vector polygons

GRASS GRASS user
1

Rica Saporta writes:

i was wandering is there a way to convert a vector polygon drawn by the user
on a "background" raster layer into a binary (1 on the inside, 0 on the outside)
layer of its own?

Grass 4.1 has the command r.digit for this. And tiggers ARE wonderful things.

Philip Verhagen

--

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    Regionaal Archeologisch Archiverings Projekt

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2

On Thu, 14 Jul 1994, motte wrote:

Rica Saporta writes:
>
> i was wandering is there a way to convert a vector polygon drawn by the user
> on a "background" raster layer into a binary (1 on the inside, 0 on the outside)
> layer of its own?
>
Grass 4.1 has the command r.digit for this. And tiggers ARE wonderful things.

Philip Verhagen

To which I should add, that Grasses v.digit module also has an option for
displaying a background cell map during digitizing. You must label your
polygons "1" yourself, however - this is not done automatically.

P. Martijn van Leusen
Institute of Prehistory, University of Amsterdam martijn@scanner.frw.uva.nl