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LiDAR - 2021 - Regional PGF
| File ID: |
FF27E291-A0D5-044B-E055-000000000001 |
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| Hierarchy Level: |
dataset |
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| Abstract: |
The PGF lidar 2021 dataset is a whole-of-region lidar acquisition captured Jan-March 2021. The dataset was acquired as a collaborative venture between LINZ, Waikato Regional Council and affected District Councils. The dataset was flown with the intension to cover the region with laser height sampling points at a rate of 4 pulses per square meter (but with achieved point density varying in dense vegetation), and at a height accuracy of 0.2m with respect to the NZVD2016 datum at 95% confidence (0.1 m RMSE). The dataset was flown in blocks that dissect the region into manageable chunks, and currently the lidar is stored by Council according to these as-supplied blocks. A future plan is to integrate the blocks into a single regional dataset record.
The dataset comprises 4 core products – a digital elevation model (DEM) providing a 1m tiled grid (tif) of ground heights; a digital surface model (DSM) providing a 1m tiled grid of surface topmost height (e.g., the top of vegetation); a tiled classified point cloud (PC); and a set of half-meter cartographic contours. Tiling of DEM, DSM and PC is according to the LINZ 1K tile dataset here: https://data.linz.govt.nz/layer/104692-nz-11k-tile-index/
The lidar data was collected according to the specification listed in the January 2020 version of the LINZ lidar national specification document (the current version can be found here):
https://www.linz.govt.nz/resources/guide/new-zealand-national-aerial-lidar-base-specification
For access to the data by external parties, the DEM, DSM products are available at the LINZ data service here and the PC can be downloaded here:
Derived products under development by WRC include a normalised digital surface model (nDSM) as the calculation of DSM-DEM providing the height of vegetation and other surface material above ground level; an intensity raster providing a location-accurate black and white image of object position; a watershed and river network resource; a hydraulically corrected DEM for flood modelling; a slope-segmentation layer; and set of half-meter engineering contours (the core product contours are cartographic/smoothed for clean interpretation). These and others will be added to the feature set listed under this metadata item as the products are completed.
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| Statement: |
For access to the data by external parties, the DEM, DSM products are available at the LINZ data service here and the PC and Waikato LiDAR Index Tiles can be downloaded here:
https://data.linz.govt.nz/layer/113203-waikato-lidar-1m-dem-2021/
https://data.linz.govt.nz/layer/113202-waikato-lidar-1m-dsm-2021/
and the PC product and vendor processing reports are available here:
https://opentopography.org/ or more specifically, here:
https://portal.opentopography.org/datasetMetadata?otCollectionID=OT.042023.2193.2
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| Keywords: |
DEM,DSM,Elevation,Height,LiDAR,Point cloud,Topography |
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| Topic Category: |
elevation:height above or below sea level |
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| Resource Reference Date: |
28/06/2023 |
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| Metadata URL: |
https://data.waikatoregion.govt.nz:8443/ords/f?p=140:12:0::NO::P12_METADATA_ID:12940 |
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Responsible Parties
| Role: |
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| Position: |
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| Organisation: |
Waikato Regional Council |
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| Delivery Point: |
160 Ward Street |
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| City: |
Hamilton Central |
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| Postal Code: |
3204 |
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| Country: |
New Zealand |
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| Phone: |
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Metadata
| Language: |
English |
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| Character Set: |
utf8 |
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| Standard: |
ANZLIC |
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| Standard Version: |
1.1 |
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Metadata Constraints
| Access Constraints: |
copyright |
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| Use Constraints: |
copyright |
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Download Links
Supporting Information Links
General Notes:
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