Rappresentazione diagrammatica ed effetti di realtà. Il mapping tra arte e visualizzazione

The main aim of this paper is to show how diagrammatic representation works in a specific video/ graphic representation called mapping, especially used and popular in the artistic and scientific fields. The main idea is that mapping involves the use of technology (3D, 2D, motion capture) to make evi- dent not objects but new forms of signification using spatial relations to represent logic connections. Assuming the concept of “diagram” as formuled by C.S. Peirce, we try to figure out how to analyze from a semiotic point of view this particular kind of representation through its process of making of, the “practice” that shapes the image itself, focussing on strategies of visualization and enonciation. This paper centres on discovering how mapping works in different fields taking two examples, one from cinema (Holy Motors, 2012, Leos Carax) and one from public art (Il Segno della memoria, 2013, Studio Azzurro), to explore the sense of diagrammatic representation in scientific, artistic and cultural practices; through showing the concept of mapping by two different point of view, this research wants to highlight the power of diagrammatic representation, that is to show “relational contents”.