Showing legend by defaults and allowing richer customizability #459

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1. LucaMarconato

   added

   spatialproteomics

   on May 13, 2025
2. MeyerBender commented on May 14, 2025

   

   MeyerBender

   on May 14, 2025

   Contributor

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   Example code snippet.

   import spatialdata as sd
   import spatialdata_plot
   import matplotlib.pyplot as plt
   import numpy as np
   
   # example data
   image = sd.models.Image2DModel.parse(
       np.random.rand(4, 100, 100), transformations=None, dims=("c", "x", "y"), c_coords=["DAPI", "CD4", "CD8", "FOXP3"]
   )
   sdata = sd.SpatialData(images={"image": image})
   
   fig, ax = plt.subplots(1, 2)
   
   # plotting a single channel
   sdata.pl.render_images(channel='DAPI').pl.show(ax=ax[0])
   
   # plotting multiple channels
   sdata.pl.render_images(channel=['CD4', 'CD8', 'FOXP3']).pl.show(ax=ax[1])
   

   Currently returns this:

   
3. timtreis

   added a commit that references this issue on Apr 3, 2026

   Add channels_as_categories parameter to render_images (#459)

   ...

   c43161d
4. timtreis commented on Apr 4, 2026

   

   timtreis

   on Apr 4, 2026

   Member

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   Hey @MeyerBender, does #576 address your feature request?
5. timtreis

   added

   enhancementNew feature or requestNew feature or request

   on Apr 4, 2026
6. MeyerBender commented on Apr 7, 2026

   

   MeyerBender

   on Apr 7, 2026

   Contributor

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   Hi @timtreis, yes, this is looking really good! One minor thing, I think if you call it channels_as_categories, it needs to be really clear what it does in the docs. Wondering if calling it something like legend or channel_legend would make more sense, but that might be confusing with the colorbar argument for single-channel images...
7. timtreis commented on Apr 7, 2026

   

   timtreis

   on Apr 7, 2026

   Member

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   How about channels_as_legend?
8. MeyerBender commented on Apr 8, 2026

   

   MeyerBender

   on Apr 8, 2026

   Contributor

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   Yeah that works :)

   👍React with 👍1Reacted by Tim Treis
9. timtreis

   closed this as completedin #576on Apr 8, 2026