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What is the importance of spatial data and attributes in map making? Explain with example. |
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Answer» Each feature on the earth’s surface has a location of its own. Such features of the earth’s surface having a specific location are known as spatial data. For example, the location of Trivandrum is in between north latitude 8°29′ and east longitude 76°55′. When the map of a place is to be included in G1S, its spatial data should also be given. The latitude and longitude of that place should be marked in the map. Along with spatial data, attributes should also be included in the map. The additional information about the characteristics of each spatial data on earth’s surface are called attributes. For example, if a well is to be marked in the map, information about the characteristics of the well such as the depth of the well, whether it has a platform and retaining wall, whether it is fresh water or not and details of ownership of the well should also be marked. These are the attributes of the well. |
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