2005 AK DGGS Lidar: Unalakleet Point Cloud files with Vertical Datum North American Vertical Datum of 1988 (NAVD88) using GEOID12B

Below are links to the files that make up the 2005 AK DGGS Lidar: Unalakleet dataset.

Vertical datumNorth American Vertical Datum of 1988 (NAVD88) using GEOID12B in meters
Horizontal projection/datumNAD83(HARN) / UTM Zone 4N

Informational files are listed first (such as geospatial indices, metadata, and so on), followed by the files. To download in bulk, it is suggested you use a download manager such as wget, uget, or filezilla for example. The geospatial index file in shapefile format also has a URL attribute that some GIS programs can use to download files. You can also subset the data, make derived products, and change projection, datum, etc., using the Digital Coast Data Access Viewer (add to cart, the link to bulk download will take you here).

The files are in LAZ format, a lossless compressed version of the ASPRS LAS format. The compression and decompression can be done with the free and open source 'laszip' program available at https://rapidlasso.de/laszip/ (source at https://github.com/LASzip/LASzip). This is not the same as the more general zip format. You may also want to try the uGet program using the list of URLs in file urllist_2005_Alaska_DGGS_Unalakleet_m3648.txt. Several posts on the GeoZone blog provide help with downloading, including:

Example to download entire data set using wget (note: sufficiently new and trusted pre-compiled Windows versions can be hard to find):
wget -np -r -nH -L --cut-dirs=2 https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/3648/index.html/
This will give you the directory structure starting with geoid12b. Modify the --cut-dirs=2 argument to modify the start directory (e.g. --cut-dirs=4 will start at $missionid). Wget is a command-line program and the output will be to the directory you run it in. More options and information can be found at https://www.gnu.org/software/wget/manual/wget.html. The other options in the example mean:


If you have problems with wget that look like an authorization or certificate issue, you may need to add the option "--no-check-certificate". Windows users may want to install the Windows Subsystem for Linux to get a current wget.

The total size to download all the files is 70M. There are 19 LAZ files and the summary class table is:

Class NumberClass NamePoints
1Unclassified4621822
2Ground7876267
3Low Vegetation1053410
4Medium Vegetation45235
5High Vegetation148122
6Building190720
9Water4039751
10Ignored Ground (near breakline)24567

Cloud Access

This data is in an AWS S3 bucket at s3://noaa-nos-coastal-lidar-pds/laz/geoid12b/3648.

Meta Information

Tile Index: tileindex_2005_Alaska_DGGS_Unalakleet_m3648.zip (Shapefile)
Tile Index: tileindex_2005_Alaska_DGGS_Unalakleet_m3648.gpkg (Geopackage)
Metadata: metadata_2005_Alaska_DGGS_Unalakleet.xml
Metadata: metadata_2005_Alaska_DGGS_UnalakleetforHumans.html
XYZ range table: minmax_2005_Alaska_DGGS_Unalakleet_m3648.csv
URL List: urllist_2005_Alaska_DGGS_Unalakleet_m3648.txt

Supplemental Info

Files

ak2005_unalakleet_m3648.kmz
ak2005_unalakleet_m3648_report.pdf

Spatial Temporal Asset Catalog (STAC)

Entwine Format

See entwine.io for more information on the Entwine Point Tile format.

EPT JSON file
View Point Data in Potree 3D Viewer

Point Cloud Files

20051027_0410_7086.copc.laz
20051027_0410_7087.copc.laz
20051027_0410_7088.copc.laz
20051027_0411_7082.copc.laz
20051027_0411_7083.copc.laz
20051027_0411_7084.copc.laz
20051027_0411_7085.copc.laz
20051027_0411_7086.copc.laz
20051027_0411_7087.copc.laz
20051027_0411_7088.copc.laz
20051027_0412_7081.copc.laz
20051027_0412_7082.copc.laz
20051027_0412_7083.copc.laz
20051027_0412_7084.copc.laz
20051027_0412_7085.copc.laz
20051027_0412_7086.copc.laz
20051027_0412_7087.copc.laz
20051027_0413_7081.copc.laz
20051027_0413_7082.copc.laz

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