Created
August 12, 2015 13:45
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Add labels to MultiBarCharts in NVD3
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// You need to apply this once all the animations are already finished. Otherwise labels will be placed wrongly. | |
d3.selectAll('.nv-multibar .nv-group').each(function(group){ | |
var g = d3.select(this); | |
// Remove previous labels if there is any | |
g.selectAll('text').remove(); | |
g.selectAll('.nv-bar').each(function(bar){ | |
var b = d3.select(this); | |
var barWidth = b.attr('width'); | |
var barHeight = b.attr('height'); | |
g.append('text') | |
// Transforms shift the origin point then the x and y of the bar | |
// is altered by this transform. In order to align the labels | |
// we need to apply this transform to those. | |
.attr('transform', b.attr('transform')) | |
.text(function(){ | |
// Two decimals format | |
return parseFloat(bar.y).toFixed(2); | |
}) | |
.attr('y', function(){ | |
// Center label vertically | |
var height = this.getBBox().height; | |
return parseFloat(b.attr('y')) - 10; // 10 is the label's magin from the bar | |
}) | |
.attr('x', function(){ | |
// Center label horizontally | |
var width = this.getBBox().width; | |
return parseFloat(b.attr('x')) + (parseFloat(barWidth) / 2) - (width / 2); | |
}) | |
.attr('class', 'bar-values'); | |
}); | |
}); |
Try with b.node().getBBox()
, you'll get all the dimension you need { x: #, y: #, width: #, height: # }
Very useful thanks.
Is it possible to make labels a different colour from the bars?
Yeah it is possible.
Try only add the style attribute.
.attr('class', 'bar-values')
.style("stroke","black");
This is wonderful, thank you.
Is there any way to rotate the labels 90% so that they work their way up the graph?
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Hi,
I need to do the same for "multibarHorizontal"
did below changes
d3.selectAll('.nv-multibarHorizontal
but
b.attr('width');
var barHeight = b.attr('height');
are null.
Thanks!