Click scatter overlayed on image to show scatter info

Hi, I’m trying to overlay scatter on image and only click to show the info, instead of using hover. (1)

Here’s the code of simple hover version:

import numpy as np
import pandas as pd
import holoviews as hv
from bokeh.models import HoverTool

data = np.random.rand(6, 4)
df_test = pd.DataFrame(data, columns=list("ABCD"))

tooltips = [
    ('x', '$x'),
    ('y', '$y'),
    ('z', '@image'),

hover = HoverTool(tooltips=tooltips)
image = hv.Image(data).opts(tools=[hover], cmap='gray')

tooltips = [
    ('x', '@A'),
    ('y', '@B'),

hover = HoverTool(tooltips=tooltips)
scatter = hv.Scatter(df_test, 'A', 'B').opts(size=10, tools=[hover])

image*scatter (1)

This feature is also useful when there’re many closed scatters for hover tool to show. We can zoom in and click to show the info.

If you don’t mind it on the side:

Else, I think you need to create a custom tool.

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