It sounds like he wants a Digital Elevation Model (DEM)

http://en.wikipedia.org/wiki/Digital_elevation_model

and then be able to visualize it. This kind of thing
is usually part of a Geographic Information System (GIS)

http://en.wikipedia.org/wiki/GIS

There is an open source GIS called GRASS

http://grass.itc.it/

that can do this.

Cheers,

Tim.

---
Tim Lahey
PhD Candidate, Systems Design Engineering
University of Waterloo
http://www.linkedin.com/in/timlahey

On Dec 2, 2008, at 4:44 AM, John Cremona wrote:

>
> I don't suppose that Sage can do this?  It is not clear what the input
> would be exactly.
>
> John Cremona
>
>
> ---------- Forwarded message ----------
> From: Colin Rourke <[EMAIL PROTECTED]>
> Date: 2008/12/1
> Subject: Re: maths-staff: Help ....
> To: [EMAIL PROTECTED]
>
>
> Hi guys
>
> A software problem.  Does anyone know of (or better have access to) a
> package which will take a map with countours and realise it virtually
> so that you can see what the lie of the land looks like from a given
> vantage point?
>
> Colin (R)
>
> >


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