geopandas-projections SKILL.md skillA
geopandas-projections from cxcscmu/skilllearnbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cxcscmu/skilllearnbench/geopandas-projections@git:20260424.d50cf5aPins git:20260424.d50cf5a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cxcscmu/skilllearnbench
- Path
skills/b1-one-shot-claude-haiku-4-5/earthquake-plate-calculation/geopandas-projections/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260424.d50cf5a, committed Apr 24, 2026
- Size
- 2,998 bytes
- Repository stars
- 91
- License
- MIT
Use GeoPandas with coordinate projections to perform accurate spatial calculations and transformations.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# GeoPandas Spatial Projections
## Overview
GeoPandas is built on top of Shapely and Fiona, enabling geographic data manipulation with proper coordinate reference systems (CRS). Using correct projections is critical for accurate distance calculations and spatial operations.
## Installation
```bash
pip install geopandas shapely fiona pyproj
```
## Key Concepts
### Coordinate Reference Systems (CRS)
- **EPSG:4326**: WGS84 (lat/lon), commonly used for geographic data but NOT suitable for distance calculations
- **EPSG:3857**: Web Mercator, used for web mapping
- **Regional Projected CRS**: For accurate local distance calculations (e.g., UTM zones)
### Distance Calculations
Always project to a projected CRS before calculating distances. Geographic CRS (like EPSG:4326) measure in degrees, not kilometers.
## Code Examples
### Creating GeoDataFrames from Points
```python
import geopandas as gpd
from shapely.geometry import Point
import pandas as pd
# From earthquake data
earthquakes_df = pd.read_json('/root/earthquakes_2024.json')
geometry = [Point(xy) for xy in zip(earthquakes_df['longitude'], earthquakes_df['latitude'])]
…Read the whole file at its exact version.
How to install
mdr add cxcscmu/skilllearnbench/geopandas-projections@sha256:e72274e474e18b5dThe line at the top of this page pins the label git:20260424.d50cf5a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_m5yjt62nsk6futr3)
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Versions
The registry has recorded 1 version of this file, committed on Apr 24, 2026.
Audit of the latest version
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- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
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Source
cxcscmu/skilllearnbench · 91 stars · license MIT · pushed 2026-10-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_m5yjt62nsk6futr3 GET https://markdownregistry.com/api/v1/resolve?ref=cxcscmu/skilllearnbench/geopandas-projections GET https://markdownregistry.com/api/v1/blob/e72274e474e18b5dec2c7b930109665e9b1ff537e500718047adec50fdbe4916
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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