[GRASSLIST:4424] Re: v.to.sites error

[Maciek Sieczka]

Radim,

one new thing about this error

v.to.sites fails near the nodes as described before if the vector lines are
prepared in v.digit but it doesn't when the vector lines are produced using
the r.contour on a dem raster

please see the attached vtosites_2.png for comaprison, where
VIOLET - vector lines
WHITE - sites produced with v.to.sites

the inner circle was digitized and labelled in v.digit, then v.to.sites
the outer circle was derived from a DEM with r.contour, then v.to.sites

could it be that v.digit is guilty?

(all refers to Grass5.3)

Maciek

----- Original Message -----
From: "Maciek Sieczka" <werchowyna at pf.pl>
To: <grasslist at baylor.edu>
Sent: Tuesday, September 28, 2004 12:08 AM
Subject: [GRASSLIST:4419] Re: v.to.sites error


> > > It seems that v.to.sites fails to translate some points near the
nodes.
> > > (...)
> > > Unclosed line's endings are not translated either.
> > >
> > > This error does not depend on dmax.
> > >
> > > DEVELOPERS! Should I give a bug report?
> > >
> > > Maciek
> > >
> > > P.S.
> > > I wonder if v.surf.rst uses a smililar way to translate the input
vector
> > > lines to points thus commit the same error?
>
> Radim wrote:
> > Similar maybe, but not the same. Are you sure, that those lines have a
> > category?
>
> yes I'm sure
> digitized and labelled in v.digit
>
> each closed line has one node
> the closed lines fail to convert to sites near that node
>
> open lines have two nodes - one on each ending
> open lines fail to convert to sites near the nodes on the line's endings
>
> I worked the error around doing v.to.rast and then r.to.sites
>
> Maciek
-------------- next part --------------
A non-text attachment was scrubbed...
Name: vtosites_2.png
Type: image/png
Size: 11028 bytes
Desc: not available
Url : http://lists.osgeo.org/pipermail/grass-user/attachments/20040928/d4b8127b/vtosites_2.png