Data visualisation system

A virtual environment is provided for displaying multidimensional models of data. Embodiments of the system provide an interface which allows a user to navigate intuitively and efficiently between alternative views of the data represented in the model, and to combine additional data categories with the existing model. Embodiments of the system draw upon cellular data stored in a database structure to represent the data in a graphical form on a visual display, wherein cellular data are data partitioned by at least two interrelated data categories into discrete 'cells'. Models may be manipulated, viewed and compared using a user control device, such as a touch screen display. Alterations to the data stored in the database may be represented by commensurate changes to the objects displayed in the model, and the relational forms and shapes formed between the categories of data.