GIS Dictionary

[mathematics] The smallest convex polygon that encloses a group of objects, such as points. In ArcGIS, TIN boundaries are convex […]

[mathematics] A polygon in which a straight line drawn between any two points inside the polygon is completely contained within

[ESRI software] In Survey Analyst, a process of computing a sequence of survey point locations starting from an initial known

A reference framework consisting of a set of points, lines, and/or surfaces, and a set of rules, used to define

The process of converting the coordinates in a map or image from one coordinate system to another, typically through rotation

[astronomy] The official timekeeping system of the world’s nations since 1972. It refers local time throughout the world to time

[coordinate systems] A set of values represented by the letters x, y, and optionally z or m (measure), that define

[statistics] An association between data or variables that change or occur together. For example, a positive correlation exists between housing

[data models] A buffer drawn around a line.

[spatial analysis] A form of spatial analysis usually applied to environmental and land-use data in order to find the best

1 [data analysis] A function of time, distance, or any other factor that incurs difficulty or an outlay of resources.