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@MoritzStefaner

MoritzStefaner/.block

Last active October 15, 2024 16:35
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  1. MoritzStefaner renamed this gist Jan 20, 2020. 1 changed file with 0 additions and 0 deletions.
    0 config.block → .block
    View file
    File renamed without changes.
  2. MoritzStefaner revised this gist Jan 20, 2020. 1 changed file with 1 addition and 0 deletions.
    1 change: 1 addition & 0 deletions config.block
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1 @@
    license: apache-2.0
  3. MoritzStefaner revised this gist Jun 5, 2012. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion index.html
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    Original file line number Diff line number Diff line change
    @@ -9,7 +9,7 @@
    </head>
    <body>
    <script type="text/javascript" charset="utf-8">
    var w = 900, h = 600;
    var w = 960, h = 500;

    var labelDistance = 0;

  4. MoritzStefaner revised this gist Jun 5, 2012. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion index.html
    View file
    Original file line number Diff line number Diff line change
    @@ -9,7 +9,7 @@
    </head>
    <body>
    <script type="text/javascript" charset="utf-8">
    var w = 900, h = 900;
    var w = 900, h = 600;

    var labelDistance = 0;

  5. MoritzStefaner revised this gist Jun 5, 2012. 1 changed file with 11 additions and 11 deletions.
    22 changes: 11 additions & 11 deletions index.html
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    Original file line number Diff line number Diff line change
    @@ -8,8 +8,8 @@
    <script type="text/javascript" src="http://mbostock.github.com/d3/d3.geom.js?2.6.0"></script>
    </head>
    <body>
    <script type="text/javascript" charset="utf-8">
    var w = 900, h = 500;
    <script type="text/javascript" charset="utf-8">
    var w = 900, h = 900;

    var labelDistance = 0;

    @@ -56,23 +56,23 @@

    force.start();

    var force2 = d3.layout.force().nodes(labelAnchors).links(labelAnchorLinks).gravity(1).linkDistance(labelDistance).linkStrength(5).charge(-2000).size([w, h]);
    var force2 = d3.layout.force().nodes(labelAnchors).links(labelAnchorLinks).gravity(0).linkDistance(0).linkStrength(8).charge(-100).size([w, h]);
    force2.start();

    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#AAA");
    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#CCC");

    var node = vis.selectAll("g.node").data(force.nodes()).enter().append("svg:g").attr("class", "node");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99");
    node.append("svg:circle").attr("r", 5).style("fill", "#555").style("stroke", "#FFF").style("stroke-width", 3);
    node.call(force.drag);

    var anchorLink = vis.selectAll("line.anchorLink").data(labelAnchorLinks).enter().append("svg:line").attr("class", "anchorLink").style("stroke", "#999").style("stroke-dasharray", "2,2");

    var anchorNode = vis.selectAll("g.anchorNode").data(force2.nodes()).enter().append("svg:g").attr("class", "anchorNode");
    anchorNode.append("svg:circle").attr("r", 1).style("fill", "#FFF");
    var anchorLink = vis.selectAll("line.anchorLink").data(labelAnchorLinks)//.enter().append("svg:line").attr("class", "anchorLink").style("stroke", "#999");

    anchorNode.append("svg:text").text(function(d, i) {
    var anchorNode = vis.selectAll("g.anchorNode").data(force2.nodes()).enter().append("svg:g").attr("class", "anchorNode");
    anchorNode.append("svg:circle").attr("r", 0).style("fill", "#FFF");
    anchorNode.append("svg:text").text(function(d, i) {
    return i % 2 == 0 ? "" : d.node.label
    }).style("fill", "#966");
    }).style("fill", "#555").style("font-family", "Arial").style("font-size", 12);

    var updateLink = function() {
    this.attr("x1", function(d) {
    @@ -115,7 +115,7 @@

    var shiftX = b.width * (diffX - dist) / (dist * 2);
    shiftX = Math.max(-b.width, Math.min(0, shiftX));
    var shiftY = 0;
    var shiftY = 5;
    this.childNodes[1].setAttribute("transform", "translate(" + shiftX + "," + shiftY + ")");
    }
    });
  6. MoritzStefaner revised this gist Nov 23, 2011. 2 changed files with 18 additions and 17 deletions.
    8 changes: 0 additions & 8 deletions d3.js
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    Original file line number Diff line number Diff line change
    @@ -1,8 +0,0 @@
    // d3.min.js, d3.geom.min.js, d3.layout.min.js

