A proportional symbol map of the 2016 U.S. presidential election, in which the circles are proportional to the total number of votes cast in each state, formatted as a pie chart showing the relative proportion for each candidate.
A proportional symbol map or proportional point symbol map is a type of thematic map that uses map symbols that vary in size to represent a quantitative variable.[1]: 131 For example, circles may be used to show the location of cities within the map, with the size of each circle sized proportionally to the population of the city. Typically, the size of each symbol is calculated so that its area is mathematically proportional to the variable, but more indirect methods (e.g., categorizing symbols as "small," "medium," and "large") are also used.
While all dimensions of geometric primitives (i.e., points, lines, and regions) on a map can be resized according to a variable, this term is generally only applied to point symbols, and different design techniques are used for other dimensionalities. A cartogram is a map that distorts region size proportionally, while a flow map represents lines, often using the width of the symbol (a form of size) to represent a quantitative variable. That said, there are gray areas between these three types of proportional map: a Dorling cartogram essentially replaces the polygons of area features with a proportional point symbol (usually a circle), while a linear cartogram is a kind of flow map that distorts the length of linear features proportional to a variable (often travel time).
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A proportionalsymbolmap or proportional point symbolmap is a type of thematic map that uses mapsymbols that vary in size to represent a quantitative...
A mapsymbol or cartographic symbol is a graphical device used to visually represent a real-world feature on a map, working in the same fashion as other...
Included were early chorochromatic and flow maps, and possibly the first proportional point symbol and dasymetric maps. Another example of early thematic mapping...
(altering region area), and proportional point symbols. The earliest known map to visually represent the volume of flow were two maps by engineer Henry Drury...
is represented using a standard thematic map technique, such as choropleth, cartogram, or proportionalsymbols. They may be the same type or different...
this, it is a strategy that is similar to proportionalsymbolmaps, which scale point features, and many flow maps, which scale the weight of linear features...
some of the sources of misinterpretation. A Proportionalsymbolmap visualizes statistical data of point symbols, often circles, using the visual variable...
The infinity symbol (∞) is a mathematical symbol representing the concept of infinity. This symbol is also called a lemniscate, after the lemniscate curves...
quantities is represented by closely packed circles whose areas are proportional to the quantities. Unlike a traditional bubble chart, such displays don't...
A dot distribution map (or a dot density map or simply a dot map) is a type of thematic map that uses a point symbol to visualize the geographic distribution...
A typeface (or font family) is a design of letters, numbers and other symbols, to be used in printing or for electronic display. Most typefaces include...
MacEachren, Alan M., How Maps Work: Representation, Visualization, and Design, Guilford, 1995 "Graduated and ProportionalSymbolMaps". GEOG 486: Cartography...
a type of thematic map that portray regions of categorical or nominal data using variations in color symbols. Chorochromatic maps are typically used to...
fixed-width or a proportional font is used. When viewed in Firefox 3.6, the symbols rendered in the order U+22A5, U+22A4, U+27C2 in a proportional font: "⊥ ⊤...
w_{2},\dots ,w_{n})} , which is the tuple of the (positive) symbol weights (usually proportional to probabilities), i.e. w i = weight ( a i ) , i ∈ { 1...
A monospaced font, also called a fixed-pitch, fixed-width, or non-proportional font, is a font whose letters and characters each occupy the same amount...
A dasymetric map (from Greek δασύς dasýs 'dense' and μέτρο métro 'measure') is a type of thematic map that uses areal symbols to visualize a geographic...
is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa), which...
spaces are much thinner than a normal space (except in a monospaced (non-proportional) font), with the hair space in particular being the thinnest of horizontal...
diagrams and Karnaugh map deriving and verifying the deduction "No Xs are Zs". In the illustration and table the following logical symbols are used: 1 can be...
Rutherford paper suggested that the central charge of an atom might be "proportional" to its atomic mass in hydrogen mass units u (roughly 1/2 of it, in Rutherford's...
generalization, or map generalization, includes all changes in a map that are made when one derives a smaller-scale map from a larger-scale map or map data. It...
the backspace code mapped to the function of moving the cursor backwards and deleting the preceding character would display the symbols ^H (caret, H) when...
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