1. LAS File Extension
2. What is a(n) LAS file?
3. How to open LAS file?

3.1 Download and install application that supports LAS files
1. 3.1.1 Programs that support LAS files
3.2 Verify whether LAS files are associated with appropriate software
3.3 Check LAS file for other errors

4. Similar file extensions

LAS File Extension

File type LIDAR Data Exchange Format
File developer ASPRS
File category Data Files
File popularity rating

What is a(n) LAS file?

The LAS (LIDAR Data Exchange Format) file format is a binary file format that stores 3-dimensional coordinate data of LiDAR data points. It is designed for the interchange of lidar point cloud data between and sensors, software applications, and geospatial data systems. The format supports multiple versions, allowing for evolution and growth of the specification as new capabilities are developed.

A LAS file contains the points in a single tile format pertinent to a defined geographic area. Each LAS file can store multiple types of geospatial information, such as surface elevation, color value, intensity and classification codes. The coordinates in these files are expressed using a specified reference system, making it easier to exchange geospatial data.

How to open LAS file?

If given user account does not have necessary permissions to open files with LAS extension, it is highly probable that no program that supports given files is installed on the users’ system. Below is a list of actions user should pursue in order to resolve most common problems.

Step 1. Download and install application that supports LAS files

After the application has been installed, the system should automatically open LAS files with given application. Below is the list of relevant programs along with operating systems they are available for:

Programs that support LAS files

Windows

Step 2. Verify whether LAS files are associated with appropriate software

It is possible that an application that supports LAS files is not associated with such files. In such case, the program should by manually associated with LAS files (right-click on the file icon → Properties → General Tab → In submenu "Open with" and click on "Change" button. System will display a list of suggested programs that support LAS files. Choose the application by checking the box "Always use the selected application to open this kind of files". System will store this information in its registry and use it to open LAS files with the selected program.

Changing LAS file association in registry

File association for LAS files can be edited manually by editing appropriate entry in Windows System Registry. However, it is discouraged as it may introduce errors to registry if not done properly and may even damage the system.

Step 3. Check LAS file for other errors

LAS file was not copied properly from storage medium.
Antivirus application prevents opening LAS files. In that case it is recommended to exercise extreme caution and recover or delete infected LAS file. It is also advised to scan the entire system for malicious software and viruses with antivirus software.
For LAS files downloaded from the internet it is advised to check if the file has been downloaded completely and is not corrupted. If not, the file should be re-downloaded.

Similar file extensions

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