North Pennine LIDAR Image Downloads



If you are new to LIDAR you can find background information on this web page. The local LIDAR coverage is far from complete, nevertheless it is still a marvellous resource. This page contains links to view the local LIDAR images that are available as indicated on the 10sq km grid map below. The resolution is generally at 1 metre per pixel although in a few smaller areas 50cm or 25cm per pixel is occasionally available, however the downloads on this page are all at 1m as it has the most extensive coverage. The format chosen does not show woodland or buildings. If you are interested in the technical aspects of this data including mapping survey data then have a look at this page.

LIDAR images can be illuminated by a 'virtual sun' from any direction of the compass and at varying elevations. Two downloads have been made available with the 'virtual sun' at 210° and 300° from north (azimuth), and at 40° in elevation. Therefore the two images show shadows cast at 90° from one another. As image definition is crucial and each map covers 10km x 10km, the file sizes can be up to 43MB each depending on the LIDAR coverage within the tile. The next images illustrate what LIDAR looks like. The grid chosen is NY64 located west of Alston.        

NY64 is shown left. As you can see the available image is only approximately half of the 10km x 10km grid, and then within that half perhaps only 40% has LIDAR data.


The red X at the top right of the image is the location of Whitley Castle (Roman Fort), which is shown in detail in the two images below.


This indicates how you need to zoom into LIDAR images and then pan around them to reveal the detail. You can zoom in further still, but as these are raster images they will eventually begin to pixelate.
These two images have been illuminated by a 'virtual sun' from 300° (left image) and 210° (right image).

You can see how the appearance of individual features varies.
 

Downloads:                                                     

 A zip file for each 10km x 10km grid can be downloaded.

Each zip file contains:

a)  A README.txt file regarding conditions of use and an explanation of the six digit British National Grid co-ordinates used etc.,

b) The two LIDAR images at 210° and 300° .

c) A grid image file that shows the LIDAR against the British National Grid.

d) An OpenStreetView Map image of that grid to aid orientation.

e) Some zip files contain the coverage map right. It can also be  downloaded by clicking it.


View the images in your image viewer; where you should be able to zoom and pan around each image. In many image viewers the zoom control is the + and - keys (or mouse wheel control) and panning is achieved by holding a left click on the image and dragging, or by use of the keyboard arrow keys.

The labeled 10km grid map (right) indicates the available 56 grids.


For coverage further south down to Skipton see this page.

 



The red links below will save all files for the selected grid to your 'downloads' folder as a zip file.

Note: The zip files range from NY81 only 2.6MB to NZ26 at 92.6MB
 
NY68 NY78 NY88 NY98 NZ08 NZ18 NZ28
NY67 NY77 NY87 NY97 NZ07 NZ17 NZ27
NY66 NY76 NY86 NY96 NZ06 NZ16 NZ26
NY65 NY75 NY85 NY95 NZ05 NZ15 NZ25
NY64 NY74 NY84 NY94 NZ04 NZ14 NZ24
NY63 NY73 NY83 NY93 NZ03 NZ13 NZ23
NY62 NY72 NY82 NY92 NZ02 NZ12 NZ22
NY61 NY71 NY81 NY91 NZ01 NZ11 NZ21
 

If you use this data in any form of publication or lecture then please acknowledge: altogetherarchaeology.org

Image processing:
Each OS grid is 10km square or 10,000m x 10,000m. The tiff image produced using QGIS is 10,000 x 10,000 pixels hence the 1m resolution where 1 pixel represents 1 square metre. The tiff image is converted to a jpg file type using zero compression to maximise sensitivity. The jpg image size is the same as the tiff at 10,000 x 10,000 pixels. The jpg images has had a gamma correction factor of 0.6 applied to improve contrast.

Data courtesy of the Environment Agency. LIDAR images are released as part of the UK Government's open data scheme.
Maps: ©OpenStreetMap contributors. LIDAR data processed by Stephen Eastmead (webmaster@altogetherarchaeology.org).