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Axes with Hover

✓ Published0🌍 Public

Last edited Mar 16, 2025

Created on Mar 16, 2025

This example demonstrates an interactive scatter plot with dynamic hover feedback. As the mouse moves over the plot area, black reference lines extend from the cursor position to both the x-axis and y-axis, visually linking the cursor to its coordinate values. The visualization uses D3.js v7 and relies on the `pointer` event method to capture mouse coordinates and a ResizeObserver to handle responsive dimensions. Axes are rendered with `axisBottom` and `axisLeft`, while the `scaleLinear` scales map data values to pixel positions. The hover lines only appear when the cursor is within the plot's inner rectangle boundaries.

AI-generated description

Adding a hover effect to the inner rectangle to extend lines from the cursor to the axes.

Challenge

Show the hovered numbers in place of tick marks on the axes themselves.

MIT Licensed

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