Carlo Ratti - MIT SENSEable City Lab

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Weitkamp G, Bregt A, van Lammeren R, van den Berg A, 2007, “Three Sampling Methods for Visibility Measures of Landscape Perception”, Spatial Information Theory: 8th International Conference, COSIT 2007 Melbourne, Australia, September 19-23, 2007, Proceedings Eds S Winter, M Duckham, L Kulik, B Kuipers (Springer, Berlin Heidelberg New York) pp 268 – 284 14
Table 1. Calculation of isovist properties from two different vantage points in the open spaces of the Milan Trade Fair masterplan. Property of the 2-D isovist Isovist with viewpoint=[630,530] Isovist with viewpoint=[730,700] Fundamental properties Area of isovist A [m 2 ] 119.104 178.644 Perimeter of isovist P [m] 6.824,00 7.224,50 Solid Perimeter Ps [m] 2.506,10 2.840,50 % Solid Perimeter Ps / Perimeter [-] 36,7250 39,3171 Occluding Perimeter Po [m] 4.317,90 4.384,00 Maximal radial distance d max [m] 524,3892 604,7942 Minimal radial distance d min [m] 72,0278 99,2975 Average radial distance d ave [m] 260,8405 287,6694 Elongation properties Compactness !i [-] 0,4974 0,4756 Convexity – Cluster index "i [-] 0,1793 0,2074 Concavity P 2 /(4*A*#) [-] 31,1132 23,2497 Ratio of eigen values $ 1/$ 2 [-] 2,5454 2,1746 Radial variances Entropy H [-] 7,6276 7,5785 Radial standard deviation stdev [-] 112,1557 112,2225 Radial variance M2 [-] 40.541.818,0381 40.073.812,7485 Radial skew M3 [-] 1.815.692.803,6319 3.042.853.616,2578 Skewness [-] 0,3997 0,6772 15
Page 1 and 2: Carlo Ratti Eugenio Morello A Digit
Page 3 and 4: 1. Introduction In this study we ex
Page 5 and 6: evaluating parameters. In other wor
Page 7 and 8: grouped in three macro-categories:
Page 9 and 10: 3c. Iso-visi-matrix This process ca
Page 11 and 12: special iso-lines on open spaces re
Page 13 and 14: We can verify the homogeneity of th
Page 15: Fisher-Gewirtzman D, 1998 A Method
Page 19 and 20: Table 2. Mean values obtained for t
Page 21 and 22: Figure 5. Slice through an Iso-visi
Page 23 and 24: edges ! “Linear elements not cons
Page 25: Figure 7. Top views of 3-D isovists

Carlo Ratti - MIT SENSEable City Lab

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