ASPRS LiDAR Data Exchange Format (LAS) Geometry Support
|
Format Type Identifier |
LAS |
|
Reader/Writer |
Both |
|
Licensing Level |
Professional and above |
|
Dependencies |
For reading and writing .lasd files, ArcGIS 3D Analyst Extension in ArcGIS Pro. The bit version (32-bit or 64-bit) must be the same for FME and ArcGIS. |
|
Dataset Type |
Reader: File Writer: Folder |
|
Feature Type |
LAS or <source_las_filename> |
|
Typical File Extensions |
|
|
Automated Translation Support |
Yes |
|
User-Defined Attributes |
No |
|
Coordinate System Support |
Yes |
|
Generic Color Support |
No |
|
Spatial Index |
Never |
|
Schema Required |
Not Applicable |
|
Transaction Support |
No |
|
Geometry Type Attribute |
las_type |
| Encoding Support | No |
LAS Geometry Support
|
Geometry |
Supported? |
| aggregate | no |
|
circles |
no |
| circular arc |
no |
|
donut polygon |
no |
|
elliptical arc |
no |
|
ellipses |
no |
|
line |
no |
|
none |
no |
|
point |
no |
|
point cloud |
yes |
|
polygon |
no |
|
raster |
no |
|
solid |
no |
|
surface |
no |
| text |
no |
|
z values |
yes |
LAS Point Cloud Components
| Point Cloud Component | Data Type | Notes |
|---|---|---|
| x | Int32 | |
| y | Int32 | |
| z | Int32 | |
| intensity | UInt16 | |
| returns | UInt8 | |
| number_of_returns | UInt8 | |
| scan_direction | UInt8 | |
| flight_line_edge | UInt8 | |
| classification | UInt8 | |
| angle | Int8 | |
| file_marker | UInt8 | Allows for LAS flight-line based files to be combined into single files with more than one flight-line. Only supported in version 1.0. |
| user_data | UInt8 (version 1.0) or UInt16 (version 1.1+) | |
| point_source_id | UInt16 | Only supported in version 1.1+ |
| gps_time | Real64 | Only supported in version 1.1+ |
| color_red | UInt8 | Only supported in version 1.1+ |
| color_green | UInt8 | Only supported in version 1.1+ |
| color_blue | UInt8 | Only supported in version 1.1+ |
| classification_flags | UInt8 |
Indicates special characteristics associated with each point. This is a bit flag with the following values:
Only supported in version 1.4. |
| scanner_channel | UInt8 | Indicates the channel (scanner head) of a multi-channel system. Only supported in version 1.4. |
| nir | UInt16 | The NIR (near infrared) value. Only supported in version 1.4. |