Drawing trend-line on the line diagram in c3js

Question

I need to draw trend-line on simple line graph in c3js but i can't seem to find a built-in way to do that? If that's not possible, how do i calculate trend-line (linear regression) data to display on the chart?

Thanks

Answer 1

There isn't a built-in solution (yet), but I'll put in my two cents in case someone can create something for c3.js specifically.

You may have to calculate the start/end points using one of these methods:

• How do I calculate a trendline for a graph?
• https://math.stackexchange.com/questions/204020/what-is-the-equation-used-to-calculate-a-linear-trendline/204021#204021

There are also D3.js solutions here:

• http://bl.ocks.org/benvandyke/8459843
• http://www.localwisdom.com/blog/2014/01/get-trend-line-javascript-graph-linear-regression/