Looking for map data to create a terrain mesh.

Energize

Energize

Energize

Caporegime
Joined
12 Mar 2004
Posts
29,962
Location
England
Does anyone know where I can find map data for England that would allow me to create a terrain mesh at a resolution of 10m?
 
Look up "google earth microdem" in google and theres all kinds of guides, mostly about using microdem to export geometry data but usually have links to other resources, etc. for doing it.
 
Not sure about 10metres, but a dev at work used the google maps api to generate 3D region mesh's onto a PDF.

At least it's one option :-)
 
Yeah not sure about 10m - a project I was working on had the UK and europe to a little under 40m which I think is the same data as google but I'm not really sure.
 
Thanks for your suggestions, the reason I say 10m is because that is the claimed resolution of the wire frame used by the applicants for planning permission we are trying to oppose.
 
Have a look a NASA's SRTM data. I used it in my uni dissertation :)

They have different levels of detail available, but I have a feeling the only location it covers in the accuracy you want is the US. It's been a while though so things might have changed since then.
 
A 10m DEM would require LIDAR flyover, very costly. You won't win any planning permission battles like that!

What are you opposing?

You might be better off with high accuracy GPS
 
oulton said:
A 10m DEM would require LIDAR flyover, very costly. You won't win any planning permission battles like that!

What are you opposing?

You might be better off with high accuracy GPS
Click to expand...

High accuracy GPS is pretty costly too! £15k at least to buy, or you're looking at £500-750~ a day as a service.
 
oulton said:
What are you opposing?
Click to expand...

A wind turbine. The applicants have submitted a photo composite of how the wind turbine would look from a certain viewpoint using software called "windfarm", however it's accuracy looks to be questionable and they used a focal length of 50mm when taking the photo when the guidelines state that 75mm is preferred, so I've taken a photo from the same co-ordinates at 75mm and want to create my own composite from it using a similar methodology. The best solution I suppose would be to use the windfarm software bit I'm having a little trouble getting to grips with it tbh, I can't seem to find a way to import DEM data.

Diagro said:
Why are you trying to appose someones planing permission?
Click to expand...

Wind turbine in the middle of the countryside very near by two equestrian businesses and a popular riding route. We successfully got it refused the first time but now they are appealing.

Windle said:
High accuracy GPS is pretty costly too! £15k at least to buy, or you're looking at £500-750~ a day as a service.
Click to expand...

I think with the potential impact on the business of this project that expenditure would be justified!

Actually that ordnance survey link FuriousGeorge provided mentions a OS Terrain 5 product that appears to be accurate to 5m, I think it has to be purchased though.
 
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I've received an email stating that their wireframe model is composed using 5m grid data, based on their methodology report which states they used ordnance survey data.

For each viewpoint a wireframe diagram is prepared using ‘Wind farm’ computer
software based on Ordnance Survey Landform Panorama and Profile elevation data
at 50m 10m and 5m resolution. Curvature of the Earth, atmospheric refraction and
transformation for a cylindrical projection are included in the wireframe generated.
The outline of the turbine is generated in the wireframe based on generic models
using the hub height and blade length from the candidate turbine.
Click to expand...
 
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