forked from interwebjill's block: D3 Multiple Area Chart
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<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var svg = d3.select("svg"),
margin = {top: 20, right: 20, bottom: 30, left: 50},
width = +svg.attr("width") - margin.left - margin.right,
height = +svg.attr("height") - margin.top - margin.bottom,
g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var parseDate = d3.timeParse("%Y/%m/%d %H:%M");
var color = d3.scaleOrdinal()
.domain(["PVkW", "TBLkW"])
.range(["rgba(249, 208, 87, 0.7)", "rgba(54, 174, 175, 0.65)"]);
var x = d3.scaleTime().range([0, width]),
y = d3.scaleLinear().range([height, 0]),
z = color;
var area = d3.area()
.curve(d3.curveMonotoneX)
.x(function(d) { return x(d.date); })
.y0(y(0))
.y1(function(d) { return y(d.kW); });
d3.csv("kW_zoomed.csv", type, function(error, data) {
if (error) throw error;
var sources = data.columns.slice(1).map(function(id) {
return {
id: id,
values: data.map(function(d) {
return {date: d.date, kW: d[id]};
})
};
});
console.log(sources);
x.domain(d3.extent(data, function(d) { return d.date; }));
y.domain([
0,
d3.max(sources, function(c) { return d3.max(c.values, function(d) { return d.kW; }); })
]);
z.domain(sources.map(function(c) { return c.id; }));
g.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
g.append("g")
.attr("class", "axis axis--y")
.call(d3.axisLeft(y))
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", "0.71em")
.attr("fill", "#000")
.text("Power, kW");
var source = g.selectAll(".area")
.data(sources)
.enter().append("g")
.attr("class", function(d) { return `area ${d.id}`; })
source.append("path")
.attr("d", function(d) { return area(d.values); })
.style("fill", function(d) { return z(d.id); })
});
function type(d, _, columns) {
d.date = parseDate(d.date);
for (var i = 1, n = columns.length, c; i < n; ++i) d[c = columns[i]] = +d[c];
return d;
}
</script>
</body>
</html>
https://d3js.org/d3.v4.min.js