APPLICATION OF GIS METHOD TO IDENTIFY URBAN SILHOUETTE
APPLICATION OF GIS METHOD TO IDENTIFY URBAN SILHOUETTE FORM By: Rahman Tafahomi Seyed Moslem Seyed Al Hosseini Hassanuddin Lamit Ahman Bushri
Introduction: • • • Each city has particular form that make it special There are numerous urban forms patterns of cities are equal to city numbers Perception of laypeople is so general in city Perception of laypeople is regarding to location Comprehensive perception of city concern with experts then laypeople
Issue: • GIS system is a tool to: • Integrate geometric data and non geometric information • connect and like between graphical data and non graphical (vector and raster) • Convert information into data and vase versa • arrange, configure, classify, illustrate data • Present height of buildings regarding to data • Able to create visual form to analysis
Issue continue… • From of city combine from natural terrains and man made elements • Topography is important factors in natural part • Roads and buildings are significance parts of man made • Overlays technique adjust these two groups of data and information
Methodology • Integrated method including: GIS and Urban Design methods • Application of: Arc. Map, Spatial analyst, 3 D analyst, and Arc. Scene extension •
Research process GIS surrounding Concepts of silhouette Elements of silhouette Natural terrains Man made data
Concept of Silhouette Form • The silhouettes are easily recognized. But there is no color, shading, motion, or texture. Nor is context of any help; your present location, the time of day, and other contextual factors could not help you to predict context are often not necessary for successful recognition. Shape alone is often sufficient. • what is in the figure. The figure contains only shape, and that of a restricted type, • namely silhouettes. • Thus, in many cases, shape alone permits successful recognition of objects.
• Boundary is important factor in silhouette of shape or elements that it could create line to separate mass from spaces.
Concepts of Urban Silhouette
Silhouette of Hong Kong city
Mass parts of cities as Different Urban Silhouette
Research Design
Sorts of Data for Urban Silhouette Natural Man made Topography data Buildings shape data Terrain data Buildings heights data
Designing Structure of Data in GIS Context Data Details Auto. CAD Data Satellite data DATA Geometric data base GIS System INFORMATION non geometric Survey operation
Auto Cad Maps as a platform
Data and information to create data base bank
Linkage between data and information
Linkage between data and information
Creation of landform as illustration base
Simulation of 3 D forms of Buildings
Simulation of 3 D forms of Buildings
Simulation of 3 D forms of Buildings
Data Analysis and Findings of Research
Topography heights in Mashhad city Area
Periodical expansions of Mashhad city
Topography of Mashhad city
Heights of buildings in Mashhad city
First ring of urban silhouette form in Mashhad city
Second ring of urban silhouette form in Mashhad city
Third ring of urban silhouette form in Mashhad city 1 ﻣﺤﻞ ﻫﺘﻞ ﻫﻤﺎ ﺷﻤﺎﺭﻩ
Conclusion: • Arc GIS and Arc Scene have ability to illustrate and redesign the buildings heights to create urban silhouette forms • Arc GIS and Arc Scene have ability to redesign urban silhouette forms regarding data and information of the graphical codes on the maps and no graphical information • GIS platform have good ability to create natural landforms of city and placement the bulk of city • GIS technology makes it to technical presentation that different group of experts and professional could do it. • According to specification of silhouette concept, simulation of a rough draft of the city bulk and mass as silhouette provide cyber situation for planners, designers, managers, and laypeople to consider their situation in city for different objectives and purposes.
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