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

[Glynn Clements]

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".

-- 
Glynn Clements <glynn at gclements.plus.com>