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Linear & Ordinal Scales
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<script src="https://d3js.org/d3.v4.min.js"></script> | |
<style type="text/css"> | |
</style> | |
<body> | |
</body> | |
<script> | |
var scales = ["Linear", "Ordinal", "Point", "Band", "Log", "Pow"]; | |
var dataset = [1,3,8,9]; | |
var margin = {top: 20, right: 20, bottom: 20, left: 20}; | |
var width = 800 - margin.left - margin.right, | |
height = 80 - margin.top - margin.bottom; | |
var divs = d3.selectAll(".scaleDiv") | |
.data(scales) | |
.enter().append("div") | |
.attr("class", "div") | |
.each(multiple) | |
function multiple(scaleType) { | |
var svg = d3.select(this).append("svg") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
var scale = d3["scale" + scaleType]() | |
if(scaleType == "Linear") { | |
scale.domain(d3.extent(dataset, function(d) { return d; })) | |
.range([0, width]); | |
} | |
if(scaleType == "Log") { | |
scale.range([0, width]); | |
} | |
if(scaleType == "Pow") { | |
scale.domain(d3.extent(dataset, function(d) { return d; })) | |
.exponent(.1) | |
.range([0, width]); | |
} | |
if(scaleType == "Point") { | |
scale.domain(dataset) | |
.padding([1]) | |
.rangeRound([0, width]); | |
} | |
if(scaleType == "Band") { | |
scale.domain(dataset) | |
.padding([.5]) | |
.rangeRound([0, width]); | |
} | |
if(scaleType == "Ordinal") { | |
scale.domain(dataset) | |
.range([0, 40, 30, width]); | |
} | |
svg.append("text") | |
.attr("y", 10) | |
.text(scaleType); | |
svg.selectAll("." + scaleType) | |
.data(dataset) | |
.enter().append("circle") | |
.attr("r", 5) | |
.attr("cy", 40) | |
.attr("cx", function(d) { return scale(d); }) | |
svg.append("g") | |
.attr("class","x axis") | |
.attr("transform","translate(0," + height + ")") | |
.call(d3.axisBottom(scale)); | |
} | |
</script> | |
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