A* Pathfinding Algorithm Visualization
Why Stack Overflow recommends it
Stack Overflow users link it as a quick visual example of A* in action, both to explain how the heuristic guides the search and as a model for an interactive grid UI.
Recommended by 1 people across 1 different months, 2013 to 2017.
What it is
A one-minute screen recording of a simple interactive A* pathfinding demo on a grid, uploaded by TheBartR in 2011. It shows the algorithm searching from a start to a goal cell as the user draws walls.
What people said
Recommends danbanica · 2017-09 · Stack Overflow · on “Shortest root using machine learning/AI”
You can also consider the A* algorithm. This finds the same solution as Dijkstra's algorithm, but often at a lower computational cost (which might be important in your case, since after the space discretization you might end up with a large grid). This is because A* uses a heuristic to bias the search, so that it looks into more promising directions first ( e.g. moving towards the target is in principle a good idea, so this is attempted first). You can see some visualizations of A* running here [this video] and (side by side with Dijkstra's algorithm - thanks @Thrawn for the link), here [LINK] .
Cites RodericDay · 2013-02 · Stack Overflow · on “Best PyQt/PySide widget for Pixel drawing?”
I'm teaching myself stuff like the astar algorithm, and working with small-ish matrices. To this end, I want to have a direct way of seeding the matrices I'm sending into the function, and I thought a small app that allowed to do limited-color pixel-by-pixel painting would be great. Basically this: [this video] What is a good widget to use, as both the pixels themselves and the canvas for them? I'm very comfortable with QPushButtons and the like, but I'm not that used to a graphics scene. Is that the way to go? I'd guess something that has built-in methods for detecting when the mouth is hovering on top, and that changes colors quickly... but that makes it seem like a giant QGridLayout with flat
Cites Pritam Das · 2015-05 · Stack Overflow · on “How to make an interactive 2D grid in a window in python?”
I want to test some algorithms on path-finding and want to create a window consisting of grids where I can drag my mouse while clicked to create walls and delete them with right click and drag. I just started with computer science and am fascinated with the algorithms however i don't know how to create the interactive window for it. The example grid can be viewed here: A* pathfindind visualisation [this video]