West Coast Region Data - Page 12

The Nelson 1955 to NZVD2016 Conversion Raster provides users with a two arc-minute (approximately 3.6 kilometres) raster image of the conversion of normal-orthometric heights from the Nelson 1955 local vertical datum to the New Zealand Vertical Datum 2016 (NZVD2016).

The conversion value is represented by the attribute “O”, in metres.
This conversion and NZVD2016 are formally defined in the LINZ standard LINZS25009.

The height conversion grid models the difference between the Nelson 1955 vertical datum and NZVD2016 using the LINZ GPS-levelling marks. From the GPS-levelling marks the expected accuracy is better than 2 centimetres (95% Confidence interval).

More information on converting heights between vertical datums can be found on the LINZ website.

This layer contains the index tiles for LiDAR data in the West Coast Region, captured between 2020 and 2022.

• The DEM is available as layer West Coast LiDAR 1m DEM (2020-2022).

• The DSM is available as layer West Coast LiDAR 1m DSM (2020-2022).

• The LAS point cloud and vendor project reports are available from OpenTopography.

LiDAR was captured for West Coast Regional Council by Aerial Surveys between 16 May 2020 and 14 February 2022. These datasets were generated by Aerial Surveys and their subcontractors. Data management and distribution is by 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 4 pulses/square metre.

Vertical Accuracy Specification is +/- 0.2m (95%)
Horizontal Accuracy Specification is +/- 1.0m (95%)

Vertical datum is NZVD2016.

This layer contains the DEM for LiDAR data in the West Coast Region, captured between 2020 and 2022.

• The DSM is available as layer West Coast LiDAR 1m DSM (2020-2022).

• The index tiles are available as layer West Coast LiDAR Index Tiles (2020-2022).

• The LAS point cloud and vendor project reports are available from OpenTopography.

LiDAR was captured for West Coast Regional Council by Aerial Surveys between 16 May 2020 and 14 February 2022. These datasets were generated by Aerial Surveys and their subcontractors. Data management and distribution is by 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 4 pulses/square metre.

Vertical Accuracy Specification is +/- 0.2m (95%)
Horizontal Accuracy Specification is +/- 1.0m (95%)

Vertical datum is NZVD2016.

This layer contains the DSM for LiDAR data in the West Coast Region, captured between 2020 and 2022.

• The DEM is available as layer West Coast LiDAR 1m DEM (2020-2022).

• The index tiles are available as layer West Coast LiDAR Index Tiles (2020-2022).

• The LAS point cloud and vendor project reports are available from OpenTopography.

LiDAR was captured for West Coast Regional Council by Aerial Surveys between 16 May 2020 and 14 February 2022. These datasets were generated by Aerial Surveys and their subcontractors. Data management and distribution is by 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 4 pulses/square metre.

Vertical Accuracy Specification is +/- 0.2m (95%)
Horizontal Accuracy Specification is +/- 1.0m (95%)

Vertical datum is NZVD2016.