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@larsenmtl
Created August 1, 2018 14:34
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fresh block
license: mit
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.area {
fill: lightsteelblue;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 1.5px;
}
.dot {
fill: white;
stroke: steelblue;
stroke-width: 1.5px;
}
.sliver {
fill: lightsteelblue
}
</style>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var data = d3.range(40).map(function(i) {
if (i === 3 || i === 22) return null;
else return (i % 5) ? {x: i / 39, y: (Math.sin(i / 3) + 2) / 4} : null;
});
var margin = {top: 40, right: 40, bottom: 40, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scaleLinear()
.range([0, width]);
var y = d3.scaleLinear()
.range([height, 0]);
var line = d3.line()
.defined(function(d) { return d; })
.x(function(d) { return x(d.x); })
.y(function(d) { return y(d.y); });
var area = d3.area()
.defined(line.defined())
.x(line.x())
.y1(line.y())
.y0(y(0));
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("path")
.attr("class", "area")
.attr("d", area);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
svg.append("g")
.attr("class", "y axis")
.call(d3.axisLeft(y));
svg.append("path")
.attr("class", "line")
.attr("d", line);
svg.selectAll(".dot")
.data(data.filter(function(d) { return d; }))
.enter().append("circle")
.attr("class", "dot")
.attr("cx", line.x())
.attr("cy", line.y())
.attr("r", 3.5);
svg.selectAll(".sliver")
.data(
data.filter(function(d, i) {
if (!data[i]) return false;
else if (i === 0 && !data[i+1]) return true;
else if (i === data.length - 1 && !data[i-1]) return true;
else if (!data[i-1] && !data[i+1]) return true;
})
)
.enter().append("rect")
.attr("class", "sliver")
.attr("x", function(d){
return x(d.x) - 5;
})
.attr("y", function(d){
return y(d.y) + 3.5;
})
.attr("width", 10)
.attr("height", function(d){
return height - y(d.y) - 3.5;
});
</script>
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