[Talk-GB] Environment agency LIDAR tiles

[Ed Loach]

The old data for the Tendring area that I processed at the time is still available.

 

Visible here

http://www.loach.me.uk/lidar/

 

With (old) notes here:

https://wiki.openstreetmap.org/wiki/User:EdLoach/Tendring_LIDAR

 

Ed

 

From: SK53 
Sent: 03 March 2021 13:24
To: Tom Crocker <tomcrockermail at gmail.com>
Cc: talk-gb at openstreetmap.org
Subject: Re: [Talk-GB] Environment agency LIDAR tiles

 

Hi Tom,

 

I'm not aware of a tiled dataset directly usable within OSM editors. The tiled data I am aware of are:

 

* As background layers on the NLS maps site

* On houseprices.io <http://houseprices.io>  (AFAIK the original EA releases)

 

The newer Lidar data (post 2018) has much more extensive coverage at 1 m resolution, but I'm not sure how much of the country has been covered yet.

 

When I've wanted to use this Lidar data, I've just downloaded tiles (the old data is in 1km square tiles, the new data in 5 km square tiles) and processed them in QGIS to generate a hillshaded DSM & a hillshaded DSM-DTM delta layer, which can be georeferenced & used in JOSM (via the imagery import plugin). Hillshades are often the most useful for interpretation. Other things might be to pull buildings from OSM into QGIS & extract maximum heights (from a DSM-DTM delta) for the buildings. I've also extracted contours at 1 m intervals & used something like the 3m contour to estimate building centroids to compare offset of OSM buildings (doesn't work for all if trees are nearby).

 

Jerry

 

On Wed, 3 Mar 2021 at 12:50, Tom Crocker <tomcrockermail at gmail.com <mailto:tomcrockermail at gmail.com> > wrote:

Sorry if this has been discussed before, I've just joined. I have seen some threads from 2015 discussing the Environment Agency LIDAR data, which seems to confirm my understanding that it would be fine to use the data in OSM. Are there any tile servers available for this, or some method of adding overlays to JOSM for example? I think it would be really useful in wooded areas.

 

Thanks

 

Tom

 

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