preziotte/index.html

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

body {
    background-color: #36393B;
}

svg {
  position: absolute;
  height: 100%;
  width: 100%;
}

svg path {
  opacity: .5;
  fill: none;
  stroke: #EEE6AB;
  stroke-width: 1px;
  stroke-linecap: rounded;
}

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

.axis text {
  font: 10px sans-serif;
  fill: white;
}

.axis line,
.axis circle {
  fill: none;
  stroke: #EEE6AB;
  stroke-dasharray: 1,4;
}

.axis {
  opacity: 0;
  -webkit-transition: opacity .5s linear;
     -moz-transition: opacity .5s linear;
       -o-transition: opacity .5s linear;
          transition: opacity .5s linear;

}
svg:hover .axis {
	opacity: 0.5;
}

.axis :last-of-type circle {
  stroke: #EEE6AB;
  stroke-dasharray: none;
}

.line {
  fill: none;
  stroke: #EEE6AB;
  stroke-width: 1px;
  stroke-dasharray: 40 10 90 10;
  stroke-dasharray: 10 40 10 90;
  stroke-dashoffset: 0;
  -webkit-animation: dash 1s linear infinite, throb 10s ease infinite;
     -moz-animation: dash 1s linear infinite, throb 10s ease infinite;
          animation: dash 1s linear infinite, throb 10s ease infinite;
}

@keyframes dash {
  100% {
    stroke-dashoffset: 150;
  }
}

@-webkit-keyframes dash {
  100% {
    stroke-dashoffset: 150;
  }
}

@keyframes throb {
  0% {
    transform: scale(.1);
  }
  50% {
    transform: scale(1);
  }
  100% {
    transform: scale(.1);
  }
}

@-webkit-keyframes throb {
  0% {
    transform: scale(.1);
  }
  50% {
    transform: scale(1);
  }
  100% {
    transform: scale(.1);
  }
}

</style>
<body>

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

<script>

// http://bl.ocks.org/mbostock/4583749
// https://en.wikipedia.org/wiki/Butterfly_curve_(transcendental)
// http://calculus-geometry.hubpages.com/hub/Butterfly-Curves-in-Polar-Coordinates-on-a-Graphing-Calculator

var data2 = d3.range(0, 12 * Math.PI, .01).map(function(t) {
	var r = (7 - Math.sin(t) + 2*Math.sin(3*t) + 2*Math.sin(5*t) - Math.sin(7*t) + 0.4*Math.sin(9*t) - 0.4*Math.sin(25*t) + 3*Math.cos(2*t) - 2*Math.cos(4*t) - 0.2*Math.cos(26*t));
  return [t, r];
});

var data = d3.range(0, 20 * Math.PI, .01).map(function(t) {
	var r = Math.exp(Math.sin(t))-2*Math.cos(4*t)+Math.pow(Math.sin((2*t-Math.PI)/24),5);
  return [t, r*100];
});

var width = window.innerWidth,
    height = window.innerHeight-20,
    radius = Math.min(width, height) / 2 - 30;

var r = d3.scale.linear()
    .domain([0, 15])
    .range([0, radius]);

var line = d3.svg.line.radial()
    .radius(function(d) { return r(d[1]); })
    .angle(function(d) { return -d[0] + Math.PI / 2; });

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

var gr = svg.append("g")
    .attr("class", "r axis")
  .selectAll("g")
    .data(r.ticks(5).slice(1))
  .enter().append("g");

gr.append("circle")
    .attr("r", r);

// gr.append("text")
//     .attr("y", function(d) { return -r(d) - 4; })
//     .attr("transform", "rotate(15)")
//     .style("text-anchor", "middle")
//     .text(function(d) { return d; });

var ga = svg.append("g")
    .attr("class", "a axis")
  .selectAll("g")
    .data(d3.range(0, 360, 30))
  .enter().append("g")
    .attr("transform", function(d) { return "rotate(" + -d + ")"; });

ga.append("line")
    .attr("x2", radius);

// ga.append("text")
//     .attr("x", radius + 6)
//     .attr("dy", ".35em")
//     .style("text-anchor", function(d) { return d < 270 && d > 90 ? "end" : null; })
//     .attr("transform", function(d) { return d < 270 && d > 90 ? "rotate(180 " + (radius + 6) + ",0)" : null; })
//     .text(function(d) { return d + "°"; });

console.log(data);
svg.append("path")
    .datum(data)
    .attr("class", "line")
    .attr("d", line);


