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Category Archives: Remote Sensing 101
ERRORS IN GIS
No map is perfect. Even the most accurate maps created by a GIS have some deficiencies. These deficiencies occur due to “Errors” that may have taken place at different stages of GIS implementation. These errors reduce the accuracy of the … Continue reading
Posted in GIS, Remote Sensing 101
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GIS:Spatial Data
SPATIAL DATA TYPES In a GIS, the Locational information is provided in maps by using Points, Lines and Polygons. These geometric descriptions are the basic data elements of a map. 1. Points: They are represented as a single ‘Dot ‘on … Continue reading
PROJECTIONS
A spherical co-ordinate system (like latitude and longitude) works well only if one is using a globe but not if one has to display the data on a flat surface like a map. Thus arises the need for projections. Projection is … Continue reading
Posted in GIS, Remote Sensing 101
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GIS and Cartography
Maps have been an integral part of the human story for a long time. From cave/wall paintings, ancient maps of Babylon and Greek philosophers, through the Age of Exploration, and on into the 21st century, people have created and used … Continue reading
Posted in GIS, Remote Sensing 101
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Rashid's Blog: A Place for Inquisitive Souls 