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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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