Yes, I know that negative buffer won't doesn't handle left/right - that suggestion was in answer to Stephen's question about "shrinking" buffers.
What I'm looking for is some examples of what left/right buffers look like (especially for pathological cases such as very narrow V shapes) Martin Davis, Senior Technical Architect Vivid Solutions Inc. www.vividsolutions.com Suite #1A-2328 Government Street Victoria, B.C. V8T 5G5 Phone: (250) 385 6040 - Local 308 Fax: (250) 385 6046 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > zhangjing > Sent: May 17, 2006 6:28 PM > To: GEOS Development List > Subject: Re: RE: [geos-devel] left and right buffer > > > Our client need a tool like ArcToolbox Buffer which has > functionality of Left/Right/Full buffer, and i believe > negative distances could not be applied to polyline geometry. > > Thanks. > > > > > >Am I missing something? Isn't this the functionality that negative > >buffer distances gives today? > > > >Martin Davis, Senior Technical Architect > >Vivid Solutions Inc. www.vividsolutions.com > >Suite #1A-2328 Government Street Victoria, B.C. V8T 5G5 > >Phone: (250) 385 6040 - Local 308 Fax: (250) 385 6046 > > > > > >> -----Original Message----- > >> From: [EMAIL PROTECTED] > >> [mailto:[EMAIL PROTECTED] On Behalf Of > >> Stephen Woodbridge > >> Sent: May 17, 2006 10:06 AM > >> To: GEOS Development List > >> Subject: Re: [geos-devel] left and right buffer > >> > >> > >> Hi Martin, > >> > >> I think a useful variant of this for polygons it to be able > >> to specify > >> inside or outside, so you could effectively grow and shrink > >> the polygon. > >> > >> The "grow" option is great for finding abutters, and I think > >> the buffer > >> command today already does this. > >> > >> The "shrink" option is great for defining/showing boundary offsets > >> within a lot that might be needed to insure zoning rules. > >> > >> -Steve > >> > >> Martin Davis wrote: > >> > I'm curious what your use case is for this > functionality. Can you > >> > post some sample data that you want L/R buffers for, and > perhaps an > >> > image of what you expect the results to look like? > >> > > >> > Martin Davis, Senior Technical Architect > >> > Vivid Solutions Inc. www.vividsolutions.com > >> > Suite #1A-2328 Government Street Victoria, B.C. V8T 5G5 > >> > Phone: (250) 385 6040 - Local 308 Fax: (250) 385 6046 > >> > > >> > > >> > > >> >>-----Original Message----- > >> >>From: [EMAIL PROTECTED] > >> >>[mailto:[EMAIL PROTECTED] On Behalf Of > >> >>zhangjing > >> >>Sent: May 17, 2006 12:10 AM > >> >>To: geos-devel@geos.refractions.net > >> >>Subject: [geos-devel] left and right buffer > >> >> > >> >> > >> >>hi, > >> >> > >> >>Is there any way in GEOS to calculate geometry's left or right > >> >>buffer ? > >> >> > >> >>TIA > >> >>Jing Zhang > >> >> > >> >> > >> >> > >> >> > >> >> > >> >>_______________________________________________ > >> >>geos-devel mailing list > >> >>geos-devel@geos.refractions.net > >> >>http://geos.refractions.net/mailman/listinfo/g> eos-devel > >> >> > >> > > >> > _______________________________________________ > >> > geos-devel mailing list > >> > geos-devel@geos.refractions.net > >> > http://geos.refractions.net/mailman/listinfo/geos-devel > >> > > >> > >> _______________________________________________ > >> geos-devel mailing list > >> geos-devel@geos.refractions.net > >> http://geos.refractions.net/mailman/listinfo/geos-devel > >> > >_______________________________________________ > >geos-devel mailing list > >geos-devel@geos.refractions.net > >http://geos.refractions.net/mailman/listinfo/geos-devel > > > > > _______________________________________________ > geos-devel mailing list > geos-devel@geos.refractions.net > http://geos.refractions.net/mailman/listinfo/g> eos-devel > _______________________________________________ geos-devel mailing list geos-devel@geos.refractions.net http://geos.refractions.net/mailman/listinfo/geos-devel
