COPC (Cloud Optimized Point Cloud) Quick Facts

Format Type Identifier	COPC
Reader/Writer	Both
Dependencies	The COPC reader and writer inherit all LAS functionality – see the ASPRS LiDAR Data Exchange Format (LAS) Reader/Writer for more details.
Dataset Type	File or URL
Feature Type	LAS or <source_las_filename>
Typical File Extensions	.laz .copc.laz COPC will also read other LAS-specific file extensions: .las .zlas .lasd
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

COPC (Cloud Optimized Point Cloud) Geometry Support

Geometry	Supported?
Aggregate	No
Arc	No
Box	No
BRep Solid	No
Clothoid	No
Composite Solid	No
Composite Surface	No
Coordinate Precision	No
CSG Solid	No
Donut	No
Ellipse	No
Extrusion	No
Face	No
Geometry Definitions and Instances	No
Hierarchical Geometries	No
Homogeneous Aggregates	No
Line	No
Measures	No
Mesh	No
MultiArea	No
MultiCurve	No
Multiple Geometries	No
MultiPoint	No
MultiSolid	No
MultiSurface	No
MultiText	No
Null	No
Oriented Arc	No
Pipe	No
Path	No
Point Cloud	Yes
Point	No
Polygon	No
Raster	No
Rectangle Face	No
Surface Normals	No
Surface Sidedness	No
Text	No
Textures	No
Traits	No
Triangle Fan	No
Triangle Strip	No
Voxel Grid	No
Z values	Yes

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	UInt16	Only supported in version 1.1+
color_green	UInt16	Only supported in version 1.1+
color_blue	UInt16	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: 0 - synthetic (created by a technique other than LIDAR collection) 1 - key-point (should not be removed by thinning) 2 - withheld (should not be included in processing) 3 - overlap (this point is in the overlap region of two or more swaths) 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.