# Clutter Reduction

Clutter (caused by too many edges crossing over each other) is a common problem in node-link diagrams.

The following are a few clutter reduction techniques:

* **Edge Bundling**\
  ![](/files/-M5-0Tvc0ApsOyvt7ZB2)
* **Clustering**\
  ![](/files/-M5-0TvftPxZapCZKJ67)
* **Drawing Edges on Demand (or) Removing the Edges**\
  ![](/files/-M5-0Tvh7iakpQC04mka)\
  The edges in the above visualization appear on hovering over a node
* **Aggregation/Simplification**\
  ![](/files/-M5-0TvjkOJ3QOzNo38D)The technique above shows **Motif Simplification**. The idea is to aggregate together nodes and edges that can be simplified.


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