InViTo: An interactive visualisation tool to support spatial decision processes

Since spatial decision processes have to deal with large number of actors, opinions and interests, literature commonly agrees in recognising data sharing and communication as essential in achieving decisional tasks (Van den Brink et al., 2007; MacEachren et al., 2004). The following chapter describes a methodological instrument for managing data, namely the Interactive Visualisation Tool (InViTo). InViTo aims at supporting spatial decision-making processes by proposing a framework for data knowledge. Principally based on Grasshopper, a free plug-in for McNeel’s Rhinoceros, InViTo combines GIS data with CAD drawings and raster images for generating interactive spatial visualisations. It is conceived to display in real time the relationships between the territory and planning choices; thus, it is particularly indicated for stimulating discussions and sharing information in collaborative processes. Its high flexibility allows its use in different case studies with a variety of purposes and scales. Innovative elements in approaching spatial decision processes are discussed.