For reference, I have taken sample code from Mike Bostock's Bar Chart Example. At all places I have commented original code and replaced it with new code to convert given example with Floating Scale.
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August 29, 2015 14:13
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Bar Chart - Floating Scale
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| letter | frequency | |
|---|---|---|
| A | 0.082 | |
| B | 0.015 | |
| C | 0.028 | |
| D | 0.043 | |
| E | 0.127 | |
| F | 0.023 | |
| G | 0.02 | |
| H | 0.061 | |
| I | 0.07 | |
| J | 0.002 | |
| K | 0.008 | |
| L | 1 | |
| M | 1.05 | |
| N | 0.067 | |
| O | 0.075 | |
| P | 0.019 | |
| Q | 1.1 | |
| R | 0.06 | |
| S | 1.05 | |
| T | 0.091 | |
| U | 0.028 | |
| V | 0.01 | |
| W | 0.024 | |
| X | 0.002 | |
| Y | 0.02 | |
| Z | 0.001 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body | |
| { | |
| font: sans-serif; | |
| } | |
| .bar | |
| { | |
| fill: steelblue; | |
| } | |
| .bar:hover | |
| { | |
| fill: brown; | |
| } | |
| .axis | |
| { | |
| font: 10px sans-serif; | |
| } | |
| .axis path, .axis line | |
| { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .x.axis path | |
| { | |
| display: none; | |
| } | |
| .floating | |
| { | |
| stroke: #FF0000; | |
| } | |
| .floatingLabel | |
| { | |
| fill: #FF0000; | |
| } | |
| </style> | |
| <body> | |
| <div style="padding: 10px;"> | |
| <label> | |
| Add new <b><i>Floating</i></b> axis line <i>(Value in %)</i></label> | |
| <input id="myValue" type="text" value="12" /> | |
| <input type="button" value="Add" onclick="updateValues()" /> | |
| </div> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="https://darshit-shah.github.io/d3.floatingScale.js"></script> | |
| <script> | |
| var margin = { top: 20, right: 50, bottom: 30, left: 40 }, | |
| width = 960 - margin.left - margin.right, | |
| height = 450 - margin.top - margin.bottom; | |
| var x = d3.scale.ordinal().rangeRoundBands([0, width], .1); | |
| //Replaced | |
| //var y = d3.scale.linear().range([height, 0]); | |
| var y = d3.svg.floatingScale().range([height, 0]).ticks(5, "%"); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom"); | |
| //Replaced | |
| //var yAxis = d3.svg.axis().scale(y).orient("left"); | |
| var yAxis = y.axis().orient("left"); | |
| var svg = d3.select("body").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 data = null; | |
| var min = Infinity; | |
| var max = -Infinity; | |
| d3.csv("data.csv", type, function (error, file_data) { | |
| data = file_data; | |
| file_data = null; | |
| x.domain(data.map(function (d) { return d.letter; })); | |
| y.domain([0, d3.max(data, function (d) { return d.frequency; })]); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(yAxis) | |
| .append("text") | |
| .attr("transform", "rotate(-90)") | |
| .attr("y", 6) | |
| .attr("dy", ".71em") | |
| .style("text-anchor", "end") | |
| .text("Frequency"); | |
| var bars = svg.selectAll(".bar") | |
| .data(data); | |
| bars.enter().append("rect") | |
| .attr("class", "bar") | |
| .attr("x", function (d) { return x(d.letter); }) | |
| .attr("width", x.rangeBand()) | |
| .attr("y", function (d) { return y(d.frequency); }) | |
| .attr("height", function (d) { return height - y(d.frequency); }); | |
| bars.exit().remove(); | |
| //added extra | |
| y.updateChart(updateChart).chart(svg); | |
| }); | |
| function updateChart(delay, duration) { | |
| //added extra | |
| svg.selectAll(".bar").transition().delay(delay).duration(duration).attr("y", function (d) { | |
| return y(d.frequency); | |
| }) | |
| .attr("height", function (d) { | |
| return height - y(d.frequency); | |
| }); | |
| svg.selectAll(".y.axis").transition().delay(delay).duration(duration).call(yAxis); | |
| } | |
| function type(d) { | |
| d.frequency = +d.frequency; | |
| return d; | |
| } | |
| function updateValues() { | |
| var value = parseFloat(document.querySelector('#myValue').value.trim()) / 100; | |
| y.addFloatingScaleLine(value); | |
| } | |
| </script> | |
| </body> |
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