Responding to Resize
This example demonstrates how an SVG visualization can dynamically respond to browser resizing. It shows a green X drawn inside a chart container that automatically adjusts its dimensions to match the container’s current width and height. The code uses D3 v5 to append and update line elements, reading the container’s `clientWidth` and `clientHeight` within a `redraw` function triggered by a window resize listener. A separate `setsvgsize` function also resizes an additional SVG element based on window dimensions, illustrating two approaches to size management.