Created
November 19, 2015 21:28
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D3byEX 4.10: Bar Graph with Margin and Axis
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<!DOCTYPE html> | |
<html> | |
<head> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<meta name="description" content="D3byEX 4.10" /> | |
<meta charset="utf-8"> | |
</head> | |
<body> | |
<script> | |
var data = [55, 44, 30, 23, 17, 14, 16, 25, 41, 61, 85, | |
101, 95, 105, 114, 150, 180, 210, 125, 100, 71, | |
75, 72, 67]; | |
var barWidth = 20, barPadding = 3; | |
var maxValue = d3.max(data); | |
var graphWidth = data.length * (barWidth + barPadding) - barPadding; | |
var margin = { top: 10, right: 10, bottom: 10, left: 50 }; | |
var totalWidth = graphWidth + margin.left + margin.right; | |
var totalHeight = maxValue + margin.top + margin.bottom; | |
var svg = d3.select('body') | |
.append('svg') | |
.attr({ width: totalWidth, height: totalHeight }); | |
svg.append('rect').attr({ | |
width: totalWidth, height: totalHeight, | |
fill: 'white', | |
stroke: 'black', 'stroke-width': 1 | |
}); | |
var mainGroup = svg | |
.append('g') | |
.attr('transform', 'translate(' + margin.left + ',' + margin.top + ")"); | |
mainGroup.append('rect').attr({ | |
fill: 'rgba(0,0,0,0.1)', width: totalWidth - (margin.left + margin.right), | |
height: totalHeight - (margin.bottom + margin.top) | |
}); | |
function xloc(d, i) { return i * (barWidth + barPadding); } | |
function yloc(d) { return maxValue - d; } | |
function translator(d, i) { | |
return "translate(" + xloc(d, i) + "," + yloc(d) + ")"; | |
} | |
var barGroup = mainGroup.selectAll('g') | |
.data(data) | |
.enter() | |
.append('g') | |
.attr('transform', translator); | |
barGroup.append('rect') | |
.attr({ | |
fill: 'steelblue', | |
width: barWidth, | |
height: function (d) { return d; } | |
}); | |
var textTranslator = "translate(" + barWidth / 2 + ",0)"; | |
barGroup.append('text') | |
.text(function(d) { return d; }) | |
.attr({ | |
fill: 'white', | |
'alignment-baseline': 'before-edge', | |
'text-anchor': 'middle', | |
transform: textTranslator | |
}) | |
.style('font', '10px sans-serif'); | |
var leftAxisGroup = svg.append('g'); | |
var axisPadding = 3; | |
leftAxisGroup.attr({ transform: 'translate(' + (margin.left - axisPadding) + ',' + margin.top + ')' }); | |
var scale = d3.scale | |
.linear() | |
.domain([maxValue, 0]) | |
.range([0, maxValue]); | |
var axis = d3.svg.axis() | |
.orient('left') | |
.scale(scale); | |
var axisNodes = leftAxisGroup.call(axis); | |
var domain = axisNodes.selectAll('.domain'); | |
domain.attr({ | |
fill: 'none', | |
'stroke-width': 1, | |
stroke: 'black' | |
}); | |
var ticks = axisNodes.selectAll('.tick line'); | |
ticks.attr({ | |
fill: 'none', | |
'stroke-width': 1, | |
stroke: 'black' | |
}); | |
</script> | |
</body> | |
</html> |
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