Looking for recommendations on integrating c3.js chart library into an Angular 6 project. Any advice or suggestions would be greatly appreciated!
Looking for recommendations on integrating c3.js chart library into an Angular 6 project. Any advice or suggestions would be greatly appreciated!
Apologies, I'm not familiar with how the C3 library works, but I have now gained some knowledge.
C3 creates rectangle charts using paths, so using
d3.selectAll('rect')is not effective.
To rectify this, you should use: d3.selectAll('path')
Refer to this guide for better understanding or simply paste the following code below your initialized C3 chart code
If interested, here is a link to a sample code snippet. The d3 library was not functioning on my end, so I switched from
import d3 from d3 to
import * as d3 from 'd3';
You can initialize the C3 chart by using this
chart.bindto = '#chart';
YOUR CHART IS NOW DRAWN
Next, add the following code to create rounded top corners – this only works after the chart has been drawn. Please read the explanation carefully
// Select all path elements within the SVG
d3.selectAll('path').each(function(){
var x = chart.internal.x // Retrieve xScale from C3
var height = chart.internal.height // Get the chart height from C3
var data= d3.select(this).data()[0] // Fetch data from the path element in D3
var y = chart.internal.y // Obtain Yscale
var path = d3.select(this).attr('d') // Get the 'd' attribute of the path
var pathArray = path.split('L')// Customize path
var rx = 7 // Set rounded x value
var ry = 7 // Set rounded y value
// Exclude any paths you don't want to be rounded
if (data.x === undefined) return
if (data.id == 'data2') return
// Make necessary alterations for rounding
d3.select(this).attr('d', function(d,i){
// Manipulate coordinates for aesthetic roundness
...
return a
})
})
Your chart now features top-rounded corners.
Please note that bottom-rounding is not included in the provided dummy code. If needed, make sure to adjust accordingly.
NOTE: To ensure proper resizing, consider adding this function and call it whenever the chart changes size
Feel free to utilize the following code snippet:
d3.selectAll("rect") // select all rectangle
.attr("rx", 10) // set the x corner curve radius
.attr("ry", 10); // set the y corner curve radius
If you are unsure about whether there is an alternative function in c3 that can be invoked, consider creating one yourself.
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