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Scatterplot with v4

This is a simple line graph demonstrating the addition of scatterplot points to a line graph. This was written using d3.js v4 and is a follow on to the simple graph example here.

This graph is part of the code samples for the update to the book D3 Tips and Tricks to version 4 of d3.js.

date close
1-May-12 58.13
30-Apr-12 53.98
27-Apr-12 67.00
26-Apr-12 89.70
25-Apr-12 99.00
24-Apr-12 130.28
23-Apr-12 166.70
20-Apr-12 234.98
19-Apr-12 345.44
18-Apr-12 443.34
17-Apr-12 543.70
16-Apr-12 580.13
13-Apr-12 605.23
12-Apr-12 622.77
11-Apr-12 626.20
10-Apr-12 628.44
9-Apr-12 636.23
5-Apr-12 633.68
4-Apr-12 624.31
3-Apr-12 629.32
2-Apr-12 618.63
30-Mar-12 599.55
29-Mar-12 609.86
28-Mar-12 617.62
27-Mar-12 614.48
26-Mar-12 606.98
<!DOCTYPE html>
<meta charset="utf-8">
<style> /* set the CSS */
.line {
fill: none;
stroke: steelblue;
stroke-width: 2px;
<!-- load the d3.js library -->
<script src=""></script>
// set the dimensions and margins of the graph
var margin = {top: 20, right: 20, bottom: 30, left: 50},
width = 960 - margin.left - margin.right,
height = 500 - - margin.bottom;
// parse the date / time
var parseTime = d3.timeParse("%d-%b-%y");
// set the ranges
var x = d3.scaleTime().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);
// define the line
var valueline = d3.line()
.x(function(d) { return x(; })
.y(function(d) { return y(d.close); });
// append the svg obgect to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
var svg ="body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + + margin.bottom)
"translate(" + margin.left + "," + + ")");
// Get the data
d3.csv("data.csv", function(error, data) {
if (error) throw error;
// format the data
data.forEach(function(d) { = parseTime(;
d.close = +d.close;
// Scale the range of the data
x.domain(d3.extent(data, function(d) { return; }));
y.domain([0, d3.max(data, function(d) { return d.close; })]);
// Add the valueline path.
.attr("class", "line")
.attr("d", valueline);
// Add the scatterplot
.attr("r", 5)
.attr("cx", function(d) { return x(; })
.attr("cy", function(d) { return y(d.close); });
// Add the X Axis
.attr("transform", "translate(0," + height + ")")
// Add the Y Axis
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Great indeed! Though I believe the code should be updated as to d3 version 5. I got here from the Leanpub link of the book.

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d3noob commented Jan 22, 2021

Great indeed! Though I believe the code should be updated as to d3 version 5. I got here from the Leanpub link of the book.

Apologies Sir. I will correct in the v5 book. In the meantime, here is a link to the v5 Scatterplot version - And here is a link to the v6 version - There is also the v6 version of the book free to download from here if you want it. Thanks for the heads up.

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