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NGS Metadata Library > NGS Lidar > 2021 NOAA NGS Topobathy Lidar: Gloucester, MA >

NOAA NGS Topobathy Lidar Class Scheme: Gloucester, MA

Entity (ENT)  |  National Geodetic Survey (NGS)
GUID: gov.noaa.nmfs.inport:72019  |  Updated: February 1, 2024  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Entity Info
Data Attributes
Catalog Details

Summary

Description

Class table describing the class numbers used in the lidar data file. Each point in the lidar file has a class associated.

Entity Information

Entity Type
Other

Data Attribute / Type Description
0- Created never classified
Point class number 		Point that was acquired but not assigned a classification
1 - Unclassified
Point class number 		Unclassified point
2- Ground
Point class number 		Ground Point
7 - Low Point (Noise)
Point class number 		Low Point (Noise)
9 - Water
Point class number 		Water Point
18 - High Noise
Point class number 		Refracted high water point
40 - Bathymetric Point
Point class number 		point classified as bathymetric ground.
41 - Water Surface
Point class number 		Point classified as water surface.
42 - Derived Water Surface
Point class number 		Derived water surface (synthetic water surface location used in computing refraction at water surface).
43 - Submerged Object
Point class number 		Submerged object, not otherwise specified (e.g., wreck, rock, submerged piling)

Controlled Theme Keywords

elevation, Elevation Theme, LIDAR

Child Items

No Child Items for this record.

Contact Information

No contact information is available for this record.

Please contact the owner organization (NGS) for inquiries on this record.

Item Identification

Title: NOAA NGS Topobathy Lidar Class Scheme: Gloucester, MA
Status: Completed

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > SPECTRAL/ENGINEERING > LIDAR
ISO 19115 Topic Category
elevation
NGDA Portfolio Themes
Elevation Theme

Instrument Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Instrument Keywords
LIDAR > Light Detection and Ranging

Platform Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Platform Keywords
Airplane > Airplane

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC
Country: USA

Entity Information

Entity Type: Other
Active Version?: Yes
Description:

Class table describing the class numbers used in the lidar data file. Each point in the lidar file has a class associated.

Data Attributes

Note: Metadata requirements do not apply to attributes for non-tabular entities.

Attribute Summary

Rubric Score Primary Key? Name Type Description
N/A
 0- Created never classified Point class number Point that was acquired but not assigned a classification
N/A
 1 - Unclassified Point class number Unclassified point
N/A
 2- Ground Point class number Ground Point
N/A
 7 - Low Point (Noise) Point class number Low Point (Noise)
N/A
 9 - Water Point class number Water Point
N/A
 18 - High Noise Point class number Refracted high water point
N/A
 40 - Bathymetric Point Point class number point classified as bathymetric ground.
N/A
 41 - Water Surface Point class number Point classified as water surface.
N/A
 42 - Derived Water Surface Point class number Derived water surface (synthetic water surface location used in computing refraction at water surface).
N/A
 43 - Submerged Object Point class number Submerged object, not otherwise specified (e.g., wreck, rock, submerged piling)

Attribute Details

0- Created never classified

CC ID: 1322565
Seq. Order: 1
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Point that was acquired but not assigned a classification

1 - Unclassified

CC ID: 1322566
Seq. Order: 2
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Unclassified point

2- Ground

CC ID: 1322568
Seq. Order: 3
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Ground Point

7 - Low Point (Noise)

CC ID: 1322579
Seq. Order: 4
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Low Point (Noise)

9 - Water

CC ID: 1322580
Seq. Order: 5
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Water Point

18 - High Noise

CC ID: 1322567
Seq. Order: 6
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Refracted high water point

40 - Bathymetric Point

CC ID: 1322573
Seq. Order: 11
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

point classified as bathymetric ground.

41 - Water Surface

CC ID: 1322575
Seq. Order: 13
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Point classified as water surface.

42 - Derived Water Surface

CC ID: 1322590
Seq. Order: 14
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Derived water surface (synthetic water surface location used in computing refraction at water surface).

43 - Submerged Object

CC ID: 1322576
Seq. Order: 15
Data Storage Type: Point class number
Required: No
Primary Key: No
Status: Active
Description:

Submerged object, not otherwise specified (e.g., wreck, rock, submerged piling)

Catalog Details

Catalog Item ID: 72019
GUID: gov.noaa.nmfs.inport:72019
Metadata Record Created By: Maryellen Sault
Metadata Record Created: 2024-02-01 15:09+0000
Metadata Record Last Modified By: Maryellen Sault
Metadata Record Last Modified: 2024-02-01 15:14+0000
Metadata Record Published: 2024-02-01
Owner Org: NGS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2024-02-01
Metadata Review Frequency: 3 Years
Metadata Next Review Date: 2027-02-01