D3 Annotation Example

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D3 Annotation Example

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Last edited Apr 15, 2025

Created on Apr 15, 2025

This example demonstrates the d3-annotation library, which adds customizable labels, connectors, and callouts to an SVG visualization. It displays four distinct annotation styles—basic labels, labels with arrow connectors and text wrapping, curved connectors with dot endpoints, and a circular callout—placed on a blank white canvas without any underlying data or scales. The code uses the `d3.annotation()` factory method with `d3.annotationLabel` and `d3.annotationCalloutCircle` types, configuring properties like note position, offset, and connector style. Each annotation is manually positioned with x/y coordinates and rendered by appending a group to the SVG.

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