Brooklyn Train Misfit Map - High Degree

by dshipper

HTML

<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script>
<script type="application/json" id="mis">
{
        "nodes": [{
            "name": "I don't want to have to walk far to get to the train",
                "group": "1",
                "number": "0"
        }, {
            "name": "I want to be able to go anywhere inside the city quickly",
                "group": "1",
                "number": "1"
        }, {
            "name": "I want to be able to go another inter-city transportation hub quickly",
                "group": "1",
                "number": "2"
        }, {
            "name": "I want to transfer as few times as possible",
                "group": "1",
                "number": "3"
        }, {
            "name": "I want to to be able to use my phone while in transit",
                "group": "1",
                "number": "4"
        }, {
            "name": "I want to be able to sit down on longer journeys",
                "group": "1",
                "number": "5"
        }, {
            "name": "During rush hour I don't want to be delayed",
                "group": "1",
                "number": "6"
        }, {
            "name": "During rush hour I want to be able to have personal space (not be crammed like a sardine)",
                "group": "1",
                "number": "7"
        }, {
            "name": "I don't want to spend more than a few dollars per trip",
                "group": "1",
                "number": "8"
        }, {
            "name": "I want to be able to track how many people are using the train",
                "group": "1",
                "number": "9"
        }, {
            "name": "I want to be able to track where people are going",
                "group": "1",
                "number": "10"
        }, {
            "name": "If I'm rushing to make a train, I don't want to be held up by having to buy a MetroCard",
                "group": "1",
               ...

CSS

.node {
    stroke: #fff;
    stroke-width: 1.5px;
}
.link {
    stroke: #999;
    stroke-opacity: .6;
}

h3 {
    color: #1ABC9C;
    text-align:center;  
    font-style: italic;
    font-size: 14px;
    font-family: "Helvetica";
}

JavaScript

//Constants for the SVG
var width = 640,
    height = 480;

//Set up the colour scale
var color = d3.scale.category20();



//Set up the force layout
var force = d3.layout.force()
    .charge(-500)
    .linkDistance(30)
    .size([width, height]);

//Append a SVG to the body of the html page. Assign this SVG as an object to svg
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var node_drag = d3.behavior.drag()
        .on("dragstart", dragstart)
        .on("drag", dragmove)
        .on("dragend", dragend);
    function dragstart(d, i) {
        force.stop() // stops the force auto positioning before you start dragging
    }
    function dragmove(d, i) {
        d.px += d3.event.dx;
        d.py += d3.event.dy;
        d.x += d3.event.dx;
        d.y += d3.event.dy;
    }
    function dragend(d, i) {
        d.fixed = true; // of course set the node to fixed so the force doesn't include the node in its auto positioning stuff
        force.resume();
    }
    function releasenode(d) {
        d.fixed = false; // of course set the node to fixed so the force doesn't include the node in its auto positioning stuff
        //force.resume();
    }


//Read the data from the mis element 
var mis = document.getElementById('mis').innerHTML;
graph = JSON.parse(mis);
graphRec=JSON.parse(JSON.stringify(graph)); //Add this line

var tip = d3.tip()
    .attr('class', 'd3-tip')
    .offset([-10, 0])
    .html(function (d) {
    return  d.name + "";
})
svg.call(tip);


//Creates the graph data structure out of the json data
force.nodes(graph.nodes)
    .links(graph.links)
    .start();

//Create all the line svgs but without locations yet
var link = svg.selectAll(".link")
    .data(graph.links)
    .enter().append("line")
    .attr("class", "link")
    .style("stroke-width", function (d) {
    return Math.sqrt(d.value);
});

//Do the same with the circles for the nodes - no 
var node = svg.selectAll(".node")
    .data(graph.nodes)
...