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What is the .VPF File Extension?


.VPF File Extension Description:

The Vector Product Format or the VPF file extension is a standard format and structure intended for direct use to large geographic databases based on a geo-relational data model. It is used for organizing and encapsulating such digital geographic databases for transmission. It enables the application software in reading data straight from the computer's readable media that is without the prior conversion towards an actual intermediate form.

The file extension VPF uses indexes and tables which permit straight access through thematic content and spatial location. It is intended to be utilized with whichever digital type of geographic data through the use of faces, nodes, and edges. The VPF file extension defines the actual format of certain data objects, as well as its geo-relational data model which provides a particular data organization in which the software can have the VPF data objects manipulated.

The file in the file extension VPF has three basic data structures namely Directories, Tables, and Indices. There are lots of hierarchical directories inside this file extension. The tables are actually either binary or ASCII files that are stored inside the directories. Each type of table has a specific structure of columns or fields for various kinds of related information along with several rows of precise records. The various VPF tables actually stores attribution, feature, location, topology and geometry information. The indices in this file extension are a special kind of table, which has pointers between other tables and records.

The file extension VPF sorts out data inside five actual hierarchical levels: Library, Database, Feature, Geometric Primitives and Coverage. The Geometric primitives that include nodes, edges, faces and text describe spatial positions and topological relationships. While the Features consisting of lines, points, text, and areas are illustrated utilizing attributed values and feature codes. Feature and Geometric Primitives data are related via the geo-relational data model. Features are grouped according to thematic relationships into classes within coverage. The Library is a collection of coverage over the same geographic extent using the same tiling scheme. These Libraries in the file extension are grouped according to distribution and application factors into databases.

Author: National Geospatial-Intelligence Agency (,NGA),
Author URL: http://www.nga.mil
Related Applications: geographic databases
Common Path: N/A

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Do you have errors with .VPF files?

What Causes .VPF files Errors?

.VPF files errors are possibly serious Windows file system errors and can be brought on because of a broken program registry that should be rectified immediately to avoid additional corruption in other applications and/or hardware. Risks include system device damage, blue screen errors and fatal operating system crashes.

What are the Symptoms of .VPF files Errors?

.VPF files errors produce numerous symptoms, including but not limited to: computer freezes on start up or shut down, applications freeze up, diminished computer performance, internal speaker beeping, trouble accessing documents, sluggish behaviour and software installation trouble.

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How to Fix .VPF File Extension Errors    |    What is the .VPF File Extension?    |    Repair .VPF File Errors