Hello,<br><br>I am wondering if there is a way to convert raster to vector in GRASS without the smoothing. I want to keep the "blocky" look of the raster boundaries to their original pixel extents. I find too much detail is lost with the smoothing. Are there any other open source methods to do this if not in GRASS. Thanks !
<br>Tom<br><br>from the GRASS help: "To produce a
better-looking vector map, <em>r.to.vect</em> smoothes the
corners of the vector data as they are being extracted. At
each change in direction (i.e., each corner), the two
midpoints of the corner cell (half the cell's height and
width) are taken, and the line segment connecting them is
used to outline this corner in the resultant vector map.
(The cell's cornermost node is ignored.) Because vectors
are smoothed by this program, the resulting vector map will
not be "true" to the raster map from which it was created.
The user should check the resolution of the geographic
region (and the original data) to estimate the possible
error introduced by smoothing."