joshkh/Resizing link distance in D3

## Resizing link distance in D3
<!DOCTYPE html>
<meta charset="utf-8">
<style>

.link {
  stroke: #000;
  stroke-width: 1.5px;
}

.node {
  fill: #000;
  stroke: #fff;
  stroke-width: 1.5px;
}

.node.a { fill: #1f77b4; }
.node.b { fill: #ff7f0e; }
.node.c { fill: #2ca02c; }

</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>

<script>

var width = 960,
    height = 500;

var color = d3.scale.category10();

var nodes = [],
    links = [];


var a = {id: "a"}, b = {id: "b"}, c = {id: "c"};
nodes.push(a, b, c);

links.push({source: a, target: b}, {source: a, target: c}, {source: b, target: c});


var force = d3.layout.force()
    .nodes(nodes)
    .links(links)
    .charge(-400)
    .linkDistance(500)
    .size([width, height])
    .on("tick", tick);

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

var node = svg.selectAll(".node"),
    link = svg.selectAll(".link");


function start() {
  link = link.data(force.links(), function(d) { return d.source.id + "-" + d.target.id; });
  link.enter().insert("line", ".node").attr("class", "link");
  link.exit().remove();

  node = node.data(force.nodes(), function(d) { return d.id;});
  node.enter().append("circle").attr("class", function(d) { return "node " + d.id; }).attr("r", 8);
  node.exit().remove();

  force.start();
}

function tick() {
  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; });
}

function updateSize(value) {
  console.log("using value", value);
  force.linkDistance(value * 10);
  force.start();
}
start();


</script>

<form>
  <input id="slide" type="range" name="points" min="0" max="50" step="5" onchange="updateSize(this.value);">
</form>


</html>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	.link {
	stroke: #000;
	stroke-width: 1.5px;
	}

	.node {
	fill: #000;
	stroke: #fff;
	stroke-width: 1.5px;
	}

	.node.a { fill: #1f77b4; }
	.node.b { fill: #ff7f0e; }
	.node.c { fill: #2ca02c; }

	</style>
	<body>
	<script src="http://d3js.org/d3.v3.min.js"></script>
	<script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>

	<script>

	var width = 960,
	height = 500;

	var color = d3.scale.category10();

	var nodes = [],
	links = [];


	var a = {id: "a"}, b = {id: "b"}, c = {id: "c"};
	nodes.push(a, b, c);

	links.push({source: a, target: b}, {source: a, target: c}, {source: b, target: c});


	var force = d3.layout.force()
	.nodes(nodes)
	.links(links)
	.charge(-400)
	.linkDistance(500)
	.size([width, height])
	.on("tick", tick);

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

	var node = svg.selectAll(".node"),
	link = svg.selectAll(".link");



	function start() {
	link = link.data(force.links(), function(d) { return d.source.id + "-" + d.target.id; });
	link.enter().insert("line", ".node").attr("class", "link");
	link.exit().remove();

	node = node.data(force.nodes(), function(d) { return d.id;});
	node.enter().append("circle").attr("class", function(d) { return "node " + d.id; }).attr("r", 8);
	node.exit().remove();

	force.start();
	}

	function tick() {
	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; });
	}

	function updateSize(value) {
	console.log("using value", value);
	force.linkDistance(value * 10);
	force.start();
	}
	start();


	</script>

	<form>
	<input id="slide" type="range" name="points" min="0" max="50" step="5" onchange="updateSize(this.value);">
	</form>


	</html>