Obsidian-MBPM4
a4e1c875f0
Affected files: .obsidian/workspace.json 0 Journal/0 Daily/2025-07-21.md Temporary/Pandas.md
20 lines
444 B
Markdown
20 lines
444 B
Markdown
---
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title: Pandas
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created_date: 2025-07-21
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updated_date: 2025-07-21
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aliases:
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tags:
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---
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# Pandas
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## Stack, Unstack
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Unstack converts a multi index into a column index
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Stack converts a multi column into a multi index
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## Melting and Pivoting
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They are very specific --> you can do stack and unstack to achieve the same result
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## get_dummies()
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You can get categorical data (sex: male / female) into 2 columns: sex_Male (0 / 1), sex_Female (0/ 1)
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