Dear Bokeh team,
Thanks for all the great work. I keep finding amazing functionalities every day and Bokeh has changed my workflow considerably.
After researching the documentation and previous threads the functionality I still cannot figure any way to select/filter ColumnDataSource’s columns either with JSCallback directly on the source object or by updating the “stackers” object (I am doing this on a vbar_stack glyph). My interpretation is that only rows can be filtered (either with JScallbacks or CDS view).
My objective is, in a standalone HTML file, to use a JScallback dropdown to filter rows of a CDS but also reduce the columns displayed based on another condition (or to find another functionality which would allow to do such things, maybe CDSview but it does not appear to be possible).
In addition, or in lieu, I would like to be able to see the column name in the HoverTooltip (as you would in Excel for instance). I have read all the discussion on the topic and besides having multiple HoverTools for each lines it does not seem possible. Ideally, i would want to find a way/hack to display the stackers (in my vbar_stack glyph) or more generally column’s names in the tooltips.
To be clear, I am not expecting to find the perfect code but an indication whether any of this is possible would go a long way.