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Computerised Cadastral Mapping: A Modern Technological Improvisation
R. M. Singh
National Centre for Human Settlements and Environment, Bhopal
E-mail : rrmsingh@rediffmail.com
Introduction
Applications of cartography in rural mapping are age old and this art has taken various turns since from its existence till today. The new trends in cartographic development has endeavor this art with digital techniques. The making and use of computer based systems for the cartography is added advantage in reproduction and multidisciplinary use and analysis of thematic mapping in the rural development activities. In fact this transition to "computer cartography" started long time ago. It is worth noting, however, that the pace of change towards an electronic future is variable across the world. Digital cadastral maps are being produces as cartographic maps, which provide an overview of some of the major trends and concerns in digital cartography. The paper is attributed the contribution of applications of CAD (Computer Aided Drafting) in digital cartography in addition to Geographical Information Systems applications for thematic mapping through digital analysis. Digital cadastral maps are used as a media for generating and preparation query cell for rural planning as well.
Every activity needs proper planning, reporting and monitoring. A well-formed information base is most essential for support during these processes. The graphical form of data is most easily understood at any level of functionary and is most properly interpreted, and useful actions can be followed.
As far as storage and processing of information is concerned, computers are already quite accepted tool. Computers mainly help in storing information in the form of maps and help the user in performing complex tasks in such simplified way. Sketchy maps and illustrations used to record land ownership and revenue information in India, later gave rise to cadastral maps. Assessment of crop yield and fixing the governmental share became a major activity of revenue administration. Scale alteration and superimposition are hard exercises if one is working with printed maps (on paper), but the same are easily performed through digital maps.
Beginning in the 1970's, many mapping experts adopted a communications model for cartography, understanding maps as tools for the communication of information from cartographer to map user. With the rapid progress in computer technology afforded by the ubiquitous personal computer, in the last decade a number of cartographic researchers, led by Alan MacEachren (1995), have suggested a new way of understanding how maps work. Rather than attempting to make a best map, modern computer technology can allow for the preparation of multiple representations of a phenomenon that can be used to answer different questions.
High-resolution digital data (satellite image / aerial photographs) can be used for capturing the individual land holdings. It also aids in easy retrieval and manipulation of data, to update new land parcels to enable periodic report generation and its changing pattern.
Objectives
Objectives of this paper is to highlight the needs of the digital cadastral mapping with cadastral information at larger scales for physical planning and development of rural areas and to drive the such need to the survey and mapping community.
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