Geometry and Urban Shape of the City of Nola through the Drawings of the De Nola by A. Leone (1514)

This paper focuses on the geometric and graphic analysis of Table III among the four attached to the De Nola Treatise by Ambrogio Leone (1514), in which the author studied the relationship between the shape of the ancient city with the Renaissance one through geometric simplifications as polygonal regular surfaces (square, hexagon and dodecagon) and circular one. These assessments have been extensively described in Chapter II of the Treatise. Our analysis consisted in re-reading the text in which the author describes Table III, in the vectoral re-drawing of the table itself and in the algebraic and dimensional evaluations according to the original measurement units. The results achieved allowed a further verification with the shape of the contemporary city in GIS project, estimating the accuracy of the survey of the urban perimeter carried out by Leone, of its drawing in Table III, and of its geometric and algebraic analyzes.