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@LiangGou

LiangGou/README.md

Last active April 30, 2016 06:32
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Small multiples with radial area charts
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README.md

This is an example of small multiples with radial area charts.

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index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
svg {
font: 10px sans-serif;
padding: 10px;
}
.frame {
shape-rendering: crispEdges;
}
.frame {
fill: none;
stroke: #aaa;
stroke-opacity: 0.75;
}
.feature-cell {
opacity: 0.6;
}
.feature-cell:hover {
opacity: 1;
}
.feature-area {
*fill: lightsteelblue;
fill-opacity: 0.4;
stroke-width: 1;
}
.feature-line {
*stroke: lightsteelblue;
stroke-opacity: 1;
stroke-width: 1;
fill-opacity: 0;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var width = 960,
size = 150,
cw = 60, //cell width
ch = 60, //cell hight
padding = 4,
nCol = 15; //Math.floor((width - padding) / size);
var color = d3.scale.category20();
var x = d3.scale.linear()
.range([padding / 2, cw - padding / 2]);
var y = d3.scale.linear()
.range([ch - padding / 2, padding / 2]);
var outerRadius = ch / 2 - padding / 2,
innerRadius = 12;
var angle = d3.scale.linear()
.range([0, 2 * Math.PI]);
var radius = d3.scale.linear()
.range([innerRadius, outerRadius]);
var area = d3.svg.area.radial()
.interpolate("cardinal-closed")
.angle(function(d, i) {
return angle(i);
})
.innerRadius(function(d) {
return radius(0);
})
.outerRadius(function(d) {
return radius(d);
});
var area0 = d3.svg.area.radial()
.interpolate("cardinal-closed")
.angle(function(d, i) {
return angle(i);
})
.innerRadius(function(d) {
return radius(0);
})
.outerRadius(function(d) {
return radius(0);
});
function generateData(nFeatures, mBins) {
return d3.range(nFeatures).map(function(i) {
return {
"name": "feature" + i,
"col": i % nCol,
"row": Math.floor(i / nCol),
"bins": d3.range(mBins).map(function(j) {
return Math.random();
})
};
});
}
var fdata = generateData(100, 20);
//console.log("fdata", fdata);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", ch * (Math.floor(fdata.length / nCol) + 1) + padding)
.append("g")
.attr("transform", "translate(" + padding + "," + padding / 2 + ")");
var cell = svg.selectAll(".feature-cell")
.data(fdata)
.enter().append("g")
.attr("class", "feature-cell")
.attr("transform", function(d) {
return "translate(" + (d.col * cw + cw / 2) + "," + (d.row * ch + ch / 2) + ")";
})
.each(featurePlot);
function featurePlot(f) {
var _cell = d3.select(this);
// Extend the domain slightly to match the range of [0, 2π].
angle.domain([0, f.bins.length - 0.88]);
radius.domain([0, 1]);
_cell.append("path")
.datum(f.bins)
.attr("class", "feature-area")
.style("fill", function() {
return color(f.name);
})
.style("stroke", function() {return color(f.name);})
.attr("d", area0)
.transition()
.duration(750)
.attr("d", area);
// _cell.append("path")
// .datum(f.bins)
// .attr("class", "feature-line")
// .style("stroke", function() {
// return color(f.name);
// })
// .attr("d", fline);
}
d3.select(self.frameElement).style("height", ch * (Math.floor(fdata.length / nCol) + 1) + padding + 20 + "px");
</script>
</body>
</html>
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