# Concepts

This section of the documentation will discuss the high-level concepts involved in the functionality that Pyresample provides. The descriptions attempt to avoid relying on the code interfaces (objects, functions, etc) to explain the concepts. Tying these concepts to Pyresample code is reserved for the Tutorials and How-Tos sections of the documentation.

- Geolocated Data
  - Points or Pixels
  - Pixel Spacing
  - Model of the Earth
- Projections
  - Projection definitions
- Geometries
  - Swaths
  - Areas
  - Dynamic Areas
- Resampling
  - Algorithms