A. H. Thiessen proposed thiessen polygon method to show the area of influence of corresponding weather stations in a given area. However, various fields of sciences and social sciences use this technique of regionalisation for research purposes. It is based on division of a given area into polygons of different sizes and shapes. In fact, … Read more
Topographical Sheets Topographical sheets or topo sheets are large scale maps of land area of the world. Large scale means that smaller area is shown in detail on a piece of paper. Here, the representative fraction is small e.g. 1:25000. Small scale means that large area is shown on a piece of paper but it … Read more
Survey of India’s Topographical Sheets East India Company established Survey of India in 1767 for mapping, survey and exploration of resources in India. It publishes the topographical sheets in two series i.e. open series maps and defense series maps. Open Series Maps Survey of India prepares these sheets on 1:250000, 1:50000 and 1:25000 scale as … Read more
Topographical Sheet Example Topographical sheets are large scale maps and offers the spatial information in detail. These sheets are used for micro level planning and execution of civil and defense projects. Below is an example of topographical sheet. For Types and Uses of Topographical Sheets, Click Here. To Download More Topographical Sheet, Click Here. Kulwinder … Read more