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GIS key vocab from ESRI dictionary

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Term
Definition
show [map design] The extent used to define a focus area for either a map or database production.  
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CAD   show
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show The structure used to store a computer file or record  
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show The reference specifications of a measurement system, usually a system of coordinate positions of a surface (horizontal) or heights above/below a surface (vertical). Ex. WGS 84, NAD 83  
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show Database used to STORE, QUERY, and MANIPULATE spatial data. Stores geometry, spatial reference system, attributes, and behavioral rules for data. Can store feature classes, attribute tables, raster datasets, network datasets, topologies  
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Elevation   show
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show 3d, closed geometric shape, all planar sections are ellipses or circles. Scalene: all three axes are different lengths spheroid: two of three axes are the same length  
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Feature Class   show
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Feature Dataset   show
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Feature Layer   show
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show A list of geographic place names and their coordinates. May include other information. e.g. USGS Geographic Names Information System  
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GeoEnrichment   show
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show A reference system that uses latitude and longitude to define locations on the surface of a sphere or spheroid. Must include DATUM, PRIME MERIDIAN, and ANGULAR UNIT  
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show Dominant wavelength of a color  
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Image   show
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show x,y coordinate pair specifying location of a pixel in terms of row and column position. x gives column number starting from 0 at left edge; y gives row number starting from 0 at the top  
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show x,y, coordinate space defined by columns and rows in a raster dataset. For use in a GIS image space must be transformed to real-world coordinate system through georeferencing  
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show JavaScript Object Notation. Data interchange format. An alternative to XML  
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LAN   show
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show Binary file format for storing lidar data  
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show Angular distance north or south of equtor  
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show Angular distance east or west of a central meridian (usually Greenwich prime meridian) . All lines of longitude are great circles  
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Large Scale   show
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Lossless Compression   show
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show Data compression that has high compression ratios, but does not retain all information in the data. Used to compress raster datasets that will be used as background images.  
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Mosaic Dataset   show
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show Average height of the surface of the sea for all stages of the tide over a 19 year period  
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Mental Map   show
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show Data about data. Describes content, quality, condition, origin, etc of data.  
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NoData   show
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Pixel   show
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Qualitative Data   show
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show Date grouped by measurements of number or amount (how many?, how much?, how often?). Can be discrete or continuous  
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show A spatial data model the defines space as an array of equally sized cells arranged in rows and columns, and composed of single or multiple bands. Each cell contains an attribute value and location coordinates.  
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Small Scale   show
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show TRIANGULAR IRREGULAR NETWORK. Vector data structure that partitions geographic space into contiguous, non-overlapping triangles. Used to display surface models.  
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Tobler's First Law of Geography   show
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Vertical Coordinate System   show
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show EXTENSIBLE MARKUP LANGUAGE. A standardized markup language for designing text formats. Facilitates interchange of data between computer applications. XML is a set of rules for creating standard information formats using customized tags.  
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Z-value   show
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