Paolo wrote:
> If I zoom to a small map full of nulls, with only a
> non-nulla area on one side, and
> zoom back to the full extent, I do not see the difference:
fyi 'g.region zoom=' starts at the current region settings*,
so maybe try:
g.region rast=foo
g.region zoom=foo
* this lets you zoom in on individual clusters within the map
Hamish