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manipulation

Operations for transforming, subsetting, and manipulating AnnData objects.

  • Skills
  • Scientific
  • 2

What it does and how to use it

A skill that teaches Claude Code to do scientific tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/manipulation && curl -fsSL https://doutorai.pt/data/lib/skills__manipulation.md -o .claude/skills/manipulation/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

# Data Manipulation

Operations for transforming, subsetting, and manipulating AnnData objects.

## Subsetting

### By indices
```python
import anndata as ad
import numpy as np

adata = ad.AnnData(X=np.random.rand(1000, 2000))

# Integer indices
subset = adata[0:100, 0:500]  # First 100 obs, first 500 vars

# List of indices
obs_indices = [0, 10, 20, 30, 40]
var_indices = [0, 1, 2, 3, 4]
subset = adata[obs_indices, var_indices]

# Single observation or variable
single_obs = adata[0, :]
single_var = adata[:, 0]
```

### By names
```python
import pandas as pd

# Create with named indices
obs_nam

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