LIDAR scans of England published as open data (17 TB!)

[Uldis Bojars]

Anglijas teritorijas LIDAR lāzer-skanējumi publicēti kā atvērtie dati:

https://environmentagency.blog.gov.uk/2015/09/18/laser-surveys-light-up-open-data/

All 11 terabytes of our LIDAR data will eventually be available through our new Open LIDAR portal under an Open Government Licence, allowing it to be used for any purpose.

Composite LIDAR data, which is annually updated and brings together all data from the last 17 years, has already been released. Composite data is available at 25cm, 50cm, 1m, and 2m resolutions, which in total covers over 72% of England.

The next data to be released will be Tiled LIDAR, which comes from individual dated surveys offering a ‘snapshot’ of locations at specific times. This will be followed by different data formats in the coming months and finally point cloud data.

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Tikmēr Latvijā par ģeotelpiskajiem atvērtajiem datiem var vienīgi sapņot.

[Uldis Bojars]

cilvēki to jau mēģina izmantot, lai papildinātu OpenStreetMaps:

http://chris-osm.blogspot.co.uk/2015/09/extracting-building-heights-from-lidar.html

P.S. labojums: 11 TB, nevis 17 TB :)

U.

[Ton Zijlstra]

In addition all LIDAR data for the Netherlands is available since the start of 2014 as well. Covers the country with 8 height datapoints per square meter. Used to detect all kinds of things, such as finding archeological sites by spotting small height differences in fields that cannot be seen with the naked eye. A new full survey of the country with LIDAR (AHN3) is currently underway and will run until 2019. The first datasets of AHN3 are available since last month. The previous two full sets AHN2 and AHN are both available (and allows spotting differences, like growth rates of trees). The data is available at www.ahn.nl (also for documentation) and through the Dutch open data portal if you search for AHN https://data.overheid.nl/data/dataset?q=AHN

All data is CC0 licensed.

best,

Ton

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Interdependent Thoughts
Ton Zijlstra

t...@tonzijlstra.eu
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http://zylstra.org/blog

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