LUE is software supporting the representation and numerical simulation of geographical systems. Using LUE, model developers can develop models using a syntax that looks very similar to map algebra, in either Python or C++. Given such a model, modellers can simulate real-world geographical systems with a large extent and at high resolutions. LUE models can be executed on small laptops and on large cluster partitions.

LUE is the result of multiple research projects performed by the Computational Geography group at Utrecht University in the Netherlands. One of the focus areas of this group is to improve on the concepts and design of numerical simulation frameworks for geographical systems, with respect to their functionality and performance.

LUE supports both agent-based and field-based modelling of geographical systems, with the support for field-based modelling currently being the most mature.