    (function(){function du(a,b,c){function i(a,b){var c=a.__domain||(a.__domain=a.domain()),d=a.range().map(function(a){return(a-b)/h});a.domain(c).domain(d.map(a.invert))}var d=Math.pow(2,(dg[2]=a)-c[2]),e=dg[0]=b[0]-d*c[0],f=dg[1]=b[1]-d*c[1],g=d3.event,h=Math.pow(2,a);d3.event={scale:h,translate:[e,f],transform:function(a,b){a&&i(a,e),b&&i(b,f)}};try{dh.apply(di,dj)}finally{d3.event=g}g.preventDefault()}function dt(){dl&&(d3.event.stopPropagation(),d3.event.preventDefault(),dl=!1)}function ds(){dc&&(dk&&(dl=!0),dr(),dc=null)}function dr(){dd=null,dc&&(dk=!0,du(dg[2],d3.svg.mouse(di),dc))}function dq(){var a=d3.svg.touches(di);switch(a.length){case 1:var b=a[0];du(dg[2],b,de[b.identifier]);break;case 2:var c=a[0],d=a[1],e=[(c[0]+d[0])/2,(c[1]+d[1])/2],f=de[c.identifier],g=de[d.identifier],h=[(f[0]+g[0])/2,(f[1]+g[1])/2,f[2]];du(Math.log(d3.event.scale)/Math.LN2+f[2],e,h)}}function dp(){var a=d3.svg.touches(di),b=-1,c=a.length,d;while(++b<c)de[(d=a[b]).identifier]=dm(d);return a}function dn(){db||(db=d3.select("body").append("div").style("visibility","hidden").style("top",0).style("height",0).style("width",0).style("overflow-y","scroll").append("div").style("height","2000px").node().parentNode);var a=d3.event,b;try{db.scrollTop=1e3,db.dispatchEvent(a),b=1e3-db.scrollTop}catch(c){b=a.wheelDelta||-a.detail*5}return b*.005}function dm(a){return[a[0]-dg[0],a[1]-dg[1],dg[2]]}function da(){d3.event.stopPropagation(),d3.event.preventDefault()}function c_(){cW&&(da(),cW=!1)}function c$(){!cS||(cX("dragend"),cS=null,cV&&(cW=!0,da()))}function cZ(){if(!!cS){var a=cS.parentNode;if(!a)return c$();cX("drag"),da()}}function cY(a){return d3.event.touches?d3.svg.touches(a)[0]:d3.svg.mouse(a)}function cX(a){var b=d3.event,c=cS.parentNode,d=0,e=0;c&&(c=cY(c),d=c[0]-cU[0],e=c[1]-cU[1],cU=c,cV|=d|e);try{d3.event={dx:d,dy:e},cR[a].dispatch.apply(cS,cT)}finally{d3.event=b}b.preventDefault()}function cQ(a,b,c){e=[];if(c&&b.length>1){var d=bu(a.domain()),e,f=-1,g=b.length,h=(b[1]-b[0])/++c,i,j;while(++f<g)for(i=c;--i>0;)(j=+b[f]-i*h)>=d[0]&&e.push(j);for(--f,i=0;++i<c&&(j=+b[f]+i*h)<d[1];)e.push(j)}return e}function cP(a,b){a.attr("transform",function(a){return"translate(0,"+b(a)+")"})}function cO(a,b){a.attr("transform",function(a){return"translate("+b(a)+",0)"})}function cK(){return"circle"}function cJ(){return 64}function cI(a,b){var c=(a.ownerSVGElement||a).createSVGPoint();if(cH<0&&(window.scrollX||window.scrollY)){var d=d3.select(document.body).append("svg:svg").style("position","absolute").style("top",0).style("left",0),e=d[0][0].getScreenCTM();cH=!e.f&&!e.e,d.remove()}cH?