Coverage from a Vector {Plow,Plough,Spray,Search}ing
James Cameron
quozl at us.netrek.org
Tue Jun 27 01:05:37 EDT 2000
On Mon, May 29, 2000 at 07:50:26PM -0700, Eric G . Miller wrote:
> What about v.to.rast? That is, you have a vector line (don't build
> areas!), you convert it to a raster with v.to.rast and then you make the
> raster grow to match the application spread.
Yes, I see. r.grow is the one to use.
> Hmm, more difficult. I see where the application would be greater on the
> inside of a curve than the outside, and would be dependent on the angle
> of the curve (overlap). Perhaps this is a job for mapcalc? Is the vector
> track over regular units in time, or is it continuous with a speed
> element?
Over regular units in time, I think. The GPS gives me an x/y location
every second. From that it (or I) can calculate the speed.
To make a linear spread, I could r.mapcalc "add" the original map to
the r.grow output. Then do it again a few times.
--
James Cameron mailto:quozl at us.netrek.org http://quozl.netrek.org/
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