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How do maps generalize information?
Map generalization is the name of the process that simplifies the representation of geographical data to produce a map at a certain scale with a defined and readable legend. Conversely, the larger the scale, the more detailed is the area mapped for the same map size.
What is simplification in cartography?
simplification. [map design] A type of cartographic generalization in which the important characteristics of features are determined and unwanted detail is eliminated to retain clarity on a map whose scale has been reduced.
What is smoothing in cartography?
Smoothing is used for things such as rivers and coastlines where each curve cannot be depicted because of scale or because the detail would clutter the map. In these cases, the mapmaker will smooth out the meanders to represent the feature in its location but without every detail.
Why is it important to generalize the real features to be represented in a map?
Generalization is an important and unavoidable part of making maps because geographic features cannot be represented on a map without undergoing transformation. Maps abstract and portray features using vector (i.e. points, lines and polygons) and raster (i.e pixels) spatial primitives which are usually labeled.
What is the important features of simplification?
Simplification is a very important graphic design method used by designers to make graphics more memorable and immediately recognizable, and is utilized in logos, symbols, posters, computer icons, and other design applications.
What symbols are used in a map?
Map symbols may include point markers, lines, regions, continuous fields, or text; these can be designed visually in their shape, size, color, pattern, and other graphic variables to represent a variety of information about each phenomenon being represented.
Why is cartographic generalization important in GIS applications?
Cartographic generalization. After generalizing map data, the importance of what is remaining on the map must outweigh the insignificance of items that were generalized. Generalization is important in GIS applications other than cartography because increased data detail requires more storage space, data entry time, and processing time.
How is map generalization used in the real world?
Map generalization can take many forms and is designed to reduce the complexities of the real world by strategically reducing ancillary and unnecessary details. One way that geospatial data can be reduced is through the selection process. The cartographer can select and retain certain elements that he/she deems the most necessary or appropriate.
How is the organization of features in a cartographic map changed?
During the reclassification process, the organization of features is changed based on attributes in order to improve legibility within the map. This can be accomplished in one of three ways: Reclassifying more specifically deals with taking input cell values and replacing them with new output cell values.
How are cartographers used in computerized cartography?
Cartographers have developed many techniques or operations for removing, subduing, or enhancing visual detail in maps. Many of these have been performed intuitively by cartographers over the entire history of the craft, but they have been studied and developed further since the advent of computerized cartography.