Fw: Re: Adding Terrain data/viewing

[Wookey]

Matt Kirby <mattkirby99 at hotmail.com> wrote:
> Attached is a screenshot of how 'our' version looks. Phil put an extra pen
> on the toolbar for terrain and the command we use is *terrain. Tim put
> together a 250m grid over Mulu and placed this over a 1:50,000 map to gain
> the level for each point from the contour data. It works a treat. The
> benefit of the terrain being in blue is that it doesn't interfere with the
> surface surveys and the caves can still be clearly seen through it. Our
> problem with using *surface was that it was very difficult to see through
> and you 'lost' the normal surface traverses in the sea of black and white.

[ You can see matts 4Mb .bmp file converted to a 135K png here:
http://wookware.org/files/muluterrain.png
]

OK, so that's just reading in survex data in the local co-ordinate
system, which is what terraintool puts out. You can tell it
(terraintool) to do a 250m grid too (which I think is helpful on big
datasets - our austria data suffers from too many surface lines with a
50m spacing). Although getting the nice outline shape would still need
manual work.

So the patch is to allocate data inside a *terrain block to a new
button and line colour. I agree that separating terrain from surface
is handy, as is the colour change. This is actually very easy to do.

Now, if someone can just find phil's patch to save us doing it again.

Wookey
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