curran/README.md

## README.md

      
    Raw
  

              README.md
            
          
    This example shows how to make a simple slider using D3.


## index.html
<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
  <style>
    body {
      margin: 0;
      padding: 0;
    }
  </style>
</head>
<body>
  <script>
    var width = 960;
    var height = 500;
    var radius = 20;
    var margin = 100;

    var x1 = margin;
    var x2 = width - margin;
    var y = height / 2;

    var drag = d3.behavior.drag()
      .origin(function(d) { return d; })
      .on("drag", dragmove);

    var svg = d3.select("body").append("svg")
      .attr("width", width)
      .attr("height", height)
      .datum({
        x: width / 2,
        y: height / 2
      });

    var line = svg.append("line")
      .attr("x1", x1)
      .attr("x2", x2)
      .attr("y1", y)
      .attr("y2", y)
      .style("stroke", "black")
      .style("stroke-linecap", "round")
      .style("stroke-width", 5);

    var circle = svg.append("circle")
      .attr("r", radius)
      .attr("cy", function(d) { return d.y; })
      .attr("cx", function(d) { return d.x; })
      .style("cursor", "ew-resize")
      .call(drag);

    function dragmove(d) {

      // Get the updated X location computed by the drag behavior.
      var x = d3.event.x;

      // Constrain x to be between x1 and x2 (the ends of the line).
      x = x < x1 ? x1 : x > x2 ? x2 : x;

      // This assignment is necessary for multiple drag gestures.
      // It makes the drag.origin function yield the correct value.
      d.x = x;

      // Update the circle location.
      circle.attr("cx", x);
    }
  </script>
</body>

## thumbnail.png

      
    Raw
  

              thumbnail.png
	<!DOCTYPE html>
	<head>
	<meta charset="utf-8">
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
	<style>
	body {
	margin: 0;
	padding: 0;
	}
	</style>
	</head>
	<body>
	<script>
	var width = 960;
	var height = 500;
	var radius = 20;
	var margin = 100;

	var x1 = margin;
	var x2 = width - margin;
	var y = height / 2;

	var drag = d3.behavior.drag()
	.origin(function(d) { return d; })
	.on("drag", dragmove);

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height)
	.datum({
	x: width / 2,
	y: height / 2
	});

	var line = svg.append("line")
	.attr("x1", x1)
	.attr("x2", x2)
	.attr("y1", y)
	.attr("y2", y)
	.style("stroke", "black")
	.style("stroke-linecap", "round")
	.style("stroke-width", 5);

	var circle = svg.append("circle")
	.attr("r", radius)
	.attr("cy", function(d) { return d.y; })
	.attr("cx", function(d) { return d.x; })
	.style("cursor", "ew-resize")
	.call(drag);

	function dragmove(d) {

	// Get the updated X location computed by the drag behavior.
	var x = d3.event.x;

	// Constrain x to be between x1 and x2 (the ends of the line).
	x = x < x1 ? x1 : x > x2 ? x2 : x;

	// This assignment is necessary for multiple drag gestures.
	// It makes the drag.origin function yield the correct value.
	d.x = x;

	// Update the circle location.
	circle.attr("cx", x);
	}
	</script>
	</body>