications: The Queue component had to support multiple outgoing paths. The Queue … Continue reading
A Simple Discrete-Event Simulation: Part 41
Today I took a step back to slightly simpler version of the simulation that uses the original version of the Path components (the ones that have the nodes built into them and act like standalone components). I took two steps … Continue reading
A Simple Discrete-Event Simulation: Part 40
Today I modified the framework to define Node components separately from Path components. This allows us to have any number of paths going into or out of any node so that any arbitrary network can be defined. In the code’s … Continue reading
A Simple Discrete-Event Simulation: Part 39
Today I continue thinking about the details of how entities interact with each other at intersections (and in general). The upper two sections of the figure below describe various dimensions that must be considered. The top section describes a rectangular … Continue reading
A Simple Discrete-Event Simulation: Part 38
Today I set up two Path components so they are linked in series as shown here. The hand-off worked well enough but it’s clear that more thought needs to be given to the details as entities move from one path … Continue reading
A Simple Discrete-Event Simulation: Part 37
Today I finished putting together a basic Path component. It mostly works like a queue but it has “physical” dimensions that take time for the entities to traverse. It also draws the path, its endpoints, and any entities in their … Continue reading
A Simple Discrete-Event Simulation: Part 36
We’ve had most of the components in place to build meaningful discrete-event simulations for a while, but it can be hard to follow what’s going on without knowing exactly what you’re looking at. To make that easier the next increment … Continue reading
A Simple Discrete-Event Simulation: Part 35
Today I finished mods to the DisplayGroup object that allows it to be set up to hide itself a set amount of time after one or more displayed variables change. We begin with the code that now includes the requisite … Continue reading