AVF (Advanced Vector Format)

GISBox is a one-stop 3D GIS data editing, conversion and publishing platform that supports editing in multiple GIS formats such as OSGB/GEOTIFF/RVT, converting to 3DTiles/Terrain and publishing.

Introduction

AVF is the abbreviation of Advanced Vector Format. It is a file format used to store and transmit vector data and is widely used in GIS software and systems. AVF format stores vector data in binary form, including geographic features such as points, lines, and surfaces and their attribute information.

File Structure

The data structure of an AVF file usually includes a file header, metadata, video frame data, audio data, and an index. The file header contains the file’s meta information and format identifier, the metadata contains information related to the video content, the video frame data and audio data store the actual data of the video and audio respectively, and the index is used to quickly locate the data location. This structure enables AVF files to efficiently store and retrieve video and audio data.

Pros

1. Clear data structure: AVF files use a clear data structure, which helps efficient data processing and analysis.

2. High storage efficiency: AVF format has high efficiency in storing vector data and can save storage space.

3. Fast data access speed: Due to its efficient data structure and storage method, AVF files show a fast speed in data access and can meet the needs of large-scale vector data processing and analysis.

4. Extensive software support: AVF files can be imported, exported and edited through various GIS software, which greatly facilitates the exchange and sharing of geographic data.

Cons

1. Specific software dependency: The use of AVF format requires specific software support. If the software does not support the format, format conversion may be required, which increases the complexity of processing.

2. Compatibility issues: There may be compatibility issues between different software, so you need to pay attention to the applicability and compatibility of the format when exchanging and sharing data. This may result in AVF files not being able to be used seamlessly in all supported GIS software in some cases.

Application Scenario

The AVF format has wide applicability in various GIS application scenarios and can realize the storage, exchange, analysis and sharing of vector data.

Example

AVF of the integer register file after protecting the lower 32-bits of each register with a single-error-correcting scheme (right) and the AVF without any protection (left).