[geos-devel] left and right buffer

[Martin Davis]

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: geos-devel-bounces at geos.refractions.net 
> [mailto:geos-devel-bounces at geos.refractions.net] 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: geos-devel-bounces at geos.refractions.net
> >>[mailto:geos-devel-bounces at geos.refractions.net] On Behalf Of 
> >>zhangjing
> >>Sent: May 17, 2006 12:10 AM
> >>To: geos-devel at 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
> >>
> >>	
> >>
> >>
> >>
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> >>
> > 
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> 
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