GeoGraphViz/exp.html at master · ASUcicilab/GeoGraphViz · GitHub

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<html>
<head>
    <title>geoforce expr</title>
</head>
<body style="margin: 0; background: #3a3a3a;">
    <img src="src/esri_gray_canvas.png" width="1600" alt=""/>
    <svg style="position: absolute; z-index: 10; left: 0; top: 0;"></svg>
</body>

<script src="https://cdn.jsdelivr.net/npm/d3-selection@3"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-dispatch@3"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-quadtree@3"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-timer@3"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-force@3"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/PapaParse/5.1.0/papaparse.min.js"></script>
<script>
const width = 1600;
const height= 800;
// const sim_data = 'DR_sim20';
// const aux_data = 'experts_loc';
const sim_data = 'sim_uw0.45_ub0.3_s0.1';
const aux_data = 'international_placenames2';

var data;
fetch(`data/dataset2/${aux_data}.json`).then($ => $.json()).then(d => {
    loadGraph(d);
});

const _K = 3;
const _k = 8;
const _a = _K > 100 ? 100 / _K : 1
const thres = .6;
const thres1 = thres;
const thres2 = thres;
const loadGraph = function(data) {
    var locinfo = {};
    for (var i in data)
        locinfo[data[i].name] = {
            lat: parseFloat(data[i].lat),
            long: parseFloat(data[i].long),
            city: data[i].city || data[i].name,
            name: data[i].name,
        };

    fetch(`data/dataset2/${sim_data}.csv`).then($ => $.text()).then(d => {
        var lines = Papa.parse(d).data;
        var nodes = lines[0];

        var jnodes = [];
        for (var i = 0; i < nodes.length; i++) {
            var e = 0;
            for (var j = 0; j < nodes.length; j++) {
                var th = nodes[i].substr(0, 2) == nodes[j].substr(0, 2) ? thres1 : thres2;
                e += (i != j && parseFloat(lines[i + 1][j]) > th ? 1 : 0);
            }
            var key = nodes[i] //.split('/').reverse()[0];
            try {
                jnodes.push({
                    'id': i.toString(),
                    'text': locinfo[key].name, //key.replace(/_/g, ' '),
                    'name': locinfo[key].city,
                    'val': e / 10,
                    'lat': locinfo[key].lat,
                    'lng': locinfo[key].long,
                });
            } catch (e) {
                console.log(key)
            }

        }

        var jedges = [];
        for (var i = 0; i < nodes.length; i++) {
            for (var j = i + 1; j < nodes.length; j++) {
                var th = nodes[i].substr(0, 2) == nodes[j].substr(0, 2) ? thres1 : thres2;
                var val = parseFloat(lines[i + 1][j]);
                if (val > th) {
                    jedges.push({
                        'source': i.toString(),
                        'target': j.toString(),
                        'val': val
                    });
                }
            }
        }

        const ow = width / 2;
        const oh = height / 2;
        const _proj = (lng, lat) => [ow * (.9 + lng / 180), oh * (1 - lat / 90)];
        const simulation = d3.forceSimulation(jnodes)
            .alpha(_a)
            .force("link", d3.forceLink(jedges).id(d => d.id)
                .distance(0)
                .strength(1 / _k)
            )
            .force("charge", d3.forceManyBody()
                .strength(-(_k ** 2))
                .distanceMax(width / 10)
            )
            .force("geoforce", GeoForce(jnodes)
                .projection(_proj)
                .strength(_K / _k)
            )
            // .force("center", d3.forceCenter(ow, oh))
            // .force("x", d3.forceX())
            // .force("y", d3.forceY())
            .restart()
            .tick(2000)

        const svg = d3.select("svg")
            .attr("width", width)
            .attr("height", height);

        const link = svg.append("g")
            .attr("stroke", "#ccc")
            .attr("stroke-opacity", .5)
            .attr("stroke-width", .5)
            .selectAll("line")
            .data(jedges)
            .join("line");

        const node = svg.append("g")
            .attr("fill", "#fff")
            .selectAll("circle")
            .data(jnodes)
            .join("circle")
                .attr("fill", "#ccc")
                .attr("r", 3.5);

        node.append("title")
            .text(d => `${d.name}, (${d.lng}, ${d.lat})`);

        link
            .attr("x1", d => d.source.x)
            .attr("y1", d => d.source.y)
            .attr("x2", d => d.target.x)
            .attr("y2", d => d.target.y);

        node
            .attr("cx", d => d.x)
            .attr("cy", d => d.y);

        console.log(`Edge Length Variation: ${ELVar(jedges)}`);
        console.log(`Mean Geographical Offset: ${MeanGO(jnodes, _proj) / height}`);
    });
};

function GeoForce(nodes) {
    let fProj = (lng, lat) => [lng, lat];
    let K = 1;

    function force(alpha) {
        for (let node of nodes) {
            let [x, y] = fProj(node.lng, node.lat);
            let dx = x - node.x;
            let dy = y - node.y;
            let l = Math.sqrt(dx * dx + dy * dy);
            node.vx += dx * K * alpha;
            node.vy += dy * K * alpha;
        }
    }
    force.projection = function(_) {
        if (arguments.length && typeof _ === "function")
            fProj = _;
        return force;
    }
    force.strength = function(_) {
        if (arguments.length && typeof _ === "number")
            K = _;
        return force;
    }

    return force;
}

function ELVar(edges) {
    let dists = edges.map(e => {
        let {x, y} = e.source;
        let dx = x - e.target.x;
        let dy = y - e.target.y;
        return Math.sqrt(dx*dx + dy*dy);
    });
    let n = dists.length;
    let u = dists.reduce((a,b) => a + b) / n;
    let sqvar = dists.map(d => (d - u)**2).reduce((a,b) => a + b) / (n * u*u);
    let l_a = Math.sqrt(sqvar);
    let M_l = l_a / Math.sqrt(n - 1);
    return M_l;
}

function MeanGO(nodes, proj) {
    let dists = nodes.map(n => {
        let [x, y] = proj(n.lng, n.lat);
        let dx = x - n.x;
        let dy = y - n.y;
        return Math.sqrt(dx*dx + dy*dy);
    });
    let n = dists.length;
    let u = dists.reduce((a,b) => a + b) / n;
    return u;
}

</script>
</html>