LAS File Documentation
Overview
Feature | Value |
---|---|
Format Name | LIDAR Data Exchange File |
Extension | .las |
MIME Type | application/octet-stream |
Developed by | ASPRS (American Society for Photogrammetry and Remote Sensing) |
Initial Release | 2003 |
Latest version | 1.4 |
Description | Standard format for storing LIDAR point cloud data |
Used for | Storing and exchanging 3D point cloud data from LIDAR surveys |
Data Types | Point data, including X, Y, Z coordinates and intensity |
Point Classes | Includes ground, low vegetation, medium vegetation, high vegetation, building, low point(noise), water, railway, road surface, etc. |
File Signature | LASF |
Compression | None in standard LAS; LAZ for compressed |
Coordinate System | Georeferenced; supports global coordinate systems |
Metadata | Includes information like version, system identifier, generating software, creation date, etc. |
Advantages | Widely supported, interoperable, and contains precise point cloud data |
Disadvantages | File size can be very large; lacks built-in compression |
Applications | Geospatial analysis, forestry, mining, urban planning, archaeology, and more |
Binary/Text | Binary |
Scalability | Can handle large volumes of data efficiently |
Interoperability | High; supported by various software and platforms |
Customizable | Limited; but extendable via the use of VLRs (Variable Length Records) |
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