better legends for line plots

[nschloe]

By default, chartjs line plot legends appear somewhere in a separate field somewhere in the plot, e.g.,

A more user-friendly approach is to attach the labels to the right, like so:

(This is from stargraph, plotted with dufte.) Perhaps it's worth providing this for chart.js, too.

[LeeLenaleee]

You can achieve this by yourself using a simple inline plugin: https://jsfiddle.net/Leelenaleee/hqtn9wLv/10/, For lots of datasets it needs some tweaking so they dont overlap but is a basic concept. although with a lot of datasets in my eyes it loses its value because it doesnt line up with the lines anymore. Because of this I think it might be better to live outside the main lib as a plugin instead of be integrated withing the main lib.

[nschloe]

If implemented properly, the suggested approach is never worse and most of the time better than the current legend approach. To find the optimal position of the labels while preventing overlap, one needs to solve a minimization problem, see here. Not sure if JS as a language is prepared for this.