(c.x=b.pageX,c.y=b.pageY):(c.x=b.clientX,c.y=b.clientY),c=c.matrixTransform(a.getScreenCTM().inverse());return[c.x,c.y]}function cG(a){return function(){var b=a.apply(this,arguments),c=b[0],d=b[1]+bS;return[c*Math.cos(d),c*Math.sin(d)]}}function cF(a){return[a.x,a.y]}function cE(a){return a.endAngle}function cD(a){return a.startAngle}function cC(a){return a.radius}function cB(a){return a.target}function cA(a){return a.source}function cz(a){return function(b,c){return a[c][1]}}function cy(a){return function(b,c){return a[c][0]}}function cx(a){function i(f){if(f.length<1)return null;var i=bZ(this,f,b,d),j=bZ(this,f,b===c?cy(i):c,d===e?cz(i):e);return"M"+g(a(j),h)+"L"+g(a(i.reverse()),h)+"Z"}var b=b$,c=b$,d=0,e=b_,f="linear",g=ca[f],h=.7;i.x=function(a){if(!arguments.length)return c;b=c=a;return i},i.x0=function(a){if(!arguments.length)return b;b=a;return i},i.x1=function(a){if(!arguments.length)return c;c=a;return i},i.y=function(a){if(!arguments.length)return e;d=e=a;return i},i.y0=function(a){if(!arguments.length)return d;d=a;return i},i.y1=function(a){if(!arguments.length)return e;e=a;return i},i.interpolate=function(a){if(!arguments.length)return f;g=ca[f=a];return i},i.tension=function(a){if(!arguments.length)return h;h=a;return i};return i}function cw(a){var b,c=-1,d=a.length,e,f;while(++c<d)b=a[c],e=b[0],f=b[1]+bS,b[0]=e*Math.cos(f),b[1]=e*Math.sin(f);return a}function cv(a){return a.length<3?cb(a):a[0]+ch(a,cu(a))}function cu(a){var b=[],c,d,e,f,g=ct(a),h=-1,i=a.length-1;while(++h<i)c=cs(a[h],a[h+1]),Math.abs(c)<1e-6?g[h]=g[h+1]=0:(d=g[h]/c,e=g[h+1]/c,f=d*d+e*e,f>9&&(f=c*3/Math.sqrt(f),g[h]=f*d,g[h+1]=f*e));h=-1;while(++h<=i)f=(a[Math.min(i,h+1)][0]-a[Math.max(0,h-1)][0])/(6*(1+g[h]*g[h])),b.push([f||0,g[h]*f||0]);return b}function ct(a){var b=0,c=a.length-1,d=[],e=a[0],f=a[1],g=d[0]=cs(e,f);while(++b<c)d[b]=g+(g=cs(e=f,f=a[b+1]));d[b]=g;return d}function cs(a,b){return(b[1]-a[1])/(b[0]-a[0])}function cr(a,b,c){a.push("C",cn(co,b),",",cn(co,c),",",cn(cp,b),",",cn(cp,c),",",cn(cq,b),",",cn(cq,c))}function cn(a,b){return a[0]*b[0]+a[1]*b[1]+a[2]*b[2]+a[3]*b[3]}function cm(a,b){var c=a.length-1,d=a[0][0],e=a[0][1],f=a[c][0]-d,g=a[c][1]-e,h=-1,i,j;while(++h<=c)i=a[h],j=h/c,i[0]=b*i[0]+(1-b)*(d+j*f),i[1]=b*i[1]+(1-b)*(e+j*g);return cj(a)}function cl(a){var b,c=-1,d=a.length,e=d+4,f,g=[],h=[];while(++c<4)f=a[c%d],g.push(f[0]),h.push(f[1]);b=[cn(cq,g),",",cn(cq,h)],--c;while(++c<e)f=a[c%d],g.shift(),g.push(f[0]),h.shift(),h.push(f[1]),cr(b,g,h);return b.join("")}function ck(a){if(a.length<4)return cb(a);var b=[],c=-1,d=a.length,e,f=[0],g=[0];while(++c<3)e=a[c],f.push(e[0]),g.push(e[1]);b.push(cn(cq,f)+","+cn(cq,g)),--c;while(++c<d)e=a[c],f.shift(),f.push(e[0]),g.shift(),g.push(e[1]),cr(b,f,g);return b.join("")}function cj(a){if(a.length<3)return cb(a);var b=1,c=a.length,d=a[0],e=d[0],f=d[1],g=[e,e,e,(d=a[1])[0]],h=[f,f,f,d[1]],i=[e,",",f];cr(i,g,h);while(++b<c)d=a[b],g.shift(),g.push(d[0]),h.shift(),h.push(d[1]),cr(i,g,h);b=-1;while(++b<2)g.shift(),g.push(d[0]),h.shift(),h.push(d[1]),cr(i,g,h);return i.join("")}function ci(a,b){var