plotly / plotly/plotly.py

Add support for multiple imshow on the same plot, with opacity slider

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feature P3
Dominant language
Python
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Forks
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Avg merge
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Merged PRs (30d)
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Description

This displays two imshow images in two different tabs:

import plotly.express as px
import numpy as np
from skimage import io

img = io.imread('https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/240px-Crab_Nebula.jpg')
fig = px.imshow(img)

x = np.random.random((100, 200))
fig2 = px.imshow(x)

fig.show()
fig2.show()

Is there planned support for displaying the two "imshow" on the same plot, with an opacity slider for both layers?

(even if the two 2D-arrays are of different shape - this is possible in matplotlib with the extent parameter of imshow)

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by examining the existing px.imshow behavior shown in the example and how Plotly represents image layers. The issue does not name files or tests; done would mean displaying two possibly different-shaped images on one plot with opacity controls for both layers.

Written by the indexing model from the issue text.

Assessment

Tech stack
numpy, python
Domain
data-visualization
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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