Synonyms
Spatial online analytical processing; Spatial multidimensional analysis; Spatial data warehouses; Data cube; OLAP operations
Definition
OLAP is an abbreviation of On-Line Analytical Processing, that refers to a set of online (i. e., fast and interactive) operations, such as drilling, rolling, dicing, slicing, and pivoting, exploring a set of predefined aggregates (e. g., sum, average, count, and variance) of some measures (e. g., temperature, area, and population) in a multidimensional data warehouse [2]. Spatial OLAP refers to such OLAP operations in a spatial data warehouse, such as drilling into the detailed spatial locations (e. g., finding detailed fact summaries in a city district), or slicing of a data cube with a set of constraints (e. g., finding average midnight temperature distribution in May in the city of Chicago). It is desirable to support spatial OLAP operations in spatial data warehouses since a user can interactively explore a multidimensional spatial...
Recommended Reading
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© 2008 Springer-Verlag
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Han, J. (2008). OLAP, Spatial. In: Shekhar, S., Xiong, H. (eds) Encyclopedia of GIS. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35973-1_910
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DOI: https://doi.org/10.1007/978-0-387-35973-1_910
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