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Last active August 25, 2016 15:28
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D3-Node Histogram example using d3@v4 https://github.com/bradoyler/d3-node
const D3Node = require('d3-node');
const d3 = require('d3-v4')
const styles = `
.bar rect {
fill: steelblue;
}
.bar text {
fill: #fff;
font: 10px sans-serif;
}`;
var options = {
svgStyles: styles,
d3Module: d3
};
var d3n = new D3Node(options);
// from https://bl.ocks.org/mbostock/3048450
var data = d3.range(1000).map(d3.randomBates(10));
var formatCount = d3.format(",.0f");
var margin = {top: 10, right: 30, bottom: 30, left: 30},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scaleLinear()
.rangeRound([0, width]);
var bins = d3.histogram()
.domain(x.domain())
.thresholds(x.ticks(20))
(data);
var y = d3.scaleLinear()
.domain([0, d3.max(bins, function(d) { return d.length; })])
.range([height, 0]);
var svg = d3n.createSVG()
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var bar = svg.selectAll(".bar")
.data(bins)
.enter().append("g")
.attr("class", "bar")
.attr("transform", function(d) { return "translate(" + x(d.x0) + "," + y(d.length) + ")"; });
bar.append("rect")
.attr("x", 1)
.attr("width", x(bins[0].x1) - x(bins[0].x0) - 1)
.attr("height", function(d) { return height - y(d.length); });
bar.append("text")
.attr("dy", ".75em")
.attr("y", 6)
.attr("x", (x(bins[0].x1) - x(bins[0].x0)) / 2)
.attr("text-anchor", "middle")
.text(function(d) { return formatCount(d.length); });
svg.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
console.log(d3n.svgString());
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