This is a simple graph demonstrating the addition of tooltips with different hyperlinks in a graph. This was written using d3.js v4 and is a follow on to the simple scatter plot example with tooltips and a link 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.
<!DOCTYPE html>
<meta charset="utf-8">
<style> /* set the CSS */
.line {
fill: none;
stroke: steelblue;
stroke-width: 2px;
}
div.tooltip {
position: absolute;
text-align: center;
width: 60px;
height: 28px;
padding: 2px;
font: 12px sans-serif;
background: lightsteelblue;
border: 0px;
border-radius: 8px;
}
</style>
<body>
<!-- load the d3.js library -->
<script src="https://d3js.org/d3.v4.min.js"></script>
<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.top - margin.bottom;
// parse the date / time
var parseTime = d3.timeParse("%d-%b-%y");
var formatTime = d3.timeFormat("%e %B");
// 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(d.date); })
.y(function(d) { return y(d.close); });
var div = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
// 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 = 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 + ")");
// Get the data
d3.csv("data-link.csv", function(error, data) {
if (error) throw error;
// format the data
data.forEach(function(d) {
d.date = parseTime(d.date);
d.close = +d.close;
});
// scale the range of the data
x.domain(d3.extent(data, function(d) { return d.date; }));
y.domain([0, d3.max(data, function(d) { return d.close; })]);
// add the valueline path.
svg.append("path")
.data([data])
.attr("class", "line")
.attr("d", valueline);
// add the dots with tooltips
svg.selectAll("dot")
.data(data)
.enter().append("circle")
.attr("r", 5)
.attr("cx", function(d) { return x(d.date); })
.attr("cy", function(d) { return y(d.close); })
.on("mouseover", function(d) {
div.transition()
.duration(200)
.style("opacity", .9);
div .html(
'<a href= "'+d.link+'" target="_blank">' + //with a link
formatTime(d.date) +
"</a>" +
"<br/>" + d.close)
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY - 28) + "px");
});
// add the X Axis
svg.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
// add the Y Axis
svg.append("g")
.call(d3.axisLeft(y));
});
</script>
</body>
date,close,link
1-May-12,58.13,http://bl.ocks.org/d3noob/c37cb8e630aaef7df30d
30-Apr-12,53.98,http://bl.ocks.org/d3noob/11313583
27-Apr-12,67.00,http://bl.ocks.org/d3noob/11306153
26-Apr-12,89.70,http://bl.ocks.org/d3noob/11137963
25-Apr-12,99.00,http://bl.ocks.org/d3noob/10633856
24-Apr-12,130.28,http://bl.ocks.org/d3noob/10633704
23-Apr-12,166.70,http://bl.ocks.org/d3noob/10633421
20-Apr-12,234.98,http://bl.ocks.org/d3noob/10633192
19-Apr-12,345.44,http://bl.ocks.org/d3noob/10632804
18-Apr-12,443.34,http://bl.ocks.org/d3noob/9692795
17-Apr-12,543.70,http://bl.ocks.org/d3noob/9267535
16-Apr-12,580.13,http://bl.ocks.org/d3noob/9211665
13-Apr-12,605.23,http://bl.ocks.org/d3noob/9167301
12-Apr-12,622.77,http://bl.ocks.org/d3noob/8603837
11-Apr-12,626.20,http://bl.ocks.org/d3noob/8375092
10-Apr-12,628.44,http://bl.ocks.org/d3noob/8329447
9-Apr-12,636.23,http://bl.ocks.org/d3noob/8329404
5-Apr-12,633.68,http://bl.ocks.org/d3noob/8150631
4-Apr-12,624.31,http://bl.ocks.org/d3noob/8273682
3-Apr-12,629.32,http://bl.ocks.org/d3noob/7845954
2-Apr-12,618.63,http://bl.ocks.org/d3noob/6584483
30-Mar-12,599.55,http://bl.ocks.org/d3noob/5893649
29-Mar-12,609.86,http://bl.ocks.org/d3noob/6077996
28-Mar-12,617.62,http://bl.ocks.org/d3noob/5193723
27-Mar-12,614.48,http://bl.ocks.org/d3noob/5141528
26-Mar-12,606.98,http://bl.ocks.org/d3noob/5028304