powersparks/index.html

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

  body {
    font: 10px sans-serif;
  }

  .axis path, .axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
  }

  </style>

  <script src="http://d3js.org/d3.v4.min.js" charset="utf-8"></script>

</head>

<body>
  <div id="chart"></div>
  <p>An example of verticle lines extending from an x-axis using tickSizeInner and tickSizeOuter</p>
</body>

<script>


var margin = {top: 10, right: 30, bottom: 30, left: 30},
    width = 960 - margin.left - margin.right,
    height = 100 - margin.top - margin.bottom;

var x = d3.scaleLinear()
    .domain([0, 25])
    .range([0, width]);
 var y = d3.scaleLinear().domain([0,100]).range([height, 0]);
var data = [1, 2, 3, 5, 8, 13, 21];
var ydata = [10, 90];
var ticksOnBottom = false;
var tickSize = 8;
var tickPadding = 8
var xAxis = d3.axisTop(x)
    //.scale(x)
    //.orient("top")
    .tickValues(data)
    .tickSizeInner(( ticksOnBottom ? tickSize: height - tickSize) )
    .tickSizeOuter( height)
	.tickPadding(( ticksOnBottom ? tickPadding:  -1 *(tickPadding + tickSize )) );
 var yAxis = d3.axisRight(y)
        //.tickValues(ydata)
		    .ticks(0) //either specify number of ticks or add values
		   .tickSizeInner(8)
		   .tickSizeOuter(width);

var svg = d3.select("body").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("g")
    .attr("class", "axis axis--x")
    .attr("transform", "translate(0," + height + ")")
    .call(ticksFromXaxis);
function ticksFromXaxis(g){
    g.call(xAxis);
  var sign =  ticksOnBottom ? 0 : -1;
  g.selectAll(".tick line").attr("y1", sign *  height); //was -35, change of height 40 to 30

}
 svg.append("g")
    .attr("class", "axis axis--y")
    .call(yAxis);
</script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<head>
	<style>

	body {
	font: 10px sans-serif;
	}

	.axis path, .axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	</style>

	<script src="http://d3js.org/d3.v4.min.js" charset="utf-8"></script>

	</head>

	<body>
	<div id="chart"></div>
	<p>An example of verticle lines extending from an x-axis using tickSizeInner and tickSizeOuter</p>
	</body>

	<script>


	var margin = {top: 10, right: 30, bottom: 30, left: 30},
	width = 960 - margin.left - margin.right,
	height = 100 - margin.top - margin.bottom;

	var x = d3.scaleLinear()
	.domain([0, 25])
	.range([0, width]);
	var y = d3.scaleLinear().domain([0,100]).range([height, 0]);
	var data = [1, 2, 3, 5, 8, 13, 21];
	var ydata = [10, 90];
	var ticksOnBottom = false;
	var tickSize = 8;
	var tickPadding = 8
	var xAxis = d3.axisTop(x)
	//.scale(x)
	//.orient("top")
	.tickValues(data)
	.tickSizeInner(( ticksOnBottom ? tickSize: height - tickSize) )
	.tickSizeOuter( height)
	.tickPadding(( ticksOnBottom ? tickPadding: -1 *(tickPadding + tickSize )) );
	var yAxis = d3.axisRight(y)
	//.tickValues(ydata)
	.ticks(0) //either specify number of ticks or add values
	.tickSizeInner(8)
	.tickSizeOuter(width);

	var svg = d3.select("body").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("g")
	.attr("class", "axis axis--x")
	.attr("transform", "translate(0," + height + ")")
	.call(ticksFromXaxis);
	function ticksFromXaxis(g){
	g.call(xAxis);
	var sign = ticksOnBottom ? 0 : -1;
	g.selectAll(".tick line").attr("y1", sign * height); //was -35, change of height 40 to 30

	}
	svg.append("g")
	.attr("class", "axis axis--y")
	.call(yAxis);
	</script>