git-ashish/README.md

## README.md

      
    Raw
  

              README.md
            
          
    In response to a Stack Overflow question, Tree drawing orientation.

  
## graph.json
{
  "children": [
    {
      "children": [
        {},
        {}
      ]
    }
  ]
}

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

body {
  font: 10px sans-serif;
}

.link {
  fill: none;
  stroke: #000;
}

.border {
  fill: none;
  shape-rendering: crispEdges;
  stroke: #aaa;
}

.node {
  stroke: #fff;
}

</style>
<body>
<script src="http://d3js.org/d3.v2.js?2.9.6"></script>
<script>

var margin = {top: 140, right: 10, bottom: 140, left: 10},
    width = 240 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var orientations = {
  "top-to-bottom": {
    size: [width, height],
    x: function(d) { return d.x; },
    y: function(d) { return d.y; }
  },
  "right-to-left": {
    size: [height, width],
    x: function(d) { return width - d.y; },
    y: function(d) { return d.x; }
  },
  "bottom-to-top": {
    size: [width, height],
    x: function(d) { return d.x; },
    y: function(d) { return height - d.y; }
  },
  "left-to-right": {
    size: [height, width],
    x: function(d) { return d.y; },
    y: function(d) { return d.x; }
  }
};

var svg = d3.select("body").selectAll("svg")
    .data(d3.entries(orientations))
  .enter().append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

svg.append("rect")
    .attr("width", width)
    .attr("height", height)
    .attr("class", "border");

svg.append("text")
    .attr("x", 6)
    .attr("y", 6)
    .attr("dy", ".71em")
    .text(function(d) { return d.key; });

d3.json("graph.json", function(root) {
  svg.each(function(orientation) {
    var svg = d3.select(this),
        o = orientation.value;

    // Compute the layout.
    var tree = d3.layout.tree().size(o.size),
        nodes = tree.nodes(root),
        links = tree.links(nodes);

    // Create the link lines.
    svg.selectAll(".link")
        .data(links)
      .enter().append("path")
        .attr("class", "link")
        .attr("d", d3.svg.diagonal().projection(function(d) { return [o.x(d), o.y(d)]; }));

    // Create the node circles.
    svg.selectAll(".node")
        .data(nodes)
      .enter().append("circle")
        .attr("class", "node")
        .attr("r", 4.5)
        .attr("cx", o.x)
        .attr("cy", o.y);

  });
});

</script>

## thumbnail.png

      
    Raw
  

              thumbnail.png
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	body {
	font: 10px sans-serif;
	}

	.link {
	fill: none;
	stroke: #000;
	}

	.border {
	fill: none;
	shape-rendering: crispEdges;
	stroke: #aaa;
	}

	.node {
	stroke: #fff;
	}

	</style>
	<body>
	<script src="http://d3js.org/d3.v2.js?2.9.6"></script>
	<script>

	var margin = {top: 140, right: 10, bottom: 140, left: 10},
	width = 240 - margin.left - margin.right,
	height = 500 - margin.top - margin.bottom;

	var orientations = {
	"top-to-bottom": {
	size: [width, height],
	x: function(d) { return d.x; },
	y: function(d) { return d.y; }
	},
	"right-to-left": {
	size: [height, width],
	x: function(d) { return width - d.y; },
	y: function(d) { return d.x; }
	},
	"bottom-to-top": {
	size: [width, height],
	x: function(d) { return d.x; },
	y: function(d) { return height - d.y; }
	},
	"left-to-right": {
	size: [height, width],
	x: function(d) { return d.y; },
	y: function(d) { return d.x; }
	}
	};

	var svg = d3.select("body").selectAll("svg")
	.data(d3.entries(orientations))
	.enter().append("svg")
	.attr("width", width + margin.left + margin.right)
	.attr("height", height + margin.top + margin.bottom)
	.append("g")
	.attr("transform", "translate(" + margin.left + "," + margin.top + ")");

	svg.append("rect")
	.attr("width", width)
	.attr("height", height)
	.attr("class", "border");

	svg.append("text")
	.attr("x", 6)
	.attr("y", 6)
	.attr("dy", ".71em")
	.text(function(d) { return d.key; });

	d3.json("graph.json", function(root) {
	svg.each(function(orientation) {
	var svg = d3.select(this),
	o = orientation.value;

	// Compute the layout.
	var tree = d3.layout.tree().size(o.size),
	nodes = tree.nodes(root),
	links = tree.links(nodes);

	// Create the link lines.
	svg.selectAll(".link")
	.data(links)
	.enter().append("path")
	.attr("class", "link")
	.attr("d", d3.svg.diagonal().projection(function(d) { return [o.x(d), o.y(d)]; }));

	// Create the node circles.
	svg.selectAll(".node")
	.data(nodes)
	.enter().append("circle")
	.attr("class", "node")
	.attr("r", 4.5)
	.attr("cx", o.x)
	.attr("cy", o.y);

	});
	});

	</script>