West Coast Region Data

This layer contains the index tiles for LiDAR data in the West Coast Region for Westport and surrounding area captured in June 2020.

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

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

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

LiDAR was captured for West Coast Regional Council by Aerial Surveys on 22 and 30 June 2020. 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 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 for Westport and surrounding area captured in June 2020.

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

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

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

LiDAR was captured for West Coast Regional Council by Aerial Surveys on 22 and 30 June 2020. 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 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 for Westport and surrounding area captured in June 2020.

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

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

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

LiDAR was captured for West Coast Regional Council by Aerial Surveys on 22 and 30 June 2020. 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 4 pulses/square metre.

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

Vertical datum is NZVD2016.

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.

Orthophotography in the West Coast Region taken in the flying season (summer period) 2016 -17. Coverage is in the Westland District.

Imagery was captured for the ‘West Coast Regional Council’ by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.

Data comprises:
•1,261 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:5,000 tile layout
•Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:5,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.

Imagery supplied as 30cm pixel resolution (0.3m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.6 m @ 68% confidence level in clear open spaces (2 sigma) over area of interest. ±2.0 m or better in the very steep terrain areas of
the Southern Alps.

Index tiles for this dataset are available as layer West Coast 0.3m Rural Aerial Photos Index Tiles (2016-17)

Orthophotography in the West Coast Region taken in the flying season (summer period) 2015 -16. Coverage is in the Grey and Buller districts.

Imagery was captured for the ‘West Coast Regional Council’ by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.

Data comprises:
•1,346 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:5,000 tile layout
•Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:5,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.

Imagery supplied as 30cm pixel resolution (0.3m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.6 m @ 1 sigma.

Index tiles for this dataset are available as layer West Coast 0.3m Rural Aerial Photos Index Tiles (2015-16)

Index Tiles ONLY, for actual orthophotos see layer West Coast 0.3m Rural Aerial Photos (2016-2017)

Orthophotography in the West Coast Region taken in the flying season (summer period) 2016 -17. Coverage is in the Westland District.

Imagery was captured for the ‘West Coast Regional Council’ by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.

Data comprises:
•1,261 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:5,000 tile layout
•Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:5,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.

Imagery supplied as 30cm pixel resolution (0.3m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.6 m @ 68% confidence level in clear open spaces (2 sigma) over area of interest. ±2.0 m or better in the very steep terrain areas of
the Southern Alps.

Index Tiles ONLY, for actual orthophotos see layer West Coast 0.3m Rural Aerial Photos (2015-16)

Orthophotography in the West Coast Region taken in the flying season (summer period) 2015 -16. Coverage is in the Grey and Buller districts.

Imagery was captured for the ‘West Coast Regional Council’ by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany,0632, New Zealand.

Data comprises:
•1,346 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:5,000 tile layout
•Tile layout in NZTM projection containing relevant information.

The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. The products are tiled into NZTopo50 1:5,000 tiles. Please refer to the supplied tile layout shape file for specific details, naming conventions, etc.

Imagery supplied as 30cm pixel resolution (0.3m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.6 m @ 1 sigma.

The NSN55-NZVD2016 grid enables 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.

NSN55-NZVD2016 is published on a two arc-minute grid (approximately 3.6 kilometres) extending over the benchmarks that nominally define the extent of the Nelson 1955 vertical datum (171.3° E to 174.4° E, 40.4° S to 42.7° S).

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 of NSN55-NZVD2016 is better than 2 centimetres (95% Confidence interval).

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

The NSN55-NZGD2000 grid enables the conversion of normal-orthometric heights from the Nelson 1955 local vertical datum directly to New Zealand Geodetic Datum 2000 (NZGD2000) ellipsoidal heights.

NSN55-NZGD2000 is published on a one arc-minute grid (approximately 1.8 kilometres) extending over the benchmarks that nominally define the extent of the Nelson 1955 vertical datum (171.3° E to 174.4° E, 40.4° S to 42.7° S).

The conversion value is represented by the attribute “delta”, in metres.

This grid is a combination of New Zealand Quasigeoid 2016 NZGeoid2016 and the NSN55-NZVD2016 height conversion grid. Where NZGeoid2016 is the reference surface for the New Zealand Vertical Datum 2016 (NZVD2016), while the NSN55-NZVD2016 grid models the difference between the Nelson 1955 vertical datum and NZVD2016 using the LINZ GPS-levelling marks.

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