</script>

<body></body>

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

	body {
	background-color: #36393B;
	}

	svg {
	position: absolute;
	height: 100%;
	width: 100%;
	}

	svg path {
	opacity: .5;
	fill: none;
	stroke: #EEE6AB;
	stroke-width: 1px;
	stroke-linecap: rounded;
	}

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

	.axis text {
	font: 10px sans-serif;
	fill: white;
	}

	.axis line,
	.axis circle {
	fill: none;
	stroke: #EEE6AB;
	stroke-dasharray: 1,4;
	}

	.axis {
	opacity: 0;
	-webkit-transition: opacity .5s linear;
	-moz-transition: opacity .5s linear;
	-o-transition: opacity .5s linear;
	transition: opacity .5s linear;

	}
	svg:hover .axis {
	opacity: 0.5;
	}

	.axis :last-of-type circle {
	stroke: #EEE6AB;
	stroke-dasharray: none;
	}

	.line {
	fill: none;
	stroke: #EEE6AB;
	stroke-width: 1px;
	stroke-dasharray: 40 10 90 10;
	stroke-dasharray: 10 40 10 90;
	stroke-dashoffset: 0;
	-webkit-animation: dash 1s linear infinite, throb 10s ease infinite;
	-moz-animation: dash 1s linear infinite, throb 10s ease infinite;
	animation: dash 1s linear infinite, throb 10s ease infinite;
	}

	@keyframes dash {
	100% {
	stroke-dashoffset: 150;
	}
	}

	@-webkit-keyframes dash {
	100% {
	stroke-dashoffset: 150;
	}
	}

	@keyframes throb {
	0% {
	transform: scale(.1);
	}
	50% {
	transform: scale(1);
	}
	100% {
	transform: scale(.1);
	}
	}

	@-webkit-keyframes throb {
	0% {
	transform: scale(.1);
	}
	50% {
	transform: scale(1);
	}
	100% {
	transform: scale(.1);
	}
	}

	</style>
	<body>

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

	<script>

	// http://bl.ocks.org/mbostock/4583749
	// https://en.wikipedia.org/wiki/Butterfly_curve_(transcendental)
	// http://calculus-geometry.hubpages.com/hub/Butterfly-Curves-in-Polar-Coordinates-on-a-Graphing-Calculator

	var data2 = d3.range(0, 12 * Math.PI, .01).map(function(t) {
	var r = (7 - Math.sin(t) + 2Math.sin(3t) + 2Math.sin(5t) - Math.sin(7t) + 0.4Math.sin(9t) - 0.4Math.sin(25t) + 3Math.cos(2t) - 2Math.cos(4t) - 0.2Math.cos(26*t));
	return [t, r];
	});

	var data = d3.range(0, 20 * Math.PI, .01).map(function(t) {
	var r = Math.exp(Math.sin(t))-2Math.cos(4t)+Math.pow(Math.sin((2*t-Math.PI)/24),5);
	return [t, r*100];
	});

	var width = window.innerWidth,
	height = window.innerHeight-20,
	radius = Math.min(width, height) / 2 - 30;

	var r = d3.scale.linear()
	.domain([0, 15])
	.range([0, radius]);

	var line = d3.svg.line.radial()
	.radius(function(d) { return r(d[1]); })
	.angle(function(d) { return -d[0] + Math.PI / 2; });

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

	var gr = svg.append("g")
	.attr("class", "r axis")
	.selectAll("g")
	.data(r.ticks(5).slice(1))
	.enter().append("g");

	gr.append("circle")
	.attr("r", r);

	// gr.append("text")
	// .attr("y", function(d) { return -r(d) - 4; })
	// .attr("transform", "rotate(15)")
	// .style("text-anchor", "middle")
	// .text(function(d) { return d; });

	var ga = svg.append("g")
	.attr("class", "a axis")
	.selectAll("g")
	.data(d3.range(0, 360, 30))
	.enter().append("g")
	.attr("transform", function(d) { return "rotate(" + -d + ")"; });

	ga.append("line")
	.attr("x2", radius);

	// ga.append("text")
	// .attr("x", radius + 6)
	// .attr("dy", ".35em")
	// .style("text-anchor", function(d) { return d < 270 && d > 90 ? "end" : null; })
	// .attr("transform", function(d) { return d < 270 && d > 90 ? "rotate(180 " + (radius + 6) + ",0)" : null; })
	// .text(function(d) { return d + "°"; });

	console.log(data);
	svg.append("path")
	.datum(data)
	.attr("class", "line")
	.attr("d", line);


	</script>

	<body></body>

	</html>