> ## Documentation Index
> Fetch the complete documentation index at: https://shapely.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Feature Extractor
> Feature Extractor automatically calculates geometric properties **Area, Compactness, AspectRatio, Solidity, Rectangularity, CentroidX, CentroidY** from Shapely geometry objects and organizes them into a structured feature set ready for machine learning.
It eliminates the need to manually extract and organize geometric measurements.
Feature Extractor generates a consistent set of numerical features from any Shapely geometry. This ensures all your data points have the same feature structure, which is **required** by all ML models.
### Use Cases
* **Automated feature creation**: Automatically extract area, perimeter, centroid coordinates, bounding box dimensions, and other properties from geometries.
* **Batch processing**: Extract features from hundreds of geometries at once for large-scale analysis.
* **ML pipeline preparation**: Create the input feature matrix needed for training classification, clustering, or regression models.
