Is it possible to use ColumnDataSource with interactive (sliced) legends

[Bryan]

Please see this recent discussion, which more or less also applies as-is to legend_group.

Legend_field, multiple data sources, click_policy: is click_policy supposed to apply to entire data source rather than just one legend item?

I have a plot with two data sources. Each data source is plotted using figure.multi_line. The plot needs to be updated on the fly based on user choices in widgets that allow changing the subset plotted or the preferred color scheme to highlight entries with various properties. The legend also needs to update based on the new color scheme. I use the legend_field option to accomplish this. In response to the widget callbacks, I take my “raw data”, filter it and rerun pandas.groupby to create new…