[GRASS-user] Re: [GRASS-dev] Re: v.buffer creates artefact - bug?

[Dylan Beaudette]

Note that my test (results same as Maciek) was conducted on a GCC 4.1 system.

Cheers,

dylan

On Wednesday 31 January 2007 09:27, Maciej Sieczka wrote:
> Maris Nartiss wrote:
> > I downloaded provided location and can confirm bug. I get same buffer
> > as You. Running v.clean or v.build on vector does not change anything.
> > v.digit fixes problem, as You wrote.
>
> "OK". So there is something fishy here - 3 people confirmed till now.
>
> > One strange thing - v.info says, that there is one island. I can not
> > see any such feature in v.digit. Am I missing something?
>
> This is as expected. A separate area is an island at the same time,
> AFAIK. When there are two such areas, like on the attached screendump,
> there are two islands - and so forth:
>
> $ v.info -t checkit
> nodes=4
> points=0
> lines=0
> boundaries=2
> centroids=2
> areas=2
> islands=2
> faces=0
> kernels=0
> primitives=4
> map3d=0
>
> > GRASS 6.2.1 and 6.3-cvs (~ week old)
> > Gentoo GNU/Linux on i686 (Intel P4 Celeron M)
> > GCC 4.1.1
>
> I can reproduce this on a 32bit Pentium M Dothan (2.6.15-27-686) and on
> a 32bit AMD K7 Barton (2.6.15-27-k7), both Ubuntu 6.06, GCC 4.0.3.
>
> Hamish said it was not reproducible on his "Debian/Sarge, gcc 3.3.5,
> linux 2.4.27-3-686 on a P4".
>
> Maybe GCC version makes the difference? I'll try GCC 3 when possible.
>
> Hamish,
>
> Are you still not able to reproduce this problem on your setup?
>
> Maciek

-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341