[Talk-GB] Environment Agency LIDAR datasets OGL licensed now available

[Chris Hill]

I've had a go at extracting the height of buildings from the Environment 
Agency LIDAR, and it seems possible.

I loaded the EA data into a database and found all the height points 
within the polygon of an existing building outline. The highest value is 
the height of the building. From that I could (haven't yet) create a 
file of changes to add the height to each building. One thing that 
causes a problem is a tree near a house as it can create a higher point 
than the house.

Using this would be an import and would need to go through the import 
declaration process IMO. I have also thought about creating an editor 
overlay to show the heights so they can be added manually. It's more 
work and I think it's still really an import, but checking each height 
as it gets added should spot anomalies.

I'm going to tidy up the process and write it up in detail as a blog 
post over the next few days so anyone else can try it out too.

-- 
Cheers, Chris
user: chillly