README.md

## README.md

      
        

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              README.md
            
          
        
      
    
  
    I'm making a chord layout visualization of all the relationships in David Foster Wallace's Infinite Jest, using this. Converting this diagram into a square matrix for the chord layout is taking serious time. Before I got too far I wanted to check if this many chords would render. The result is the above black hole. Hover over the perimiter to see what looks like a black hole. Matrix creation code taken from this Syntagmatic block.  

  

  

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

#circle circle {
  fill: none;
  pointer-events: all;
}

.group path {
  fill-opacity: .5;
}

path.chord {
  stroke: #000;
  stroke-width: .25px;
}

#circle:hover path.fade {
  display: none;
}

</style>
<body>
<script src="http://d3js.org/d3.v3.js"></script>
<script>

var width = 510,
	height = 510
	outerRadius = Math.min(width, height) / 2 - 10,
	innerRadius = outerRadius - 24;

// the 3 pieces needed for Chord Diagram
// arc generator
var arc = d3.svg.arc()
	.innerRadius(innerRadius)
	.outerRadius(outerRadius);

// chord layout
var layout = d3.layout.chord()
	.padding(.04)
	.sortSubgroups(d3.descending)
	.sortChords(d3.ascending);

// chord generator
var path = d3.svg.chord()
	.radius(innerRadius);

var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height)
  .append("g")
    .attr("id", "circle") // #circle
    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

svg.append("circle")
	.attr("r", outerRadius);

// the estimated size of my forthcoming infinite jest matrix
var matrix = d3.range(300).map(function(row) {
  return d3.range(300).map(function(col) {
    return Math.pow(Math.random(),1.5);
  });
});

// compute the chord layout
layout.matrix(matrix);

// add a group per character
// each group is a row in the matrix
var group = svg.selectAll(".group")
	.data(layout.groups)
  .enter()
    .append("g")
    .attr("class", "group")
    .on("mouseover", mouseover);

// add the group arc
var groupPath = group.append("path")
	.attr("id", function(d, i) { return "group" + i; })
	.attr("d", arc)
	.style("fill", "black");

// add the chords
var chord = svg.selectAll(".chord")
	.data(layout.chords)
  .enter()
    .append("path")
    .attr("class", "chord")
    .style("fill", function(d, i){
    	if ((d.source.value == 2) && (d.target.value == 2)) { // family
    	  return "tomato";
    	} else {
    	  return "#1a9850";
    	}
    })
    .attr("d", path);

function mouseover(d, i) {
  chord.classed("fade", function(p) {
    return p.source.index != i && p.target.index != i;
  });
}
</script>

## thumbnail.png

      
        

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              thumbnail.png