Created
October 15, 2012 15:06
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starting point for my labels v.2
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="http://d3js.org/d3.v2.js"></script> | |
| <script type="text/javascript" src="https://raw.github.com/ZJONSSON/d3-plugins/master/force_labels/force_labels.js"></script> | |
| <style> | |
| .anchor { fill:blue} | |
| .labelbox { fill:black;opacity:0.8} | |
| .labeltext { fill:white;font-weight:bold;text-anchor:middle;font-size:16;font-family: serif} | |
| .link { stroke:gray;stroke-width:0.35} | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var w=960,h=500, | |
| x_mean = w/2, | |
| x_std = w/10, | |
| y_mean = h/2, | |
| y_std = h/10, | |
| labelBox,link, | |
| data=[]; | |
| var svg=d3.select("body") | |
| .append("svg:svg") | |
| .attr("height",h) | |
| .attr("width",w) | |
| function refresh() { | |
| // plot the data as usual | |
| anchors = svg.selectAll(".anchor").data(data,function(d,i) { return i}) | |
| anchors.exit().attr("class","exit").transition().duration(1000).style("opacity",0).remove() | |
| anchors.enter().append("circle").attr("class","anchor").attr("r",4).attr("cx",function(d) { return d.x}).attr("cy",function(d) { return h-d.y}) | |
| anchors.transition() | |
| .delay(function(d,i) { return i*10}) | |
| .duration(1500) | |
| .attr("cx",function(d) { return d.x}) | |
| .attr("cy",function(d) { return h-d.y}) | |
| // Now for the labels | |
| anchors.call(labelForce.update) // This is the only function call needed, the rest is just drawing the labels | |
| labels = svg.selectAll(".labels").data(data,function(d,i) { return i}) | |
| labels.exit().attr("class","exit").transition().delay(0).duration(500).style("opacity",0).remove() | |
| // Draw the labelbox, caption and the link | |
| newLabels = labels.enter().append("g").attr("class","labels") | |
| newLabelBox = newLabels.append("g").attr("class","labelbox") | |
| newLabelBox.append("circle").attr("r",11) | |
| newLabelBox.append("text").attr("class","labeltext").attr("y",6) | |
| newLabels.append("line").attr("class","link") | |
| labelBox = svg.selectAll(".labels").selectAll(".labelbox") | |
| links = svg.selectAll(".link") | |
| labelBox.selectAll("text").text(function(d) { return d.num}) | |
| } | |
| function redrawLabels() { | |
| labelBox | |
| .attr("transform",function(d) { return "translate("+d.labelPos.x+" "+d.labelPos.y+")"}) | |
| links | |
| .attr("x1",function(d) { return d.anchorPos.x}) | |
| .attr("y1",function(d) { return d.anchorPos.y}) | |
| .attr("x2",function(d) { return d.labelPos.x}) | |
| .attr("y2",function(d) { return d.labelPos.y}) | |
| } | |
| // Initialize the label-forces | |
| labelForce = d3.force_labels() | |
| .linkDistance(0.0) | |
| .gravity(0) | |
| .nodes([]).links([]) | |
| .charge(-60) | |
| .on("tick",redrawLabels) | |
| // and now for the data functionality | |
| function randomize(count) { | |
| z1=d3.random.normal() | |
| z2=d3.random.normal() | |
| data=data.concat(d3.range(count || 100).map(function(d,i) { return {z1:z1(),z2:z2(),num:data.length+i}})) | |
| correlate() | |
| } | |
| function correlate() { | |
| // var corr = 0; | |
| // data.forEach(function(d) { d.x = x_mean+(d.z1*x_std), | |
| d.y = y_mean+y_std*(corr*d.z1+d.z2*Math.sqrt(1-Math.pow(corr,2)))}) | |
| refresh() | |
| } | |
| randomize() | |
| </script> | |
| </body> | |
| </html> |
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