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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