GIS Dictionary

Oracle

A database company that produces a relational database management system (also called Oracle), which allows data and other objects ...

order

In ArcGIS Network Analyst, a network location used to determine routes in vehicle routing problem (VRP) analysis. Users ...

order pair

In ArcGIS Network Analyst, an object used in vehicle routing problem (VRP) analysis. An order pair defines a ...

ordinate

In a rectangular coordinate system, the distance of the y-coordinate along a vertical axis from the horizontal or ...

origin

1 A fixed reference point in a coordinate system from which all other points are calculated, usually represented ...

orthophoto

An aerial photograph from which distortions owing to camera tilt and ground relief have been removed. An orthophoto ...

orthophotoquad

An orthophotograph that has been formatted as a USGS 1:24,000 topographic quadrangle with little or no cartographic enhancement.

orthophotoscope

A photomechanical or optical-electronic device that creates an orthophotograph by removing geometric and relief distortion from an aerial ...