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POConfigure fixed-layout static graph in d3.js
 

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  1. POConfigure fixed-layout static graph in d3.js
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    <p>I have a working code example (only the <code>&lt;script type="text/javascript"&gt;</code> part) of a static graph using <code>d3.js</code> as below:</p> <pre><code> /* Create graph data */ var nodes = []; for (var i = 0; i &lt; 13; i++) { var datum = { "value": i }; nodes.push(datum); } var links = [{"source": 0, "target": 1}, {"source": 1, "target": 2}, {"source": 2, "target": 0}, {"source": 1, "target": 3}, {"source": 3, "target": 2}, {"source": 3, "target": 4}, {"source": 4, "target": 5}, {"source": 5, "target": 6}, {"source": 5, "target": 7}, {"source": 6, "target": 7}, {"source": 6, "target": 8}, {"source": 7, "target": 8}, {"source": 9, "target": 4}, {"source": 9, "target": 11}, {"source": 9, "target": 10}, {"source": 10, "target": 11}, {"source": 11, "target": 12}, {"source": 12, "target": 10}]; /* Create force graph */ var w = 800; var h = 500; var size = nodes.length; nodes.forEach(function(d, i) { d.x = d.y = w / size * i}); var svg = d3.select("body").append("svg") .attr("width", w) .attr("weight", h); var force = d3.layout.force() .nodes(nodes) .links(links) .linkDistance(200) .size([w, h]); setTimeout(function() { var n = 400 force.start(); for (var i = n * n; i &gt; 0; --i) force.tick(); force.stop(); svg.selectAll("line") .data(links) .enter().append("line") .attr("class", "link") .attr("x1", function(d) { return d.source.x; }) .attr("y1", function(d) { return d.source.y; }) .attr("x2", function(d) { return d.target.x; }) .attr("y2", function(d) { return d.target.y; }); svg.append("svg:g") .selectAll("circle") .data(nodes) .enter().append("svg:circle") .attr("class", "node") .attr("cx", function(d) { return d.x; }) .attr("cy", function(d) { return d.y; }) .attr("r", 15); svg.append("svg:g") .selectAll("text") .data(nodes) .enter().append("svg:text") .attr("class", "label") .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; }) .attr("text-anchor", "middle") .attr("y", ".3em") .text(function(d) { return d.value; }); }, 10); </code></pre> <p>and it produces this rather scrambled layout:</p> <p><img src="https://i.stack.imgur.com/AzjjJ.png" alt="enter image description here"></p> <p>While it is technically the correct graph, the ideal layout should be something like this (ignoring the different visual graphics):</p> <p><img src="https://i.stack.imgur.com/Z9YCF.png" alt="enter image description here"></p> <p>Note that the layout should be fixed so that reloading the page does not change the positioning of each node; the layout should also be static, in that there is no animation effect and the nodes are not draggable. Both requirements are already achieved in the script above.</p> <p>So how should I further configure this <code>d3</code> script to produce a layout shown in the second image?</p>
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