Created
August 10, 2012 02:05
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Monotone Interpolation Bug
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
font: 10px sans-serif; | |
} | |
.axis path, .axis line { | |
fill: none; | |
stroke: #000; | |
shape-rendering: crispEdges; | |
} | |
.line { | |
fill: none; | |
stroke: steelblue; | |
stroke-width: 1.5px; | |
} | |
.dot { | |
fill: white; | |
stroke: steelblue; | |
stroke-width: 1.5px; | |
} | |
</style> | |
<body> | |
<script src="https://raw.github.com/gist/e8e1c7e95e9431fa8cfd/42386af6963bda27bcf9a945e469e6134ff549f4/d3.v2.js"></script> | |
<script> | |
var data = [ | |
[new Date(2001, 11, 1), 5], | |
[new Date(2002, 0, 1), 4.5], | |
[new Date(2003, 0, 1), 5.5], | |
[new Date(2004, 0, 1), 5], | |
[new Date(2005, 0, 1), 6], | |
[new Date(2006, 0, 1), 3] | |
]; | |
var margin = {top: 10, right: 10, bottom: 20, left: 40}, | |
width = 960 - margin.left - margin.right, | |
height = 500 - margin.top - margin.bottom; | |
var x = d3.time.scale() | |
.domain([new Date(2001, 0, 1), new Date(2006, 0, 1)]) | |
.range([0, width]); | |
var y = d3.scale.linear() | |
.domain([0, 6]) | |
.range([height, 0]); | |
var xAxis = d3.svg.axis() | |
.scale(x) | |
.orient("bottom"); | |
var yAxis = d3.svg.axis() | |
.scale(y) | |
.orient("left"); | |
var line = d3.svg.line() | |
.interpolate("monotone") | |
.x(function(d) { return x(d[0]); }) | |
.y(function(d) { return y(d[1]); }); | |
var svg = d3.select("body").append("svg") | |
.datum(data) | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
svg.append("g") | |
.attr("class", "x axis") | |
.attr("transform", "translate(0," + height + ")") | |
.call(xAxis); | |
svg.append("g") | |
.attr("class", "y axis") | |
.call(yAxis); | |
svg.append("path") | |
.attr("class", "line") | |
.attr("d", line); | |
svg.selectAll(".dot") | |
.data(data) | |
.enter().append("circle") | |
.attr("class", "dot") | |
.attr("cx", line.x()) | |
.attr("cy", line.y()) | |
.attr("r", 3.5); | |
</script> |
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