FeatureTreeRepresentation/index.html at main · UW-LCI/FeatureTreeRepresentation · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Interactive Tree with D3.js</title>
    <script src="https://d3js.org/d3.v7.min.js"></script>
    <style>
        .node circle {
            fill: #fff;
            stroke: steelblue;
            stroke-width: 3px;
        }

        .node text {
            font: 12px sans-serif;
        }

        .link {
            fill: none;
            stroke: #ccc;
            stroke-width: 2px;
        }
    </style>
</head>
<body>
    <script>
        // Define the chart dimensions and margins
        var margin = {top: 100, right: 100, bottom: 100, left: 100},
            width = window.innerWidth - margin.left - margin.right,
            height = window.innerHeight - margin.top - margin.bottom;

        // Load the data and create the tree chart
        d3.json("transformed_label_tree.json").then(data => {
            const root = d3.hierarchy(data);
            const dx = 40;
            const dy = (width - margin.right - margin.left) / (1 + root.height);
            const tree = d3.tree().nodeSize([dx, dy]);
            const diagonal = d3.linkHorizontal().x(d => d.y).y(d => d.x);

            const svg = d3.create("svg")
                .attr("width", width)
                .attr("height", height)
                .attr("viewBox", [-margin.left, -margin.top, width, dx])
                .attr("style", "max-width: 100%; height: auto; font: 10px sans-serif; user-select: none;");

            const gLink = svg.append("g")
                .attr("fill", "none")
                .attr("stroke", "#555")
                .attr("stroke-opacity", 0.4)
                .attr("stroke-width", 1.5);

            const gNode = svg.append("g")
                .attr("cursor", "pointer")
                .attr("pointer-events", "all");

            function update(event, source) {
                const duration = event?.altKey ? 2500 : 250; // hold the alt key to slow down the transition
                const nodes = root.descendants().reverse();
                const links = root.links();

                // Compute the new tree layout.
                tree(root);

                let left = root;
                let right = root;
                root.eachBefore(node => {
                    if (node.x < left.x) left = node;
                    if (node.x > right.x) right = node;
                });

                const height = right.x - left.x + margin.top + margin.bottom;

                const transition = svg.transition()
                    .duration(duration)
                    .attr("height", height)
                    .attr("viewBox", [-margin.left, left.x - margin.top, width, height])
                    .tween("resize", window.ResizeObserver ? null : () => () => svg.dispatch("toggle"));

                // Update the nodes…
                const node = gNode.selectAll("g")
                    .data(nodes, d => d.id);

                // Enter any new nodes at the parent's previous position.
                const nodeEnter = node.enter().append("g")
                    .attr("transform", d => `translate(${source.y0},${source.x0})`)
                    .attr("fill-opacity", 0)
                    .attr("stroke-opacity", 0)
                    .on("click", (event, d) => {
                        d.children = d.children ? null : d._children;
                        update(event, d);
                    });

                nodeEnter.append("circle")
                    .attr("r", 2.5)
                    .attr("fill", d => d._children ? "#555" : "#999")
                    .attr("stroke-width", 10);

                nodeEnter.append("text")
                    .attr("dy", "0.31em")
                    .attr("x", d => d._children ? -6 : 6)
                    .attr("text-anchor", d => d._children ? "end" : "start")
                    .text(d => d.data.name)
                    .attr("stroke-linejoin", "round")
                    .attr("stroke-width", 3)
                    .attr("stroke", "white")
                    .attr("paint-order", "stroke");

                // Transition nodes to their new position.
                const nodeUpdate = node.merge(nodeEnter).transition(transition)
                    .attr("transform", d => `translate(${d.y},${d.x})`)
                    .attr("fill-opacity", 1)
                    .attr("stroke-opacity", 1);

                // Transition exiting nodes to the parent's new position.
                const nodeExit = node.exit().transition(transition).remove()
                    .attr("transform", d => `translate(${source.y},${source.x})`)
                    .attr("fill-opacity", 0)
                    .attr("stroke-opacity", 0);

                // Update the links…
                const link = gLink.selectAll("path")
                    .data(links, d => d.target.id);

                // Enter any new links at the parent's previous position.
                const linkEnter = link.enter().append("path")
                    .attr("d", d => {
                        const o = {x: source.x0, y: source.y0};
                        return diagonal({source: o, target: o});
                    });

                // Transition links to their new position.
                link.merge(linkEnter).transition(transition)
                    .attr("d", diagonal);

                // Transition exiting nodes to the parent's new position.
                link.exit().transition(transition).remove()
                    .attr("d", d => {
                        const o = {x: source.x, y: source.y};
                        return diagonal({source: o, target: o});
                    });

                // Stash the old positions for transition.
                root.eachBefore(d => {
                    d.x0 = d.x;
                    d.y0 = d.y;
                });
            }

            // Do the first update to the initial configuration of the tree — where a number of nodes
            // are open (arbitrarily selected as the root, plus nodes with 7 letters).
            root.x0 = dy / 2;
            root.y0 = 0;
            root.descendants().forEach((d, i) => {
                d.id = i;
                d._children = d.children;
                if (d.depth && d.data.name.length !== 7) d.children = null;
            });

            update(null, root);

            document.body.appendChild(svg.node());
        });
    </script>
</body>
</html>