Fork of with D3 and group elements

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Fork of with D3 and group elements

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Last edited Jan 23, 2023

Created on Jan 23, 2023

This example generates an SVG grid of horizontal and vertical rectangles, precisely 960 by 500 pixels, using the D3.js library. The grid is composed of two groups of rectangles, each with a stroke width of 8 pixels, and is overlaid with circular masks to create a focal point in the center. The code leverages D3's `select`, `append`, `attr`, and `range` methods to build the structure, along with custom `setAttributes` and `join` helpers for efficient element creation. The visualization demonstrates how to combine SVG masks with D3's data-driven rect generation to produce a geometric pattern with a central spotlight effect.

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A bare minimum HTML page demonstrating use of CSS and JavaScript.

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