I am trying to have a span bar on my bokeh plot that can be dragged across a plot by a user. As I slides it would show a different value, e.g. the cumulative integral of the function.
PanEnd events in
I will say if you can settle for a user clicking somewhere, and moving the span in response to the click. that’s probably considerably simpler logic than handling the click/drag interactions.
PolyDrawTool will let users drag and move a multi-line out of the box, however:
- you may not want the other features it provides, e.g. deleting the line
- it cannot be infinite like a span
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