c=[],d=(1-b)/2,e,f=a[0],g=a[1],h=1,i=a.length;while(++h<i)e=f,f=g,g=a[h],c.push([d*(g[0]-e[0]),d*(g[1]-e[1])]);return c}function 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e.join("")}function cb(a){var b=0,c=a.length,d=a[0],e=[d[0],",",d[1]];while(++b<c)e.push("L",(d=a[b])[0],",",d[1]);return e.join("")}function b_(a){return a[1]}function b$(a){return a[0]}function bZ(a,b,c,d){var e=[],f=-1,g=b.length,h=typeof c=="function",i=typeof d=="function",j;if(h&&i)while(++f<g)e.push([c.call(a,j=b[f],f),d.call(a,j,f)]);else if(h)while(++f<g)e.push([c.call(a,b[f],f),d]);else if(i)while(++f<g)e.push([c,d.call(a,b[f],f)]);else while(++f<g)e.push([c,d]);return e}function bY(a){function g(d){return d.length<1?null:"M"+e(a(bZ(this,d,b,c)),f)}var b=b$,c=b_,d="linear",e=ca[d],f=.7;g.x=function(a){if(!arguments.length)return b;b=a;return g},g.y=function(a){if(!arguments.length)return c;c=a;return g},g.interpolate=function(a){if(!arguments.length)return d;e=ca[d=a];return g},g.tension=function(a){if(!arguments.length)return f;f=a;return g};return g}function bX(a){return a.endAngle}function bW(a){return a.startAngle}function bV(a){return a.outerRadius}function bU(a){return a.innerRadius}function bR(a,b,c){function g(){d=c.length/(b-a),e=c.length-1;return f}function f(b){return c[Math.max(0,Math.min(e,Math.floor(d*(b-a))))]}var d,e;f.domain=function(c){if(!arguments.length)return[a,b];a=+c[0],b=+c[c.length-1];return g()},f.range=function(a){if(!arguments.length)return c;c=a;return g()},f.copy=function(){return bR(a,b,c)};return g()}function bQ(a,b){function e(a){return isNaN(a=+a)?NaN:b[d3.bisect(c,a)]}function d(){var d=0,f=a.length,g=b.length;c=[];while(++d<g)c[d-1]=d3.quantile(a,d/g);return e}var c;e.domain=function(b){if(!arguments.length)return a;a=b.filter(function(a){return!isNaN(a)}).sort(d3.ascending);return d()},e.range=function(a){if(!arguments.length)return b;b=a;return d()},e.quantiles=function(){return c},e.copy=function(){return bQ(a,b)};return d()}function bL(a,b){function f(b){return d[((c[b]||(c[b]=a.push(b)))-1)%d.length]}var c,d,e;f.domain=function(d){if(!arguments.length)return a;a=[],c={};var 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    27 changes: 18 additions & 9 deletions index.html
    View file
    Original file line number Diff line number Diff line change
    @@ -3,13 +3,15 @@
    <head>
    <meta charset="utf-8">
    <title>Force based label placement</title>
    <script src="d3.js" type="text/javascript" charset="utf-8"></script>
    <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.6.0"></script>
    <script type="text/javascript" src="http://mbostock.github.com/d3/d3.layout.js?2.6.0"></script>
    <script type="text/javascript" src="http://mbostock.github.com/d3/d3.geom.js?2.6.0"></script>
    </head>
    <body>
    <script type="text/javascript" charset="utf-8">
    var w = 900, h = 500;

