使用Dygraphs显示每个系列的图例

Question

I am rendering multiple independent time series with Dygraphs as described here:

http://dygraphs.com/tests/independent-series.html

The graph is rendered correctly:

However I want the legend to display the value for each and every series. For now only the value of the point closest to the cursor is displayed.

How can I fix this?

Answer 1

There's no built-in support for this.

To dygraphs, a selection always has a specific x-value. There's no notion of a set of points with different x-values that are all selected. That being said, you could roll your own legend behavior using highlightCallback and unhighlightCallback. See this question/answer for an example of someone who did that.