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Manawatu - Whanganui LiDAR 1m DSM (2015-2016)

This layer contains the DSM for LiDAR data from the Manawatu - Whanganui Region captured between 2015 and 2016.


- The DEM is available as layer [Manawatu - Whanganui LiDAR 1m DEM (2015-2016)]( https://data.linz.govt.nz/layer/102475-manawatu-whanganui-lidar-1m-dem-2015/ ).


- The index tiles are available as layer [Manawatu - Whanganui LiDAR Index Tiles (2015-2016)]( https://data.linz.govt.nz/layer/102477-manawatu-whanganui-lidar-1m-index-tiles-2015/ ).


- The LAS point cloud and vendor project reports are available from [OpenTopography]( https://portal.opentopography.org/datasets?loc=New%20Zealand ).


This is a reprocessed dataset of the Manawatu-Whanganui 2015 LiDAR Project. It was re-supplied by Aerial Surveys for Toitū Te Whenua Land Information New Zealand, and includes peripheral data not part of the original survey obtained by Horizons (Manawatu-Wanganui) Regional Council. The survey area includes Bulls, Ohura, parts of Fielding and Marton. These datasets were generated by Aerial Surveys and their subcontractors. Data management and distribution is by Toitū Te Whenua Land Information New Zealand.


Data comprises:


- DEM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout


- DSM: tif or asc tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout


- Point cloud: las tiles in NZTM2000 projection, tiled into a 1:1,000 tile layout


Pulse density specification is at a minimum of 2 pulses/square metre.


Vertical datum is NZVD2016.

Simple

Identification info

Date (Creation)
2015-12-27
Status
Completed
Point of contact
Role Organisation Electronic mail address
Point of contact

Toitū Te Whenua Land Information New Zealand

customersupport@linz.govt.nz

Spatial representation type
Grid

Spatial resolution

Equivalent scale

Denominator
1000
Topic category
  • Elevation

Extent

Geographic identifier
nzl

Title

ANZMet Lite Country codelist

Date (Publication)
2009-03-31
Edition

Version 1.0

Edition date
2009-03-31
Citation identifier
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-country.xml#Country

Cited responsible party
Role Organisation Electronic mail address
Custodian

ANZLIC the Spatial Information Council

Extent

N
S
E
W


Maintenance and update frequency
Not planned

Resource format

Title

*.xml

Date
Edition

Unknown

ANZLIC Jurisdictions
  • New Zealand

Resource constraints

Classification
Unclassified

Resource constraints

Use limitation

Copyright in this work is owned by Horizons Regional Council

© Horizons Regional Council

Use constraints
Copyright

Resource constraints

Use limitation

Released by LINZ under Creative Commons Attribution 4.0 New Zealand (CC BY 4.0) with:


Following Attribution:

"Sourced from the LINZ Data Service and licensed by Horizons Regional Council, for re-use under CC BY 4.0."

For details see: https://www.linz.govt.nz/data/licensing-and-using-data/attributing-elevation-or-aerial-imagery-data

Use constraints
License
Language
English
Character encoding
UTF8

Distribution Information

OnLine resource

https://data.linz.govt.nz/layer/102476-manawatu-whanganui-lidar-1m-dsm-2015-2016/

Resource lineage

Statement

Data Acquisition:

Airborne Laser Scanner (ALS) data was acquired from a fixed wing aircraft on between 27 December 2015 and 17 December 2016, using Aerial Surveys OptechOrion H300 LiDAR system.


Survey Specification:

• Scanner: Optech Orion H300

• Points Per M2: 2 or greater


For details about flying height, scan angle, scan frequency, pulse rate and swath overlap please refer to the survey report.


Data Processing:

The LiDAR sensor positioning and orientation (POS) was determined using the collected GPS/IMU datasets and Applanix POSPac software.


For Benchmark and Base Station information, please refer to the survey report.


The POS data was combined with the LiDAR range files and used to generate LIDAR point clouds in NZTM and ellipsoidal heights. This process was undertaken using Optech LMS LiDAR processing software. The data was checked for completeness of coverage. The relative fit of data in the overlap between strips was also checked.


The height accuracy of the ground classified LiDAR points was checked using open land-cover survey check site data collected by Sounds Surveying Ltd. This was done by calculating height differences statistics between a TIN of the LiDAR ground points and the checkpoints.


The positional accuracy of the LiDAR data has been checked by overlaying Sounds Surveying Ltd surveyed data over the LiDAR data displayed coded by intensity. The data was found to fit well in position.


All product deliverables supplied in terms of NZTM map projection and NZVD2016 height datum.


Classification of the point cloud followed the classification scheme below:

2 - Ground

14 - Above Ground


Re-processing:

This data was reprocessed by Aerial Surveys for LINZ relative to the NZVD2016 vertical datum, and supplied as 1:1000 nominal scale (2500 720m high x 480m wide subtiles per full NZ Topo50 sheet).


Lakes and large rivers were hydroflattened in the Bare Earth Digital Elevation Model.


The deliverables to LINZ were:


1m gridded bare earth digital elevation model (DEM)

1m gridded digital surface model (DSM)

Classified point cloud


Reprocessed Classified Point Cloud Data was reclassified by LINZ and is hosted by Open Topography: the Above_Ground (14) points were reclassified as Unassigned classification (1).

Hierarchy level
Dataset
Other

dataset

Reference System Information

Reference system identifier
2193

Metadata constraints

Use limitation

Copyright of this work is owned by Toitū Te Whenua Land Information New Zealand


© LINZ

Use constraints
Copyright

Metadata constraints

Use limitation

Released by LINZ under Creative Commons Attribution 4.0 International (CC BY 4.0) with:


Following Attribution:


"Sourced from the LINZ Data Service and licensed for reuse under CC BY 4.0"


For details see https://www.linz.govt.nz/data/licensing-and-using-data/attributing-linz-data

Use constraints
License

Metadata

Metadata identifier
eebef1ba-8b9b-4053-5f7c-a085a5ba4e5a

Language
English
Character encoding
UTF8
Contact
Role Organisation Electronic mail address
Point of contact

Toitū Te Whenua Land Information New Zealand

customersupport@linz.govt.nz

Type of resource

Resource type
Dataset
Name

dataset

Date info (Revision)
2020-12-15

Metadata standard

Title

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Edition

1.1

 
 

Spatial extent

N
S
E
W


Keywords

ANZLIC Jurisdictions
New Zealand

Provided by

Access to the catalogue
Read here the full details and access to the data.


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