    var labelDistance = 10;
    var labelDistance = 0;

    var vis = d3.select("body").append("svg:svg").attr("width", w).attr("height", h);

    @@ -37,7 +39,7 @@
    links.push({
    source : i,
    target : j,
    weight : 1
    weight : Math.random()
    });
    }
    labelAnchorLinks.push({
    @@ -47,16 +49,20 @@
    });
    };

    var force = d3.layout.force().nodes(nodes).links(links).gravity(1).linkDistance(50).linkStrength(1).charge(-3000).size([w, h]);
    var force = d3.layout.force().size([w, h]).nodes(nodes).links(links).gravity(1).linkDistance(50).charge(-3000).linkStrength(function(x) {
    return x.weight * 10
    });


    force.start();

    var force2 = d3.layout.force().nodes(labelAnchors).links(labelAnchorLinks).gravity(0).linkDistance(labelDistance).linkStrength(10).charge(-500).size([w, h]);
    var force2 = d3.layout.force().nodes(labelAnchors).links(labelAnchorLinks).gravity(1).linkDistance(labelDistance).linkStrength(5).charge(-2000).size([w, h]);
    force2.start();

    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#BBB");
    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#AAA");

    var node = vis.selectAll("g.node").data(force.nodes()).enter().append("svg:g").attr("class", "node");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99").style("stroke", "#FFF").style("stroke-width", "3");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99");
    node.call(force.drag);

    var anchorLink = vis.selectAll("line.anchorLink").data(labelAnchorLinks).enter().append("svg:line").attr("class", "anchorLink").style("stroke", "#999").style("stroke-dasharray", "2,2");
    @@ -94,7 +100,6 @@
    force2.start();

    node.call(updateNode);
    anchorNode.call(updateNode);

    anchorNode.each(function(d, i) {
    if(i % 2 == 0) {
    @@ -106,14 +111,18 @@
    var diffX = d.x - d.node.x;
    var diffY = d.y - d.node.y;

    var shiftX = (diffX - labelDistance) / (labelDistance * 4) * b.width;
    var dist = Math.sqrt(diffX * diffX + diffY * diffY);

    var shiftX = b.width * (diffX - dist) / (dist * 2);
    shiftX = Math.max(-b.width, Math.min(0, shiftX));
    var shiftY = 0;
    this.childNodes[1].setAttribute("transform", "translate(" + shiftX + "," + shiftY + ")");
    }
    });


    anchorNode.call(updateNode);

    link.call(updateLink);
    anchorLink.call(updateLink);

  7. MoritzStefaner revised this gist Nov 18, 2011. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion index.html
    View file
    Original file line number Diff line number Diff line change
    @@ -56,7 +56,7 @@
    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#BBB");

    var node = vis.selectAll("g.node").data(force.nodes()).enter().append("svg:g").attr("class", "node");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99").style("stroke", "#FFF").style("stroke-width", "2");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99").style("stroke", "#FFF").style("stroke-width", "3");
    node.call(force.drag);

    var anchorLink = vis.selectAll("line.anchorLink").data(labelAnchorLinks).enter().append("svg:line").attr("class", "anchorLink").style("stroke", "#999").style("stroke-dasharray", "2,2");
  8. MoritzStefaner revised this gist Nov 18, 2011. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions index.html
    View file
    Original file line number Diff line number Diff line change
    @@ -53,10 +53,10 @@
    var force2 = d3.layout.force().nodes(labelAnchors).links(labelAnchorLinks).gravity(0).linkDistance(labelDistance).linkStrength(10).charge(-500).size([w, h]);
    force2.start();

    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#AAA");
    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#BBB");

    var node = vis.selectAll("g.node").data(force.nodes()).enter().append("svg:g").attr("class", "node");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99").style("stroke", "#FFF").style("stroke-width", "2");
    node.call(force.drag);

    var anchorLink = vis.selectAll("line.anchorLink").data(labelAnchorLinks).enter().append("svg:line").attr("class", "anchorLink").style("stroke", "#999").style("stroke-dasharray", "2,2");
  9. MoritzStefaner revised this gist Nov 18, 2011. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.mkd
    View file
    Original file line number Diff line number Diff line change
    @@ -1,3 +1,3 @@
    A small demo of a pleasant, yet simple label placement algorithm for densely packed visualizations. The basic idea is to have labels orbit around their target node at a fixed distance, but repeal each other, so that they don't overlap, and orient themselves to the outside of clusters. To support that, labels on the right of their target node are left-aligned, and labels on the left of their target node are right-aligned; in between, we interpolate. In this example, one force layout governs the node placement, and the second one the label placement, but of course, the node placement could be computed by any other algorithm.

    I used this label placement in the [http://max-planck-research-networks.net](MPG research networks project) and owe the basic idea to [https://twitter.com/cedrickiefer](Cedric Kiefer).
    I first used this label placement in the [MPG research networks project](http://max-planck-research-networks.net) and owe the basic idea to [Cedric Kiefer](https://twitter.com/cedrickiefer).
  10. MoritzStefaner revised this gist Nov 18, 2011. 3 changed files with 6 additions and 1 deletion.
    2 changes: 2 additions & 0 deletions d3.js
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    Original file line number Diff line number Diff line change
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    // d3.min.js, d3.geom.min.js, d3.layout.min.js

