LAS LiDAR Binary File Description

The ASPRS LiDAR LAS binary file format stores 3D point data. LiDAR stands for Light Detection and Ranging data. This data is generally created by software which combines GPS, IMU, and laser pulse range data to produce X, Y, and Z point data. To use binary LiDAR data, click File | Open and select the LAS or click File | Import.

 

File Format

The format contains binary data consisting of a header block, variable length records, and point data. All data is in little-endian format. The header block consists of a public block followed by variable length records. The public block contains generic data such as point numbers and coordinate bounds. The variable length records contain variable types of data including projection information, metadata, and user application data.

 

Currently, Voxler imports 1.0, 1.1, 1.2, and 1.3 format LAS files. These can contain up to 32 codes.

 

Classification Number

Meaning

0

Created, never classified

1

Unclassified

2

Ground

3

Low Vegetation

4

Medium Vegetation

5

High Vegetation

6

Building

7

Low Point (noise)

8

Model Key-point

9

Water

10

Rail

11

Road Surface

12

Reserved

13

Wire - Guard (Shield)

14

Wire - Conductor (Phase)

15

Transmission Tower

16

Wire - Structure Connector (e.g. Insulator)

17

Bridge Deck

18

High Noise

19-32

Reserved

 

 

Import Options Dialog

See LiDAR Import Filtering Dialog

 

Import Automation Options

See LiDAR Import Automation Options

 

Export Options Dialog

Voxler does not currently export LiDAR LAS data

 

Export Automation Options

Voxler does not currently export LiDAR LAS data

 

 

See Also

File Format Chart

Import - Worksheet

LiDAR Import Filtering Dialog