Hi Crispin

 

OK I’ll bite (out of curiosity) – how much does it cost to take a whole county worth of these files and convert into useable ARCGIS dataset? DCC are interested in getting this info, but if it will take over 2wks for 2 pcs to process the data ourselves I have a feeling my GIS colleagues will tell me to take a hike and made a bid for their time and by the time it gets into their programme of work it will be 2+ years…

 

Cheers

Lee

 

 

 

H James

See below, I wonder if you could forward the message below to the list, as my email address has changed and I cannot post until JISC have tweaked my account.

Also, regarding your specific question, we do have scripts for creating TAB from jgw/asc, but they are not currently packaged up for non-developers to use. We could probably process your files for £100 – a couple of hours work to process and resupply – let us know if you are interested. Or someone out there may have suitable scripts they can give you.

All the best

Crispin

Hi James/All

If anyone hasn’t got time/machines/energy/know-how to do this themselves, but does have some cash (we can dream), we can process the LiDAR data into nice datasets for MapInfo or ArcGIS, including hill-shade, slope, aspect, local relief, with TAB files for MapInfo, as described here http://www.esdm.co.uk/lidar-processing

(showing some nice samples from Leicestershire – thanks Helen).

Yours

Crispin

Hi All,

I have received all the free LIDAR data from the EA for the whole of Suffolk. 

We use MapInfo.

Anyway I want to put all the .jpg's on a seamless layer which I thought would be easy however:

The first problem I have encountered was all the geo-referencing files had the wrong extension .jpgw not .jgw.  I managed to batch change these using the command prompt method suggested at http://www.howtogeek.com/111859/how-to-batch-rename-files-in-windows-4-ways-to-rename-multiple-files/ .

However I am now stuck as MapInfo wants me to tell it which projection I want it to use for each .jgw file and there are circa 20,000!!!

Does anyone know of a way to do this process on mass?

Any help or guidance would be greatly appreciated.

Regards

James Rolfe

Assistant Archaeological Officer (H.E.R.)

Archaeological Service

Economy, Skills and Environment

Suffolk County Council

9-10 The Churchyard, Shire Hall,

Bury St Edmunds, IP33 1RX

Tel: 01284 741237

Mob: 07870867366

Email: [log in to unmask]

Web site: www.suffolk.gov.uk

From: Issues related to Historic Environment Records [mailto:[log in to unmask]] On Behalf Of Miles Johnson
Sent: 27 August 2013 15:32
To: [log in to unmask]
Subject: Re: Free LIDAR!

Not sure about other GIS setups, but in MapInfo you can play with the translucency settings to view a copy of the same tile (at the same time) with different light settings – i.e. a composite lidar image.  Doesn’t work so well with more than a couple of tiles.

We got hold of the ascii lidar tiles at the end of last year and have since located (probably) in the hundreds of previously unrecorded earthwork sites - including a small number of ‘really significant’ ones.  There are many tiles we haven’t looked at yet - it’s really worth getting.

Miles

Helen et al,

You should be able to download them as "asc" files which come with MapInfo tab files - careful though as trying to load too many at a time will crash the system (or it does with me anyway).

Mike Hemblade at North Lincs also showed me how to get them to show up better by turning on relief shadows - open the "Map" drop down menu, then select "modify thematic map" click on the "styles" button and enable the relief shading. You can also change the tolerance/level of the shading and the colours to make certain features stand out more (or less) which is useful when a tile has big topographical differences.

Hope that helps,

Hugh

Hugh Winfield | Archaeologist |
North East Lincolnshire Regeneration Partnership | Origin 1, Europarc, Grimsby, DN37 9TZ 
W 01472323586 | M 07825125964

From: Issues related to Historic Environment Records [mailto:[log in to unmask]] On Behalf Of Helen Wells (Archaeology)
Sent: 27 August 2013 14:13
To: Winfield, Hugh
Subject: Re: Free LIDAR!

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