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    2 changes: 1 addition & 1 deletion index.html
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    </head>
    <body>
    <script type="text/javascript" charset="utf-8">
    var w = 900, h = 900;
    var w = 900, h = 500;

    var labelDistance = 10;

    3 changes: 3 additions & 0 deletions readme.mkd
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    A small demo of a pleasant, yet simple label placement algorithm for densely packed visualizations. The basic idea is to have labels orbit around their target node at a fixed distance, but repeal each other, so that they don't overlap, and orient themselves to the outside of clusters. To support that, labels on the right of their target node are left-aligned, and labels on the left of their target node are right-aligned; in between, we interpolate. In this example, one force layout governs the node placement, and the second one the label placement, but of course, the node placement could be computed by any other algorithm.

    I used this label placement in the [http://max-planck-research-networks.net](MPG research networks project) and owe the basic idea to [https://twitter.com/cedrickiefer](Cedric Kiefer).
  11. MoritzStefaner created this gist Nov 18, 2011.
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    124 changes: 124 additions & 0 deletions index.html
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,124 @@
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
    <html lang="en">
    <head>
    <meta charset="utf-8">
    <title>Force based label placement</title>
    <script src="d3.js" type="text/javascript" charset="utf-8"></script>
    </head>
    <body>
    <script type="text/javascript" charset="utf-8">
    var w = 900, h = 900;

    var labelDistance = 10;

    var vis = d3.select("body").append("svg:svg").attr("width", w).attr("height", h);

    var nodes = [];
    var labelAnchors = [];
    var labelAnchorLinks = [];
    var links = [];

    for(var i = 0; i < 30; i++) {
    var node = {
    label : "node " + i
    };
    nodes.push(node);
    labelAnchors.push({
    node : node
    });
    labelAnchors.push({
    node : node
    });
    };

    for(var i = 0; i < nodes.length; i++) {
    for(var j = 0; j < i; j++) {
    if(Math.random() > .95)
    links.push({
    source : i,
    target : j,
    weight : 1
    });
    }
    labelAnchorLinks.push({
    source : i * 2,
    target : i * 2 + 1,
    weight : 1
    });
    };

    var force = d3.layout.force().nodes(nodes).links(links).gravity(1).linkDistance(50).linkStrength(1).charge(-3000).size([w, h]);
    force.start();

    var force2 = d3.layout.force().nodes(labelAnchors).links(labelAnchorLinks).gravity(0).linkDistance(labelDistance).linkStrength(10).charge(-500).size([w, h]);
    force2.start();

    var link = vis.selectAll("line.link").data(links).enter().append("svg:line").attr("class", "link").style("stroke", "#AAA");

    var node = vis.selectAll("g.node").data(force.nodes()).enter().append("svg:g").attr("class", "node");
    node.append("svg:circle").attr("r", 6).style("fill", "#A99");
    node.call(force.drag);

    var anchorLink = vis.selectAll("line.anchorLink").data(labelAnchorLinks).enter().append("svg:line").attr("class", "anchorLink").style("stroke", "#999").style("stroke-dasharray", "2,2");

    var anchorNode = vis.selectAll("g.anchorNode").data(force2.nodes()).enter().append("svg:g").attr("class", "anchorNode");
    anchorNode.append("svg:circle").attr("r", 1).style("fill", "#FFF");

    anchorNode.append("svg:text").text(function(d, i) {
    return i % 2 == 0 ? "" : d.node.label
    }).style("fill", "#966");

    var updateLink = function() {
    this.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;
    });

    }

    var updateNode = function() {
    this.attr("transform", function(d) {
    return "translate(" + d.x + "," + d.y + ")";
    });

    }


    force.on("tick", function() {

    force2.start();

    node.call(updateNode);
    anchorNode.call(updateNode);

    anchorNode.each(function(d, i) {
    if(i % 2 == 0) {
    d.x = d.node.x;
    d.y = d.node.y;
    } else {
    var b = this.childNodes[1].getBBox();

    var diffX = d.x - d.node.x;
    var diffY = d.y - d.node.y;

    var shiftX = (diffX - labelDistance) / (labelDistance * 4) * b.width;
    shiftX = Math.max(-b.width, Math.min(0, shiftX));
    var shiftY = 0;
    this.childNodes[1].setAttribute("transform", "translate(" + shiftX + "," + shiftY + ")");
    }
    });


    link.call(updateLink);
    anchorLink.call(updateLink);

    });

    </script>
    </body>
    </html>