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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <div>Drag data points to re-render chart</div>
              body {
	background-color: #111;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
div {
	margin: 20px auto 0;
	color: #aaa;
	font-weight: 100;
svg {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);

.xaxis path,
.xaxis line,
.yaxis path,
.yaxis line {
    stroke: #aaa;
    fill: none;
    shape-rendering: crispEdges;

.xaxis text,
.yaxis text {
    font-family: sans-serif;
    font-size: 11px;
    fill: #aaa;

.datapoint {
    cursor: pointer;
    stroke: #111;
    fill: rgba(0, 150, 255, .75);
    stroke-width: 7;

.lineChart {
    fill: none;
    stroke-width: 3;
    stroke: rgba(100,100,100, 1);
              let w = 800;
let h = 400;
let padding = 25;
let dataset = [
	[10, 10],
	[20, 50],
	[30, 40],
	[40, 80],
	[50, 90],
	[60, 50],
	[70, 70],
	[80, 60],
	[90, 10],
	[100, 50],
	[110, 40],
	[120, 70],
	[130, 20],
	[140, 40],
	[150, 30]

/*create svg element*/
let svg = d3
	.attr("width", w)
	.attr("height", h)
	.attr("id", "chart");

let drag = d3.behavior
	.on("dragstart", dragstarted)
	.on("drag", dragged)
	.on("dragend", dragended);

/*x scale*/
let xScale = d3.scale
	.domain([0, d3.max(dataset, d => d[0])])
	.range([padding, w - padding]);

/*y scale*/
let yScale = d3.scale
	.domain([0, d3.max(dataset, d => d[1])])
	.range([h - padding, padding]);

/*x axis*/
let xAxis = d3.svg

/*append x axis*/
		class: "xaxis",
		transform: `translate(0, ${h - padding})`

/*y axis*/
let yAxis = d3.svg

/*append y axis*/
		class: "yaxis",
		transform: `translate(${padding}, 0)`

/*define line*/
let lines = d3.svg
	.x(d => xScale(d[0]))
	.y(d => yScale(d[1]))

/*append line*/
let path = svg.append("path").attr({
	d: lines(dataset),
	class: "lineChart"

	.style("opacity", 0)
	.style("opacity", 1);

/*add points*/
let points = svg

/*point attributes*/
	.attr("cy", 0)
	.delay((d, i) => i * 100 + 500)
		cx: d => xScale(d[0]),
		cy: d => yScale(d[1]),
		r: 7,
		class: "datapoint",
		id: (d, i) => i
	.style("opacity", 1);

let xMax = d3.max(dataset, d => d[0]),
	yMax = d3.max(dataset, d => d[1]);

function dragstarted() {
	d3.select(this).classed("dragging datapoint", true);

function dragged() {
		cx: Math.max(padding, Math.min(d3.event.x, w - padding)),
		cy: Math.max(padding, Math.min(d3.event.y, h - padding))

function dragended() {
	d3.select(this).classed("datapoint", true);
	// get id of dragged point
	let id = d3.select(this).attr("id"),
		// get new absolute position coordinates of the point
		xPos = d3.select(this).attr("cx"),
		yPos = h - d3.select(this).attr("cy");

	// convert absolute position coordinates relative to scales
	xPos = (xPos - padding) * (xMax / (w - padding * 2));
	yPos = (yPos - padding) * (yMax / (h - padding * 2));
	dataset[id][0] = xPos;
	dataset[id][1] = yPos;

	// update line
		.attr("d", lines(dataset));

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