d3 フォース sim があり、次のようにノードを追加する場合:
node = node.data(nodes, function(d) { return d.id;});
node.exit().remove();
node = node.enter().append('circle')
.attr("class", function(d) {return d.type;})
.attr("r", 25)
.merge(node);
すべて正常に動作します - 円が正しい場所に追加され、レンダリングされた html は次のようになります。
<svg width="1280" height="960">
<g transform="translate(640,480)">
<g stroke="#000" stroke-width="1.5">
<line x1="197.7877989370864" y1="16.96383936157134" x2="113.39655998594978" y2="176.9054238213185"></line>
<line x1="-99.71642802229279" y1="182.82652731678513" x2="-206.38001140055673" y2="35.62690731557146"></line>
<line x1="-111.21899770908817" y1="-104.07607869492837" x2="9.724648489851102" y2="-238.28831674029004"></line>
<line x1="-111.21899770908817" y1="-104.07607869492837" x2="73.66744043019104" y2="-114.11648500001087"></line>
<line x1="197.7877989370864" y1="16.96383936157134" x2="10.328317030872993" y2="37.5171491536661"></line>
<line x1="-99.71642802229279" y1="182.82652731678513" x2="10.328317030872993" y2="37.5171491536661"></line>
<line x1="-111.21899770908817" y1="-104.07607869492837" x2="10.328317030872993" y2="37.5171491536661"></line>
<line x1="197.7877989370864" y1="16.96383936157134" x2="73.66744043019104" y2="-114.11648500001087"></line>
</g>
<g prop="nodes" stroke="#000" stroke-width="1.5">
<circle fill="some_image.png" class="Net" r="25" cx="197.7877989370864" cy="16.96383936157134"></circle>
<circle fill="some_image.png" class="Net" r="25" cx="-99.71642802229279" cy="182.82652731678513"></circle>
<circle fill="some_image.png" class="Net" r="25" cx="-111.21899770908817" cy="-104.07607869492837"></circle>
<circle fill="some_image.png" class="Inst" r="25" cx="113.39655998594978" cy="176.9054238213185"></circle>
<circle fill="some_image.png" class="Inst" r="25" cx="-206.38001140055673" cy="35.62690731557146"></circle>
<circle fill="some_image.png" class="Inst" r="25" cx="9.724648489851102" cy="-238.28831674029004"></circle>
<circle fill="some_image.png" class="Inst" r="25" cx="73.66744043019104" cy="-114.11648500001087"></circle>
<circle fill="some_image.png" class="Internet" r="25" cx="10.328317030872993" cy="37.5171491536661"></circle>
</g>
</g>
</svg>
しかし、グループを追加したい場合 (私の最終的なデザインには、背景画像、ラベル、およびあらゆる種類の追加要素が必要です) のように:
node = node.data(nodes, function(d) { return d.id;});
node.exit().remove();
node.enter().append('g')
.attr('class', 'node')
.append('image')
.attr('xlink:href', 'some_image.png')
.append('text')
.text(function(d){return d.text;})
... and so on...
私のコードは正しく解釈されているように見えますが (グループを追加し、画像とラベルを追加します)、グループは静的なままで、sim の真ん中に重なり合ったままです。また、座標変換はグループではなく画像に行われるようです。これがシムを壊していると思います：
<svg width="1280" height="960">
<g transform="translate(640,480)">
<g stroke="#000" stroke-width="1.5">
<line x1="197.77682810226557" y1="16.981901068622136" x2="113.3585440445384" y2="176.90457630748227"></line>
<line x1="-99.99450481197604" y1="182.94091641902205" x2="-206.13047480355274" y2="35.36287517221039"></line>
<line x1="-111.19343747422879" y1="-103.71666033252438" x2="9.543859895654657" y2="-238.10758089494877"></line>
<line x1="-111.19343747422879" y1="-103.71666033252438" x2="73.69734375869983" y2="-114.13138675745854"></line>
<line x1="197.77682810226557" y1="16.981901068622136" x2="10.344170477990337" y2="37.84621823186521"></line>
<line x1="-99.99450481197604" y1="182.94091641902205" x2="10.344170477990337" y2="37.84621823186521"></line>
<line x1="-111.19343747422879" y1="-103.71666033252438" x2="10.344170477990337" y2="37.84621823186521"></line>
<line x1="197.77682810226557" y1="16.981901068622136" x2="73.69734375869983" y2="-114.13138675745854"></line>
</g>
<g prop="nodes" stroke="#000" stroke-width="1.5">
<g class="node"><image xlink:href="some_image.png" x="0" y="0" height="72" width="72" style="z-index: 3;"></image></g>
