GIS Dictionary

[coordinate systems] In a spherical coordinate system, the vertical line that runs parallel to the earth’s rotation, passing through 90 […]

The value for a given surface location that represents an attribute other than position. In an elevation or terrain model,

[coordinate systems] A conversion factor used to adjust vertical and horizontal measurements into the same unit of measure. Specifically, the

[statistics] A statistical measure of the spread of values from their mean, expressed in standard deviation units, where the z-score

[coordinate systems] In raster-to-TIN conversion, the maximum allowed difference between the z-value of the input raster cell and the z-value

[coordinate systems] The value for a given surface location that represents an attribute other than position. In an elevation or

[astronomy] In astronomy, the point on the celestial sphere directly above an observer. Both the zenith and nadir lie on

[ESRI software] In Survey Analyst for field measurements, a vertical angle that is formed by the intersection of two lines

[linear referencing] In linear referencing, a line event whose from-measure is equal to its to-measure. A zero length line even

[federal government] Acronym for zone improvement plan code. A five-digit code, developed by the U.S. Postal Service, that identifies the

[federal government] An enhanced ZIP Code that consists of the five-digit ZIP Code plus four additional digits that identify a