GIS Dictionary

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visual center

[map design] The point on a rectangular map or image to which the eye is drawn. The visual center lies […]

visual hierarchy

[map design] The presentation of features on a map in a way that implies relative importance, usually achieved with visual

visualization

[visualization] The representation of data in a viewable medium or format. In GIS, visualization is used to organize spatial data

VMap

[standards] Acronym for Vector Map. A vector-based data product in vector product format (VPF) at several scales divided into groups,

volume

1 [data analysis] In a TIN, the space (measured in cubic units) between a TIN surface and a plane at

Voronoi diagram

[Euclidean geometry] A partition of space into areas, or cells, that surround a set of geometric objects (usually points). These

voxel

[graphics computing] A three-dimensional pixel used to display and rotate three-dimensional images.

VPF

[data structures] Acronym for Vector Product Format. A vendor-neutral data format used to structure, store, and access geographic data according

VPF dataset

Acronym for Vector Product Format. A vendor-neutral data format used to structure, store, and access geographic data according to a

VPF layer

[ESRI software] A layer that references a set of VPF data. VPF data is a standard format, structure, and organization

vTable binding

[programming] The fastest form of early binding, during which client code that uses a COM object (such as Visual Basic)

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