<g class="node"><image xlink:href="some_image.png" x="-7.373688780783198" y="6.754902942615239" height="72" width="72" style="z-index: 3;"></image></g>
<g class="node"><image xlink:href="some_image.png" x="1.2363864559502138" y="-14.087985964343622" height="72" width="72" style="z-index: 3;"></image></g>
<g class="node"><image xlink:href="some_image.png" x="10.538470205147267" y="13.745568221620495" height="72" width="72" style="z-index: 3;"></image></g>
<g class="node"><image xlink:href="some_image.png" x="-19.694269706308575" y="-3.4836390075862327" height="72" width="72" style="z-index: 3;"></image></g>
<g class="node"><image xlink:href="some_image.png" x="18.866941955758957" y="-12.001604111035421" height="72" width="72" style="z-index: 3;"></image></g>
<g class="node"><image xlink:href="some_image.png" x="-6.358980820385529" y="23.65509169134563" height="72" width="72" style="z-index: 3;"></image></g>
<g class="node"><image xlink:href="some_image.png" x="-12.194453649142762" y="-23.479678451778437" height="72" width="72" style="z-index: 3;"></image></g>
</g>
</g>
</svg>
グループを使用するとすべてが台無しになることはかなり確信していますが、グループを適切に使用する方法について頭を悩ませることはできません。
どんな助けにも感謝します。
スニペット形式での完全な強制レイアウトは次のとおりです。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Parse tester</title>
<script src="https://d3js.org/d3.v4.min.js" type="text/javascript"></script>
</head>
<body>
<script>
var nodes = [
{id:0 , label:'branch1' , name:'branch1'},
{id:1 , label:'branch2' , name:'branch2'},
{id:2 , label:'branch3' , name:'branch3'},
{id:3 , label:'leaf1' , name:'leaf1'},
{id:4 , label:'leaf2' , name:'leaf2'},
{id:5 , label:'leaf3' , name:'leaf3'},
{id:6 , label:'center' , name:'center'},
{id:7 , label:'leaf23' , name:'leaf23'}
];
var links = [
{source:0 ,target:3, distance:150, weight:1},
{source:1 ,target:4, distance:150, weight:1},
{source:2 ,target:5, distance:150, weight:1},
{source:7 ,target:0, distance:150, weight:1},
{source:7 ,target:1, distance:150, weight:1},
{source:7 ,target:2, distance:150, weight:1},
{source:1 ,target:6, distance:150, weight:1},
{source:2 ,target:6, distance:150, weight:1}
];
//D3 stuff
var width=640, height = 480;
// add a SVG to the body for our viz
var svg=d3.select('body').append('svg')
.attr('width', width)
.attr('height', height);
var simulation = d3.forceSimulation(nodes)
.force("charge", d3.forceManyBody().strength(-1000))
.force("link", d3.forceLink(links).distance(200))
.force("x", d3.forceX())
.force("y", d3.forceY())
.alphaTarget(1)
.on("tick", ticked);
var g = svg.append("g").attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"),
link = g.append("g").attr("stroke", "#000").attr("stroke-width", 1.5).selectAll(".link"),
node = g.append("g").attr("stroke", "#000").attr("stroke-width", 1.5).selectAll(".node");
restart();
function restart() {
// Apply the general update pattern to the nodes.
node = node.data(nodes, function(d) { return d.id;});
node.exit().remove();
node = node.enter()
.append('g')
.append('image')
.attr('xlink:href', 'http://i.imgur.com/Rx4N3wh.png')
.attr('width',25)
.attr('height',25)
.attr('x', function (d) {return d.x;})
.attr('y', function (d) {return d.y;})
.merge(node);
node.enter().selectAll('g').append('text')
.attr('text-anchor', 'middle')
.attr('dy', '.35em')
.attr('y', -40)
.text(function (d) {
return d.label
});
// Apply the general update pattern to the links.
link = link.data(links, function(d) { return d.source.id + "-" + d.target.id; });
link.exit().remove();
link = link.enter().append("line").merge(link);
// Update and restart the simulation.
simulation.nodes(nodes);
simulation.force("link").links(links);
simulation.alpha(1).restart();
}
//*/
function ticked() {
node.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
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; });
}
</script>