Modifying a Force Layout

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Modifying a Force Layout

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Last edited Jun 3, 2018

Created on Jun 3, 2018

This example shows a small force-directed graph with three nodes, A, B, and C, that repeatedly changes structure over time. It initially displays three isolated nodes; after one second, the nodes form a triangle of links, then node C is removed with its connections, and later re-added, cycling every second thereafter. Built with d3.v4, the code uses `d3.forceSimulation` for layout physics and applies a general update pattern with `node.data` and `link.data` to join dynamic datasets. The SVG render updates each tick via the simulation's `on("tick", ticked)` callback, repositioning circles and lines accordingly.

AI-generated description

This example demonstrates how to add and remove nodes and links from a force-directed layout. The graph initially appears with three disconnected nodes A, B and C. After one second, the three are connected in a loop. At two seconds, node C is removed, along with the links A-C and B-C. At three seconds, node C is reintroduced, restoring the original links A-C and B-C. Every subsequent second alternates between these two steps.

This example uses the general update pattern for data joins. See also modifying a force layout with transitions.

forked from <a href='http://bl.ocks.org/mbostock/'>mbostock</a>'s block: <a href='http://bl.ocks.org/mbostock/1095795'>Modifying a Force Layout</a>

gpl-3.0 Licensed

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