<div dir="ltr">Nice work Greg :)<br>
</div><span>
</span><br><div class="gmail_quote"><div dir="ltr">On Thu, 17 Aug 2017 20:13 Gregrs <<a href="mailto:gregrs@fastmail.co.uk">gregrs@fastmail.co.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA256<br>
<br>
Hi all,<br>
<br>
Standing on the shoulders of various other OSM contributors, I've<br>
written a BASH script [<a href="https://github.com/gregrs-uk/lidar2tiles" rel="noreferrer" target="_blank">https://github.com/gregrs-uk/lidar2tiles</a>] which<br>
uses GDAL to automatically process Environment Agency LIDAR 'composite'<br>
data and create map tiles which can be viewed in a browser or used in<br>
JOSM. Map tiles are coloured based on the height of surface features<br>
such as buildings and trees, calculated by subtracting the DTM from the<br>
DSM. This can make it easier to trace buildings more accurately because<br>
different roof heights are different colours. By default, features below<br>
1m are transparent, meaning that buildings can easily be distinguished<br>
from ground level and the tiles can be viewed on top of Bing imagery,<br>
for example. The colours can be customised, of course.<br>
<br>
I've created map tiles for the area around Canterbury, which you can<br>
view here [<a href="http://gregrs.dev.openstreetmap.org/lidar" rel="noreferrer" target="_blank">http://gregrs.dev.openstreetmap.org/lidar</a>]. They can be<br>
added to JOSM temporarily using this link<br>
[<a href="http://localhost:8111/imagery?title=EA%20LIDAR%20Open%20Data%20Canterbury&type=tms&url=http://gregrs.dev.openstreetmap.org/lidar/%7Bzoom%7D/%7Bx%7D/%7B-y%7D.png" rel="noreferrer" target="_blank">http://localhost:8111/imagery?title=EA%20LIDAR%20Open%20Data%20Canterbury&type=tms&url=http://gregrs.dev.openstreetmap.org/lidar/{zoom}/{x}/{-y}.png</a>]<br>
if remote control is enabled, or added permanently as follows:<br>
<br>
* Click on Imagery > Imagery Preferences<br>
* Click on the '+ TMS' button<br>
* Enter the URL<br>
* <a href="http://gregrs.dev.openstreetmap.org/lidar/%7Bzoom%7D/%7Bx%7D/%7B-y%7D.png" rel="noreferrer" target="_blank">http://gregrs.dev.openstreetmap.org/lidar/{zoom}/{x}/{-y}.png</a> (note<br>
the -y) and a name for the layer<br>
* The layer will appear in the Imagery menu<br>
<br>
Please feel free to use the code<br>
[<a href="https://github.com/gregrs-uk/lidar2tiles" rel="noreferrer" target="_blank">https://github.com/gregrs-uk/lidar2tiles</a>] and to experiment!<br>
<br>
Greg<br>
<br>
- --<br>
Twitter: @gregrs_uk<br>
<a href="http://gregrs.dev.openstreetmap.org" rel="noreferrer" target="_blank">http://gregrs.dev.openstreetmap.org</a><br>
PGP key ID: 64907C8A<br>
Fingerprint: EBD1 077F CCDD 841E A505 3FAA D2E8 592E 6490 7C8A<br>
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</blockquote></div>