10.transition-update pattern

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10.transition-update pattern

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Last edited Aug 1, 2016

Created on Jul 22, 2016

The visualization demonstrates the D3 update pattern by animating a changing subset of the alphabet as text elements enter, update, and exit. The code defines separate transition states for each lifecycle phase—green for entering, dark gray for updating, and brown for exiting—using the `d3.transition` API with a 750-millisecond duration. Elements move horizontally to their new indexed positions, while exiting items fade out and shift downward before removal. The data shuffles and slices randomly every second via `d3.interval`, with the SVG output repositioning based on the current array.

AI-generated description

By adding transitions, we can more easily follow the elements as they are entered, updated and exited. Separate transitions are defined for each of the three states. To avoid repeating transition timing parameters for the enter, update, and exit selections, a top-level transition t sets the duration, and then subsequent transitions use selection.transition, passing in t to inherit timing:

var t = d3.transition()
    .duration(750);

Want to read more? Try these tutorials:

See the D3 wiki for even more resources.

Previous: Key Functions

forked from <a href='http://bl.ocks.org/mbostock/'>mbostock</a>'s block: <a href='http://bl.ocks.org/mbostock/3808234'>General Update Pattern, III</a>

gpl-3.0 Licensed

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