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Orpbit
Joined:
24-06-2012
Messages: 1586
from Shropshire
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|  New Message Posted!2016-03-15 16:44
Correction:
Apologies, the uploaded DSM files are actually for 2001. I annotated the images incorrectly, and never noticed. I've uploaded with corrected details!
Still working on Avebury.
Cheers,
Richard
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Energyman
Joined:
16-08-2004
Messages: 801
from Forest of Dean
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| New Message Posted!2016-03-15 08:18
Actually, I should have said interpolation, not hillshade. You can tell it colour in the different contour heights. Very useful for working out sightlines in dense woodland, for instance.
The Welsh site is fantastic, Sem. Thanks for the link
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Energyman
Joined:
16-08-2004
Messages: 801
from Forest of Dean
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| New Message Posted!2016-03-15 06:56
And this is the same with road maps superimposed, at 50% transparency.
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Energyman
Joined:
16-08-2004
Messages: 801
from Forest of Dean
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| New Message Posted!2016-03-15 06:39
This is one I did of the Longstone area, Staunton at 1m tiles resolution, with hillshade and contours layers added.
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Orpbit
Joined:
24-06-2012
Messages: 1586
from Shropshire
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| New Message Posted!2016-03-15 01:42
Stonehenge:
I've uploaded three files to Google Drive on this link:
https://drive.google.com/folderview?id=0B8iJm9sKwoLhSVF6STVsUzFZNTA&usp=sharing
All are from the DSM 1m tile set for 2006. Two are 3D verticals a little over 3MB each, one at vertical exaggeration (VE) x1, the other at VE x 2. These are just to get a feel for the relief of the wider landscape.
The third is pretty large at over 32MB, and as detailed as I can get it for such a large area with just one set of angles - azimuth 275° and vertical 0°.2. You can increase its resolution to a certain extent on line but you will need to download it to get the full res. and bigger - you can enlarge to 200% and more while retaining most of the detail.
I used QGIS. The images are for grid square SU14 only.
I downloaded the files from this link:
http://environment.data.gov.uk/ds/survey/#/survey
Click on the map for the OS grid square, and the available sets appear below, including the coverage within each square by clicking the "on/off" button.
2006 was a good year for DSM retrieval because of the drought conditions. I've compared a small area with other years and DTM renders. Unfortunately much of grid square is not available in DTM.
Does anyone know if any of the area has been surveyed at greater than 1m resolution?
I haven't bothered with any fancy colouring, as the 3D images are more than adequate for my purposes - for which you need a pair of red/cyan 3D glasses, although red/blue should work almost as fine.
Enjoy!
Richard
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TimDaw
Joined:
01-06-2013
Messages: 1
from United Kingdom
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| New Message Posted!2016-01-10 09:57
Thanks for the link - I have borrowed it to update my simple guide, linked below. Cheers Tim
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Orpbit
Joined:
24-06-2012
Messages: 1586
from Shropshire
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| New Message Posted!2016-01-09 11:46
Tim Daw has posted re - LiDAR. Don't want to steal his thunder so here's the link:
http://www.sarsen.org/2016/01/simple-how-to-view-free-lidar-mapping.html
Cheers,
Richard
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juamei
Joined:
28-11-2002
Messages: 47
from Buxton
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| New Message Posted!2015-12-26 07:45
Us at the HJ have used the original set to create our Xmas competition this year:
https://heritageaction.wordpress.com/2015/12/23/christmas-competition/
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sem
Joined:
12-11-2003
Messages: 2819
from Bridgend,S.Wales
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| New Message Posted!2015-11-07 18:55
Wales released it's own version on Monday and is available here -
http://lle.gov.wales/home?lang=en
To use on-line click on 'LiDAR Data Now Available' followed by the link to 'lle download portal" and finally on 'Preview'. Navigate the map as per Google and use the 'blue thingy' in the top right of the map to choose your base map and detail.
Looks good but it doesn't include in full localities I'm interested in (eg Carmarthan Fans) GGRRRRRRR!!
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Orpbit
Joined:
24-06-2012
Messages: 1586
from Shropshire
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| New Message Posted!2015-11-03 00:47
For those in the Marches border area (Shropshire/Powys) there's an online facility here:
http://www.aocarchaeology.com/openhills/lidar/viewer.html
Click the "+" button at top right to select base layers. you can also download a kml file to use with Google Earth. However, the opacity feature does not work using this route.
The LiDAR survey was undertaken as part of the Landscape Partnership Scheme, which holds a variety of events, including archaeology investigation with volunteers, led by archaeologists from Shropshire Council and CPAT (Clwyd-Powys Archaeology Trust). We've discovered some interesting features as a result!
The LiDAR base is very useful for creating presentation slides:
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