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Sunday, November 15, 2009

Map Use and Generalizations

As we already know that the maps reflect the various types of information of the earth element and that there kaitanya with earth. Thus, the map is a good source of information because it can immediately visually map provides information on the spatial distribution pattern of the elements described.
To be able to use the map properly, there is phasing in its use. There are 3 stages in the use of maps, namely:
1. Read a map (map reading), which is more on identifying symbol and read the meaning of the symbol.
2. Analysis of the map (map analysis), at this stage been able to find out what is depicted on the map, which was followed by measuring or finding the value of these elements.
3. Interpretation of the map (map interpretation), that is more on finding answers to why a particular section has occurred in different patterns with patterns in other parts of the same map.
Dissimilarity information presented on the various maps that have different scales of generalization arises because of the aspect. Generalization itself can mean the selection and simplification of the elements on the map. Generalization occurs because increasing the density of the contents of the map by the reduction of scale and the limited ability of the eye in seeing the minimum size on the map. Generalization is closely related to map scale and map-making purposes. Generalization basically divided into 2, namely:
a. Generalization, geometric, rather the simplification of forms.
b. Conceptual generalization, rather the simplification of the mapped subject (done by people who understand the concept of the elements depicted).
Generalization aspect consists of the following:
1. Election
2. Simplification
3. Removal
4. Enlargement
5. Shift places
6. Stress
7. Combination
8. Classification
While generalizations can be done in a way:
a. Jump on a map that has diminished
b. Performed on the original map before the diminished
c. Done through intermediaries scale
Position / location of a place can be identified by determining the relative and absolute determination. Determination of relativism can be done by determining the direction and the direction, the direction and distance, and distance and distance. Absolute determination of a point on the map can be searched using the formula:
The position of the point (x, y)
Latitude (x) = latitude early +

Longitude (y) = initial + longitude

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