Re: Contours

Rich Shepard <[email protected]> Mon, 18 Dec 2017 09:38:16 -0800 (PST)

Newsgroups	gmane.comp.gis.grass.user
Message-ID	<[email protected]>

On Mon, 18 Dec 2017, Shane Carey wrote:

> I have a large DTM (5m cell size) and it covers an area of 100,000km2. I
> need to create contours every 10meters in the dataset. If I tile the
> dataset and contour each tile, the data, the contours act funny at the
> edges, hence the need to process the area as one area. Is grass capable of
> doing this?

Shane,

   Yes. As long as you have sufficient memory and drive space. You can always
set the environment variable in ~/.bash_profile:

export=GRASS_VECTOR_LOWMEM=1

which will use available memory and not crash, while running more slowly.

   If I'm wrong I'm sure we'll both read about it. :-)

HTH,

Rich
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