GIS Dictionary

[surveying] Locating positions on the earth’s surface using the principle that if the measures of one side and the two […]

[ESRI software] A piece of code in a database management system (DBMS) that executes in response to data being modified

[ESRI software] An operator within the Raster Calculator of ArcGIS Spatial Analyst that performs various trigonometric calculations on the values

[surveying] Determining the position of a point on the earth’s surface with respect to two other points by measuring the

[navigation] A bearing measured relative to true north.

[geography] The direction from any point on the earth’s surface to the geographic north pole.

An individual row or record in a database table. Each tuple records the values for the columns defined in the

[network analysis] In network analysis, a movement that explicitly models transitions between edge elements during navigation.

[network analysis] A specialized feature class that defines turn movements in an ArcGIS network dataset. Turn features explicitly model subsets

[network analysis] In network analysis, the cost of making a turn at a network node. The impedance for making a

In ArcInfo Workstation and ArcView GIS 3, a table that stores information about the cost of making each turn movement