Built with blockbuilder.org
forked from romsson's block: simple line chart from dataset
license: mit |
Built with blockbuilder.org
forked from romsson's block: simple line chart from dataset
[{"name": "A", "value": 10, "date": "2016-01"}, | |
{"name": "B", "value": 30, "date": "2016-02"}, | |
{"name": "C", "value": 20, "date": "2016-03"}, | |
{"name": "D", "value": 40, "date": "2016-04"}, | |
{"name": "E", "value": 50, "date": "2016-05"}, | |
{"name": "F", "value": 20, "date": "2016-06"}, | |
{"name": "G", "value": 10, "date": "2016-07"}, | |
{"name": "H", "value": 15, "date": "2016-08"}, | |
{"name": "I", "value": 38, "date": "2016-09"}, | |
{"name": "J", "value": 60, "date": "2016-10"}, | |
{"name": "K", "value": 28, "date": "2016-11"}, | |
{"name": "L", "value": 19, "date": "2016-12"} | |
] |
<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<script src="https://d3js.org/d3.v3.min.js"></script> | |
<style> | |
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
.line { | |
fill: none; | |
stroke: black; | |
stroke-width: 1.5px; | |
} | |
</style> | |
</head> | |
<body> | |
<script> | |
// Feel free to change or delete any of the code you see in this editor! | |
var svg = d3.select("body").append("svg") | |
.attr("width", 960) | |
.attr("height", 500) | |
var width = 800; | |
var height = 400; | |
// http://bl.ocks.org/zanarmstrong/raw/05c1e95bf7aa16c4768e/ | |
var parseDate = d3.time.format("%Y-%m"); | |
var displayDate = d3.time.format("%b %y"); | |
var displayValue = d3.format(",.0f"); | |
// Ordinal scale | |
var x = d3.scale.ordinal() | |
.rangeRoundBands([0, width], .5); | |
var y = d3.scale.linear() | |
.range([height, height - 200]); | |
var line = d3.svg.line() | |
.x(function(d) { return x(d.name); }) | |
.y(function(d) { return y(d.value); }); | |
var g = svg.append("g") | |
.attr("transform", "translate(20, 0)") | |
d3.json("dataset.json", function(data) { | |
// Pre-processing | |
data.forEach(function(d) { | |
d.value;// = +d.value; | |
d["date"] = parseDate.parse(d["date"]); | |
}); | |
x.domain(data.map(function(d) { return d.name; })); | |
y.domain([0, d3.max(data, function(d) { return d.value; })]); | |
svg.selectAll("text").data(data).enter() | |
.append("text") | |
.text(function(d, i) { return displayDate(d.date); }) | |
.attr("y", 420) | |
.attr("x", function(d) { return x(d.name); }) | |
.style("font-size", 10) | |
.style("font-family", "monospace") | |
.style("fill", "black"); | |
//on écrit les valeurs en blanc pour les rendre invisibles | |
g.selectAll(".value").data(data).enter() | |
.append("text") | |
.text(function(d, i) { return displayValue(d.value); }) | |
.attr("class", "value") | |
.attr("y", function(d) { return y(d.value)-10; }) | |
.attr("x",function(d) { return x(d.name)-10;}) | |
.style("font-size", 20) | |
.style("font-family", "monospace") | |
.style("fill", "white"); | |
g.selectAll("path").data([data]).enter().append("path") | |
.attr("class", "line") | |
.attr("d", line); | |
// .style("stroke-dasharray", ("3, 3")); | |
g.selectAll("line").data(data).enter().append("line") // attach a line | |
.attr("class", "ligne") | |
.style("stroke", "white") // colour the line in white | |
.style("stroke-dasharray", ("3, 3")) // dashes | |
.attr("x1", function(d) {return x(d.name);}) // x position of the first end of the line | |
.attr("y1", function(d) {return y(d.value);}) // y position of the first end of the line | |
.attr("x2",function(d) {return x(d.name);} ) // x position of the second end of the line | |
.attr("y2",400 ) | |
g.selectAll("dot") | |
.attr("id",function (d,i) {return "id_"+i;}) | |
.data(data) | |
.enter().append("circle") | |
.attr("r", 8) | |
.attr("cx", function(d) { return x(d.name); }) | |
.attr("cy", function(d) { return y(d.value); }) | |
.style("fill", "grey") | |
.style("opacity", 0.5) | |
.on("mouseover", function(d) { | |
d3.select(this).style("fill", "red").style("opacity", 1); | |
d3.selectAll(".value").filter(function(e) { | |
return d === e; | |
}).style("fill", "black") | |
d3.selectAll(".ligne").filter(function(e) { | |
return d === e; | |
}).style("stroke", "black"); | |
}) | |
.on("mouseout", function(d) { | |
d3.select(this).style("fill","grey").style("opacity",0.5) | |
d3.selectAll(".value").style("fill","white") | |
d3.selectAll(".ligne").style("stroke","white"); | |
}) | |
}); | |
</script> | |
</body> |