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GIS Symbolization
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Point Symbol
Represents specific locations or discrete data points on a map.
Line Symbol
Depicts linear features such as roads, rivers, or boundaries.
Polygon Symbol
Used to represent area features such as countries, habitats, or land use.
Choropleth Map
A thematic map in which areas are shaded or patterned in proportion to the measurement of the statistical variable of interest.
Proportional Symbol Map
Features symbols such as circles or squares that change in size according to the value of an attribute.
Dot Density Map
Uses dots to represent a quantity, allowing for the visualization of a pattern or distribution over an area.
Heat Map
Uses colors to represent the density or intensity of variables, blending colors between points for a smooth gradient effect.
Isarithmic Map
Displays geographically continuous data using lines that connect points of equal value, such as elevation, pressure, or rainfall.
Flow Map
Shows the direction and volume of movement between two places. Often uses lines of varying thickness to represent the volume.
Graduated Symbol Map
Features symbols that are varied in size to represent a quantitative variable, with each size corresponding to a data range.
Unique Value Symbol
Assigns a different symbol to each category of data, useful for distinguishing between discrete classes or types.
Multivariate Symbol
Combines different symbol types or attributes to represent two or more variables simultaneously on a map.
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