This is the code for Chapter 4, Figure 20 from D3.js in Action demonstrating several d3.svg.line() interpolation options.
Ch. 4, Fig. 20 - D3.js in Action
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<html> | |
<head> | |
<title>D3 in Action Chapter 4 - Example 11</title> | |
<meta charset="utf-8" /> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
</head> | |
<style> | |
svg { | |
height: 500px; | |
width: 500px; | |
border: 1px solid gray; | |
} | |
line { | |
shape-rendering: crispEdges; | |
stroke: #000000; | |
} | |
line.minor { | |
stroke: #777777; | |
stroke-dasharray: 2,2; | |
} | |
path.domain { | |
fill: none; | |
stroke: black; | |
} | |
</style> | |
<body> | |
<div id="viz"> | |
<svg> | |
</svg> | |
</div> | |
</body> | |
<footer> | |
<script> | |
d3.csv("tweetdata.csv", lineChart) | |
function lineChart(data) { | |
xScale = d3.scale.linear().domain([1,10.5]).range([20,480]); | |
yScale = d3.scale.linear().domain([0,35]).range([480,20]); | |
xAxis = d3.svg.axis() | |
.scale(xScale) | |
.orient("bottom") | |
.tickSize(480) | |
.tickValues([1,2,3,4,5,6,7,8,9,10]); | |
d3.select("svg").append("g").attr("id", "xAxisG").call(xAxis); | |
yAxis = d3.svg.axis() | |
.scale(yScale) | |
.orient("right") | |
.ticks(10) | |
.tickSize(480) | |
.tickSubdivide(true); | |
d3.select("svg").append("g").attr("id", "yAxisG").call(yAxis); | |
d3.select("svg").selectAll("circle.tweets") | |
.data(data) | |
.enter() | |
.append("circle") | |
.attr("class", "tweets") | |
.attr("r", 5) | |
.attr("cx", function(d) {return xScale(d.day)}) | |
.attr("cy", function(d) {return yScale(d.tweets)}) | |
.style("fill", "black") | |
d3.select("svg").selectAll("circle.retweets") | |
.data(data) | |
.enter() | |
.append("circle") | |
.attr("class", "retweets") | |
.attr("r", 5) | |
.attr("cx", function(d) {return xScale(d.day)}) | |
.attr("cy", function(d) {return yScale(d.retweets)}) | |
.style("fill", "lightgray") | |
d3.select("svg").selectAll("circle.favorites") | |
.data(data) | |
.enter() | |
.append("circle") | |
.attr("class", "favorites") | |
.attr("r", 5) | |
.attr("cx", function(d) {return xScale(d.day)}) | |
.attr("cy", function(d) {return yScale(d.favorites)}) | |
.style("fill", "gray"); | |
tweetLine = d3.svg.line() | |
.interpolate("cardinal") | |
.x(function(d) { | |
return xScale(d.day) | |
}) | |
.y(function(d) { | |
return yScale(d.tweets) | |
}) | |
retweetLine = d3.svg.line() | |
.interpolate("basis") | |
.x(function(d) { | |
return xScale(d.day) | |
}) | |
.y(function(d) { | |
return yScale(d.retweets) | |
}) | |
favLine = d3.svg.line() | |
.interpolate("step-before") | |
.x(function(d) { | |
return xScale(d.day) | |
}) | |
.y(function(d) { | |
return yScale(d.favorites) | |
}) | |
d3.select("svg") | |
.append("path") | |
.attr("d", tweetLine(data)) | |
.attr("fill", "none") | |
.attr("stroke", "darkred") | |
.attr("stroke-width", 2) | |
d3.select("svg") | |
.append("path") | |
.attr("d", retweetLine(data)) | |
.attr("fill", "none") | |
.attr("stroke", "gray") | |
.attr("stroke-width", 3) | |
d3.select("svg") | |
.append("path") | |
.attr("d", favLine(data)) | |
.attr("fill", "none") | |
.attr("stroke", "black") | |
.attr("stroke-width", 2) | |
} | |
</script> | |
</footer> | |
</html> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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day | tweets | retweets | favorites | |
---|---|---|---|---|
1 | 1 | 2 | 5 | |
2 | 6 | 11 | 3 | |
3 | 3 | 8 | 1 | |
4 | 5 | 14 | 6 | |
5 | 10 | 29 | 16 | |
6 | 4 | 22 | 10 | |
7 | 3 | 14 | 1 | |
8 | 5 | 18 | 7 | |
9 | 1 | 30 | 22 | |
10 | 4 | 16 | 15 |
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