Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
d3
<!DOCTYPE html>
<meta charset="utf-8">
<style>
/* CSS goes here. */
body {
font: 12px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.x.axis path {
display: line;
}
.y.axis path {
display: line;
}
.grid .tick {
stroke: black;
stroke-width: 0.2px;
opacity: 5;
}
.rect {
fill:black;
stroke:none;
}
.line {
fill: none;
stroke: #1c9099;
stroke-width: 3.5px;
}
</style>
<body>
<div class="titles-top">
<h1 class="title"> Test one line </h2
<h2 class= "subtitle"> Test one line Test one line </h2>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
// Set the dimensions of the canvas / graph
// Set the dimensions of the canvas / graph
var margin = {top: 50, right: 20, bottom: 30, left: 50},
width = 900 - margin.left - margin.right,
height = 300 - margin.top - margin.bottom;
padding = 1;
// Parse the date / time
var parseDate = d3.time.format("%d-%b-%y").parse,
formatDate = d3.time.format("%b"),
bisectDate = d3.bisector(function(d) { return d.date; }).left;
// Set the ranges
var x = d3.time.scale().range([0, width]);
var y = d3.scale.linear().range([height, 0]);
// Define the axes
var xAxis = d3.svg.axis().scale(x)
.orient("bottom")
.tickFormat(d3.time.format("%b"));
var yAxis = d3.svg.axis().scale(y)
.orient("left");
// Define the line
var line = d3.svg.line()
.interpolate("cardinal")
.x(function(d) { return x(d.date); })
.y(function(d) { return y(d.close); });
// Adds the svg canvas
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 + ")");
var lineSvg = svg.append("g");
var focus = svg.append("g")
.style("display", "none");
// Get the data
d3.csv("data.csv", function(error, data) {
data.forEach(function(d) {
d.date = parseDate(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.
lineSvg.append("path")
.attr("class", "line")
.attr("d", line(data));
// Add the X Axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
// Add the Y Axis
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
// append the x line
focus.append("line")
.attr("class", "x")
.style("stroke", "grey")
.style("stroke-dasharray", "4")
.style("stroke-width", 2.8)
.style("opacity", 5)
.attr("y1", -y)
.attr("y2", height);
// append the y line
focus.append("line")
.attr("class", "y")
.style("stroke", "grey")
.style("stroke-dasharray", "4")
.style("stroke-width", 2.8)
.style("opacity", 5)
.attr("x1", width)
.attr("x2", width);
// append the circle at the intersection
focus.append("circle")
.attr("class", "y")
.style("fill", "white")
.style("stroke", "#1c9099")
.style("stroke-width", 4)
.attr("r", 7);
// place the value at the intersection
focus.append("text")
.attr("class", "y1")
.style("opacity", 0.8)
.style("background", "white")
.attr("dx", -5)
.attr("dy", "-15");
focus.append("text")
.attr("class", "y2")
.attr("dx", -5)
.attr("dy", "-15");
// place the date at the intersection
focus.append("text")
.attr("class", "y3")
.style("opacity", 0.8)
.attr("dx", -5)
.attr("dy", "-30");
focus.append("text")
.attr("class", "y4")
.attr("dx", -5)
.attr("dy", "-30");
// append the rectangle to capture mouse
svg.append("rect")
.attr("width", width)
.attr("height", height)
.style("fill", "none")
.style("pointer-events", "all")
.on("mouseover", function() { focus.style("display", null); })
.on("mouseout", function() { focus.style("display", "none"); })
.on("mousemove", mousemove);
function mousemove() {
var x0 = x.invert(d3.mouse(this)[0]),
i = bisectDate(data, x0, 1),
d0 = data[i - 1],
d1 = data[i],
d = x0 - d0.date > d1.date - x0 ? d1 : d0;
focus.select("circle.y")
.attr("transform",
"translate(" + x(d.date) + "," +
y(d.close) + ")");
focus.select("text.y1")
.attr("transform",
"translate(" + x(d.date) + "," +
y(d.close) + ")")
.text(d.close);
focus.select("text.y2")
.attr("transform",
"translate(" + x(d.date) + "," +
y(d.close) + ")")
.text(d.close);
focus.select("text.y3")
.attr("transform",
"translate(" + x(d.date) + "," +
y(d.close) + ")")
.text(formatDate(d.date));
focus.select("text.y4")
.attr("transform",
"translate(" + x(d.date) + "," +
y(d.close) + ")")
.text(formatDate(d.date));
focus.select(".x")
.attr("transform",
"translate(" + x(d.date) + "," +
y(d.close) + ")")
.attr("y2", height - y(d.close));
focus.select(".y")
.attr("transform",
"translate(" + width * -1 + "," +
y(d.close) + ")")
.attr("x2", width + width);
}
});
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.