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graphology-layout-noverlap
Advanced tools
Changelog
0.4.2
Readme
JavaScript implementation of the Noverlap anti-collision layout algorithm for graphology.
Note that this algorithm is iterative and might not converge easily in some cases.
npm install graphology-layout-noverlap
Each node's starting position must be set before running the Noverlap anti-collision layout. Two attributes called x
and y
must therefore be defined for all the graph nodes.
20
]: number of grid cells horizontally and vertically subdivising the graph's space. This is used as an optimization scheme. Set it to 1
and you will have O(n²)
time complexity, which can sometimes perform better with very few nodes.5
]: margin to keep between nodes.1.1
]: percentage of current space that nodes could attempt to move outside of.1.0
]: ratio scaling node sizes.3
]: dampening factor that will slow down node movements to ease the overall process.import noverlap from 'graphology-layout-noverlap';
const positions = noverlap(graph, {maxIterations: 50});
// With settings:
const positions = noverlap(graph, {
maxIterations: 50,
settings: {
ratio: 2
}
});
// With a custom input reducer
const positions = noverlap(graph, {
inputReducer: (key, attr) => ({
x: store[key].x,
y: store[key].y,
size: attr.size
}),
outputReducer: (key, pos) => ({x: pos.x * 10, y: pos.y * 10})
});
// To directly assign the positions to the nodes:
noverlap.assign(graph);
Arguments
500
]: maximum number of iterations to perform before stopping. Note that the algorithm will also stop as soon as converged.If you need to run the layout's computation in a web worker, the library comes with a utility to do so:
Example
import NoverlapLayout from 'graphology-layout-noverlap/worker';
const layout = new NoverlapLayout(graph, params);
// To start the layout. It will automatically stop when converged
layout.start();
// To stop the layout
layout.stop();
// To kill the layout and release attached memory
layout.kill();
// Assess whether the layout is currently running
layout.isRunning();
FAQs
Noverlap anti-collision layout algorithm for graphology.
The npm package graphology-layout-noverlap receives a total of 6,879 weekly downloads. As such, graphology-layout-noverlap popularity was classified as popular.
We found that graphology-layout-noverlap demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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