Open map List

Aggregate

In cartographic generalization, aggregate refers to the process of combining multiple smaller spatial features into a single, larger representation to simplify a map while maintaining key spatial patterns and relationships.

Basic

Introduction

Key Aspects of Aggregation in Cartography:

  1. Feature Combination:

    • Multiple individual objects (e.g., small buildings, islands, or lakes) are merged into a single, generalized feature.

  2. Simplification for Readability:

    • Aggregation is used when a map is scaled down, making it impractical to display every individual feature.

  3. Common Examples:

    • Small towns merged into a larger urban area.
    • Groups of small lakes represented as a single larger water body.
    • Forested areas merged into a generalized green region.

  4. Use in Different Map Scales:

    • At a large scale (zoomed in), individual features may be shown separately.
    • At a small scale (zoomed out), aggregation helps avoid clutter and improves clarity.

  5. GIS and Automated Aggregation:

    • GIS (Geographic Information Systems) software often uses algorithms to aggregate features based on spatial proximity or attributes.

Why Aggregate in Maps?

  • Reduces visual clutter.
  • Enhances readability.
  • Maintains essential spatial relationships.
  • Supports efficient map production for different scales.

Outgoing relations