What does zoom= do in g.region?
I tried a couple tests and it seemed to have no effect at all.
Michael
C. Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University
Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>
Michael Barton wrote:
What does zoom= do in g.region?
I tried a couple tests and it seemed to have no effect at all.
say you have a mostly NULL map with some data in the middle.
'g.region zoom=rastermap' first does like 'g.region rast=' then shrinks
in on all sides until it hits some data.
Hamish
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On Jan 26, 2008 10:29 PM, Hamish <hamish_b@yahoo.com> wrote:
Michael Barton wrote:
> What does zoom= do in g.region?
>
> I tried a couple tests and it seemed to have no effect at all.say you have a mostly NULL map with some data in the middle.
'g.region zoom=rastermap' first does like 'g.region rast=' then shrinks
in on all sides until it hits some data.
Cool feature - didn't know that yet!
Let me suggest to re-word
zoom Raster map to zoom into
since this doesn't say anything. Maybe:
zoom Raster map to zoom into (zoom to data area)
OK, something better would be appreciated.
Markus
> Michael Barton wrote:
> > What does zoom= do in g.region?
> >
> > I tried a couple tests and it seemed to have no effect at all.
Hamish:
> say you have a mostly NULL map with some data in the middle.
> 'g.region zoom=rastermap' first does like 'g.region rast=' then
> shrinks in on all sides until it hits some data.
Markus:
Cool feature - didn't know that yet!
Let me suggest to re-word
zoom Raster map to zoom intosince this doesn't say anything. Maybe:
zoom Raster map to zoom into (zoom to data area)OK, something better would be appreciated.
Changed in SVN. But it is more interesting than I thought. It shrinks
inwards but doesn't perform the rast= task first. So it can shrink to
interior clumps if already zoomed in.
for example:
#spearfish
g.region rast=fields
d.mon x0
d.rast fields
d.grid 1000 -n
g.region n=4926600 s=4921800 w=591500 e=596300
d.redraw
g.region zoom=fields
d.redraw
So 'g.region zoom=' can be used to zoom in on raster features, which
may be a more general tool than a shrinking version of rast=.
Now what does 'g.region align=' do?
Hamish
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