[GRASS-user] v.clean process killed itselt!?

[Nikos Alexandris]

On Sun, 2009-01-11 at 12:32 +0000, Glynn Clements wrote:
> Nikos Alexandris wrote:
> 
> > In other words one needs a powerful *workhorse* to work with very big
> > maps.
> 
> It depends upon the task. For vector maps, it looks that way. Not all
> modules will have such requirements, but being unable to perform
> snapping could be a problem.
> 
> Most (but not all) raster modules can handle arbitrarily large maps,
> with memory consumption proportional to the size of a row rather than
> the size of the entire map.
> 
> > May I add in the osgeo-wiki [1] something like:
> > 
> > Very big vector maps (raster?) (>2GB?) require maximal amount of RAM
> > (>=6GB?).
> 
> It isn't quite that simple. E.g. maps with many small areas will have
> relatively more centroids, which affect the size of the coordinate
> file but don't affect the memory usage of "v.clean tool=snap".
> 

So it's a (bit) complicated issue. Thank you for all the details.
Kind regards, Nikos