Exploring the significance of rotation angle in SVF estimate using a vector-based method Binit Kumar, Basudatta Sarkar Proceedings of the Institution of Civil Engineers Municipal Engineer, 2025 In a vector-based method for sky-view factor (SVF) calculation, selecting an appropriate rotation angle and search radius is important for accurately estimating the SVF. Researchers have used varying values for rotation angles, ranging from 1° to 22.5°. However, no rotation angle standardisation was performed. In this study, the relationship between the SVF and rotation angle was explored in an idealised symmetrical finite canyon. The SVF function in the Shadow library of R was used, with angles varying from 0.001° to 60°. The results showed that the rotation angle was not a statistically significant parameter in the SVF estimation. However, with a constant canyon length and height, the SVF increased with increasing canyon width, although with several breakpoints. Increasing the canyon length with a constant canyon height and width also resulted in breakpoints with decreasing step-widths. By varying the rotation angle, a linear pattern with breakpoints was observed at the angles obtained by dividing 360° by n, where n is an integer. The study concluded that a rotation angle that is a factor of 90° accurately estimated the SVF. Moreover, for asymmetrical canyons, rather than only lowering the rotation angles, SVF should be calculated at multiple points.
Perceived barriers faced by persons with disability in urban public buildings in India SS Singh, B Kumar Proceedings of the Institution of Civil Engineers-Municipal Engineer, 1-21 , 2026 2026.0
Impact of Building Dimensions and Setbacks around Buildings on the Sky-View Factor of a Regulated Residential Urban Canyon in India B Kumar, B Sarkar Journal of Urban Planning and Development 151 (3), 04025026 , 2025 2025.0 Citations: 1
Exploring the significance of rotation angle in SVF estimate using a vector-based method B Kumar, B Sarkar Proceedings of the Institution of Civil Engineers-Municipal Engineer 178 (2 … , 2025 2025.0
Impact of canyon's height, width and length on the sky-view factor in a symmetrical urban canyon: B. Kumar and B. Sarkar B Kumar, B Sarkar Theoretical and Applied Climatology 156 (5), 283 , 2025 2025.0 Citations: 2
Determining the appropriate rotation angle in a vector-based method of sky-view factor calculation B Kumar, B Sarkar Measurement 244, 116384 , 2025 2025.0 Citations: 2
Design and Development of Attitude Control Systems For Reusable Launch Vehicle LS Prakash, GC Arun, B Sarkar, BS Kumar, L Sampath, V Krishnanandan Journal of Aerospace Sciences and Technologies, 522-536 , 2017 2017.0
Impact of Selection of the Rotation Angle on the Calculation of Svf Using Vector Method B Kumar, B Sarkar Available at SSRN 4363476 , 0 Citations: 1
MOST CITED SCHOLAR PUBLICATIONS
Impact of canyon's height, width and length on the sky-view factor in a symmetrical urban canyon: B. Kumar and B. Sarkar B Kumar, B Sarkar Theoretical and Applied Climatology 156 (5), 283 , 2025 2025.0 Citations: 2
Determining the appropriate rotation angle in a vector-based method of sky-view factor calculation B Kumar, B Sarkar Measurement 244, 116384 , 2025 2025.0 Citations: 2
Impact of Building Dimensions and Setbacks around Buildings on the Sky-View Factor of a Regulated Residential Urban Canyon in India B Kumar, B Sarkar Journal of Urban Planning and Development 151 (3), 04025026 , 2025 2025.0 Citations: 1
Impact of Selection of the Rotation Angle on the Calculation of Svf Using Vector Method B Kumar, B Sarkar Available at SSRN 4363476 , 0 Citations: 1
Perceived barriers faced by persons with disability in urban public buildings in India SS Singh, B Kumar Proceedings of the Institution of Civil Engineers-Municipal Engineer, 1-21 , 2026 2026.0
Exploring the significance of rotation angle in SVF estimate using a vector-based method B Kumar, B Sarkar Proceedings of the Institution of Civil Engineers-Municipal Engineer 178 (2 … , 2025 2025.0
Design and Development of Attitude Control Systems For Reusable Launch Vehicle LS Prakash, GC Arun, B Sarkar, BS Kumar, L Sampath, V Krishnanandan Journal of Aerospace Sciences and Technologies, 522-536 , 2017 2017.0
