Skip to content

Instantly share code, notes, and snippets.

@monkeycycle
Last active April 29, 2017 19:57
Show Gist options
  • Save monkeycycle/a90d20c85123ba5edd2cab84a7abdacf to your computer and use it in GitHub Desktop.
Save monkeycycle/a90d20c85123ba5edd2cab84a7abdacf to your computer and use it in GitHub Desktop.
Single d3 line chart
Date Close
3-31-1992 0.28
4-30-1992 0.2875
5-29-1992 0.275
6-30-1992 0.25
7-31-1992 0.25
8-31-1992 0.225
9-30-1992 0.225
10-30-1992 0.2125
11-30-1992 0.1375
12-31-1992 0.175
1-29-1993 0.2375
2-26-1993 0.155
3-31-1993 0.175
4-30-1993 0.1625
5-31-1993 0.1875
6-30-1993 0.205
7-30-1993 0.1525
8-31-1993 0.1725
9-30-1993 0.15
10-29-1993 0.15
11-30-1993 0.1425
12-31-1993 0.1625
1-31-1994 0.175
2-28-1994 0.1625
3-31-1994 0.2
<!DOCTYPE html>
<meta charset="utf-8">
<style> /* set the CSS */
.gi-data {
display: none;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 2px;
}
</style>
<body>
<div class="dviz" id="dviz-line"></div>
<!-- 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");
// 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); });
// 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("#dviz-line").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.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 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>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment