GWRC BP31 1m contours 2020 (Porirua)
- opendata.gw.govt.nz
Updated Jul 2, 2021
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EmailClick to copy linkLink copiedCiteGreater Wellington Regional Council (2021). GWRC BP31 1m contours 2020 (Porirua) [Dataset]. https://opendata.gw.govt.nz/datasets/ce5a0aaf4c0e4952b25b0d828a009836Dataset updatedJul 2, 2021LicenseAttribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
License information was derived automaticallyArea coveredPoriruaDescription1m elevation contours based off a composite bare-earth LIDAR DEM of Wellington Region, New Zealand, 2020. Area of Topo Sheet BP31 (Porirua). Base DEM is the 2013 WAGGIS LIDAR regional DEM, reprocessed in 2017 by Landcare Research for LINZ. Additional, mainly later, DEMs have been mosaiced in to replace the regional DEM. For sheet BP31 this was based off data from PCC (2015).. Original region-wide 2013 LIDAR data captured at 1.3 points per square metre, to an accuracy of +/- 0.15m (1 sigma) in 2013-2014. Subsequent more localised LIDAR surveys have provided improved strike point densities and accuracies. Vertical datum is NZVD2016. Projection NZTM. Parent DEM cell size 1m. Contours have been smoothed by first applying focal statistics to the parent DEM (3x3 cell, mean), then generalising the resulting contours using the Douglas-Peucker method.
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GWRC 1m contours 2020 BP31 (Porirua)
- gwrc-open-data-11-1-gwrc.hub.arcgis.com
Updated Sep 3, 2021ShareFacebookTwitterEmailClick to copy linkLink copiedCiteGreater Wellington Regional Council (2021). GWRC 1m contours 2020 BP31 (Porirua) [Dataset]. https://gwrc-open-data-11-1-gwrc.hub.arcgis.com/maps/23139b2afe044bf3bb96832c62228323Dataset updatedSep 3, 2021Dataset authored and provided byGreater Wellington Regional CouncilLicenseAttribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
License information was derived automaticallyArea coveredDescription1m elevation contours based off a composite bare-earth LIDAR DEM of Wellington Region, New Zealand, 2020. Area of 50k topo sheet BP31 (Porirua).Base DEM is the 2013 WAGGIS LIDAR regional DEM, reprocessed in 2017 by Landcare Research for LINZ.Additional, mainly later, DEMs have been mosaiced in to replace the regional DEM, for this sheet based off data from PCC (2015).Original region-wide 2013 LIDAR data captured at 1.3 points per square metre, to an accuracy of +/- 0.15m (1 sigma) in 2013-2014.Subsequent more localised LIDAR surveys have provided improved strike point densities and accuracies.Vertical datum is NZVD2016. Projection NZTM. Parent DEM cell size 1m.Contours have been smoothed by first applying focal statistics to the parent DEM (3x3 cell, mean), then generalising the resulting contours using the Douglas-Peucker method.
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FacebookTwitterEmailAttribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
License information was derived automatically
1m elevation contours based off a composite bare-earth LIDAR DEM of Wellington Region, New Zealand, 2020. Area of Topo Sheet BP31 (Porirua). Base DEM is the 2013 WAGGIS LIDAR regional DEM, reprocessed in 2017 by Landcare Research for LINZ. Additional, mainly later, DEMs have been mosaiced in to replace the regional DEM. For sheet BP31 this was based off data from PCC (2015).. Original region-wide 2013 LIDAR data captured at 1.3 points per square metre, to an accuracy of +/- 0.15m (1 sigma) in 2013-2014. Subsequent more localised LIDAR surveys have provided improved strike point densities and accuracies. Vertical datum is NZVD2016. Projection NZTM. Parent DEM cell size 1m. Contours have been smoothed by first applying focal statistics to the parent DEM (3x3 cell, mean), then generalising the resulting contours using the Douglas-Peucker method.