Rendering Transformations??

Rendering Transformations in GeoServer allow the creation of sophisticated, dynamic visualizations of geospatial data. Rendering transformations are defined in an SLD style, and allow transforming of input data into a more effective format for visualization.

A basic overview of rendering transformations is provided in the GeoServer User Manual on Rendering Transformations.

This section describes how to use some of the most powerful rendering transformations.