[geos-devel] depth mismatch

[strk]

On Wed, Apr 21, 2004 at 08:30:00AM -0700, Martin Davis wrote:
> Strk,
> 
> Can you post the error code?   Then I can make sure this isn't an error
> in JTS as well.

Was a port error. I've fixed it reading from JTS.
BTW the buffer operation give results now, but they are
probably not correct:

Buffer for :
 POINT (150.00 350.00)

is:
 POLYGON ((150.00 350.00, 160.00 350.00, 159.81 348.05, 159.24 346.17, 158.31 344.44, 157.07 342.93, 155.56 341.69, 153.83 340.76, 151.95 340.19, 150.00 340.00, 148.05 340.19, 146.17 340.76, 144.44 341.69, 142.93 342.93, 141.69 344.44, 140.76 346.17, 140.19 348.05, 140.00 350.00, 140.19 351.95, 140.76 353.83, 141.69 355.56, 142.93 357.07, 144.44 358.31, 146.17 359.24, 148.05 359.81, 150.00 360.00, 151.95 359.81, 153.83 359.24, 155.56 358.31, 157.07 357.07, 158.31 355.56, 159.24 353.83, 159.81 351.95, 160.00 350.00, 150.00 350.00))

Which starts and ends at the original point, should it ?

--strk;

> 
> Martin Davis, Senior Technical Architect
> Vivid Solutions Inc.
> Suite #1A-2328 Government Street Victoria, B.C. V8T 5G5
> Phone: (250) 385 6040 - Local 308 Fax: (250) 385 6046
> 
> 
> > -----Original Message-----
> > From: strk [mailto:strk at keybit.net] 
> > Sent: April 21, 2004 7:19 AM
> > To: Martin Davis; GEOS Development List
> > Cc: Yury A. Bychkov; Paul Ramsey
> > Subject: Re: [geos-devel] depth mismatch
> > 
> > 
> > Fiuuuuu!. Found.
> > Was an error in DirectedEdgeStar::computeDepths.
> > It seems to work now.
> > 
> > --strk;
> > 
> > On Wed, Apr 21, 2004 at 04:10:32PM +0200, strk wrote:
> > > Hello Martin,
> > > I'm trying to figure out why doesn't the buffer operation 
> > work in GEOS 
> > > CVS. Turning some debugging on I receive
> > > 
> > > 	TopologyException: depth mismatch (150,350)
> > > 
> > > at every  bufferFixedPrecision() attempt but the one with 0 
> > precision 
> > > digits (the last one) which in turn drops an empty resultGeometry.
> > > 
> > > Can you tell me if sizeBasedScaleFactor matches max 
> > precision digits ? 
> > > And more on, what is a depth mismatch exception ?
> > > 
> > > TIA
> > > 
> > > --strk;
> > > 
> > > Here is the complete debugging output:
> > > 
> > > POINT (150.00 350.00)
> > > Trying with 12 max precision digits
> > > sizeBasedScaleFactor: 1e+10
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 11 max precision digits
> > > sizeBasedScaleFactor: 1e+09
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 10 max precision digits
> > > sizeBasedScaleFactor: 1e+08
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 9 max precision digits
> > > sizeBasedScaleFactor: 1e+07
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 8 max precision digits
> > > sizeBasedScaleFactor: 1e+06
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 7 max precision digits
> > > sizeBasedScaleFactor: 100000
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 6 max precision digits
> > > sizeBasedScaleFactor: 10000
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 5 max precision digits
> > > sizeBasedScaleFactor: 1000
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 4 max precision digits
> > > sizeBasedScaleFactor: 100
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 3 max precision digits
> > > sizeBasedScaleFactor: 10
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 2 max precision digits
> > > sizeBasedScaleFactor: 1
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 1 max precision digits
> > > sizeBasedScaleFactor: 0.1
> > > TopologyException: depth mismatch at  (150,350)
> > > Trying with 0 max precision digits
> > > sizeBasedScaleFactor: 0.01
> > > resultGeom != NULL _______________________________________________
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> > > http://geos.refractions.net/mailman/listinfo/geos-devel
> >