[GRASSLIST:5437] vectoroverlay tutorial

GRASS GRASS user
1

I am looking at the vector overlya/clipping tutorial and I have a question, I am trying to combine vector maps in such a way that the logic goes like this:

Display vector features from map1 and map2, but not those features that appear on both map1 and map2.

Is this possible?

Thanks,

Kirk

Kirk R. Wythers
Dept. of Forest Resources
University of Minnesota
email: kwythers@umn.edu
tel: 612.625.2261
fax: 612.625.5212

2

Kirk,

I think this is the xor operator.

Michael

On 1/19/05 9:14 AM, "Kirk R. Wythers" <kwythers@umn.edu> wrote:

I am looking at the vector overlya/clipping tutorial and I have a
question, I am trying to combine vector maps in such a way that the
logic goes like this:

Display vector features from map1 and map2, but not those features that
appear on both map1 and map2.

Is this possible?

Thanks,

Kirk

Kirk R. Wythers
Dept. of Forest Resources
University of Minnesota
email: kwythers@umn.edu
tel: 612.625.2261
fax: 612.625.5212

____________________
C. Michael Barton, Professor of Anthropology
School of Human Evolution and Social Change
PO Box 872402
Arizona State University
Tempe, AZ 85287-2402
USA

Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>

3

Thanks Michael,

xor was the solution. My particular project will require some careful assembly with multiple v.overlays to get it right. However, it looks promising.

Kirk

On Jan 20, 2005, at 12:25 AM, Michael Barton wrote:

Kirk,

I think this is the xor operator.

Michael

On 1/19/05 9:14 AM, "Kirk R. Wythers" <kwythers@umn.edu> wrote:

I am looking at the vector overlya/clipping tutorial and I have a
question, I am trying to combine vector maps in such a way that the
logic goes like this:

Display vector features from map1 and map2, but not those features that
appear on both map1 and map2.

Is this possible?

Thanks,

Kirk

Kirk R. Wythers
Dept. of Forest Resources
University of Minnesota
email: kwythers@umn.edu
tel: 612.625.2261
fax: 612.625.5212

____________________
C. Michael Barton, Professor of Anthropology
School of Human Evolution and Social Change
PO Box 872402
Arizona State University
Tempe, AZ 85287-2402
USA

Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>

Kirk R. Wythers
Dept. of Forest Resources
University of Minnesota
email: kwythers@umn.edu
tel: 612.625.2261
fax: 612.625.5212