scverse / scverse/scanpy

Uns categorical colour maping as a dictionary

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Description

  • [ x] Additional function parameters / changed functionality / changed defaults?
  • New analysis tool: A simple analysis tool you have been using and are missing in sc.tools?
  • New plotting function: A kind of plot you would like to seein sc.pl?
  • External tools: Do you know an existing package that should go into sc.external.*?
  • Other?

When determining colours of categorical variables in uns they are based on alphabetical order (if I am not mistaken) - being represented just as an ordered list. Thus it is a bit inconvenient to change colours, especially if categories change during the analysis - the whole order changes and the mapping breaks. Would it be possible to use a dictionary of colours as values and categories as keys (with a default for any categories missing colours)?

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Research direction

The issue names no files, tests, or entry points. Start by locating where categorical colours in uns are assigned and represented, then check how category changes affect that mapping. Done means colour dictionaries can use categories as keys while missing categories receive defaults.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data-visualization
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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