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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 of a large number of related phenomena. Dot maps are a type of unit visualizations that rely on a visual scatter to show spatial patterns, especially variances in density.
Spot zoning is the application of zoning to a specific parcel or parcels of land within a larger zoned area when the rezoning is usually at odds with a city's master plan and current zoning restrictions. Spot zoning may be ruled invalid as an "arbitrary, capricious and unreasonable treatment" of a limited parcel of land by a local zoning ...
A spot height is an exact point on a map with an elevation recorded beside it that represents its height above a given datum. [1] In the UK this is the Ordnance Datum . Unlike a bench-mark , which is marked by a disc or plate, there is no official indication of a spot height on the ground although, in open country, spot heights may sometimes be ...
Crime mapping, since it is still new, has many technical problems and also ethical issues that should not be overlooked when utilizing these tools. The following section will examine criticisms in the area of spatial analysis and the crime mapping of hotspots in a broad sense.
Crime mapping is used by analysts in law enforcement agencies to map, visualize, and analyze crime incident patterns. It is a key component of crime analysis and the CompStat policing strategy. Mapping crime, using Geographic Information Systems (GIS), allows crime analysts to identify crime hot spots , along with other trends and patterns.
A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. [4] The contour interval of a contour map is the difference in elevation between successive contour lines. [5] The gradient of the function is always perpendicular to the contour ...
Spot zoning is a controversial practice in which a small part of a larger zoning district is rezoned in a way that is not consistent with the community's broader planning process. [63] While a jurisdiction can rezone even a single parcel of land in some cases, spot zoning is often disallowed when the change would conflict with the policies and ...
A cartogram (also called a value-area map or an anamorphic map, the latter common among German-speakers) is a thematic map of a set of features (countries, provinces, etc.), in which their geographic size is altered to be directly proportional to a selected variable, such as travel time, population, or gross national income. Geographic space ...