Hover tool on hv.Area

The hover tool on an Area chart does not show any information for me. Here’s a small example:

import numpy as np
import holoviews as hv
hv.extension('bokeh')

# create some example data
python=np.array([2, 3, 7, 5, 26, 221, 44, 233, 254, 265, 266, 267, 120, 111])
pypy=np.array([12, 33, 47, 15, 126, 121, 144, 233, 254, 225, 226, 267, 110, 130])
jython=np.array([22, 43, 10, 25, 26, 101, 114, 203, 194, 215, 201, 227, 139, 160])

dims = dict(kdims='time', vdims='memory')
python = hv.Area(python, label='python', **dims)
pypy   = hv.Area(pypy,   label='pypy',   **dims)
jython = hv.Area(jython, label='jython', **dims)

overlay = (python * pypy * jython).options('Area', fill_alpha=0.5, tools=['hover'])
overlay.relabel("Area Chart") + hv.Area.stack(overlay).relabel("Stacked Area Chart")

I would except the hover information to show up either on any location inside the area with the nearest x value and respective y value, or at least show up when hovering the borderline of an area.

bokeh: 1.0.0rc4 holoviews: 1.11.0a10

[whfreelove]

@SandervandenOord sorry for getting your intent wrong!

tooltips_logs = [
  ('Time', '@time{%H:%M:%S.%3N}'),
  ('Value', '@measurement{0,0}'),
  ('Target', '@target{0,0}')
]
formatters_logs = {
    'time': 'datetime'
}
hover_logs = HoverTool(tooltips=tooltips_logs, formatters=formatters_logs, mode='vline')

hv_log_area = hv.Area(data, 'time', ['measurement', 'target'])
hv_log_curve = hv.Curve(data, 'time', ['measurement', 'target']).opts(tools=[hover_logs])

Where data is a Pandas Dataframe containing at least those three columns. For context, these are some logs with timestamps, measured values, and intended target value.

In the HoverTool setup, mode='vline' gets you the behavior of showing the tooltip while in the area. It doesn’t quite work when zoomed in, however, since the Curve hover tooltip only shows when the matching segment of line on the same x is visible.

[jlstevens]

I will close this issue in favor of discussion on the more recent issue on this topic referenced above (https://github.com/holoviz/holoviews/issues/5375). Please feel free to weigh in with your thoughts there!