[GRASS-user] line thickness

[Dylan Beaudette]

On Tuesday 16 May 2006 15:39, Dylan Beaudette wrote:
> On Tuesday 16 May 2006 14:22, Huidae Cho wrote:
> > On Tue, May 16, 2006 at 10:17:51AM -0700, Dylan Beaudette wrote:
> > > On Tuesday 16 May 2006 05:20, Markus Neteler wrote:
> > > > */orkun <temiz at deprem.gov.tr>/* wrote:
> > > > >     hello
> > > > >
> > > > >     How can I make a vector line thicker on display (d.vect ???)
> > > > >
> > > > >     In the display manager (D.M) just see all that U can achieve,
> > > > >     includes thickenning vector lines too.
> > > >
> > > > d.vect comes with a width= parameter to handle line width.
> > > >        width   Line width
> > > >
> > > > Markus
> > >
> > > I wonder how hard it would be to implement line thickness based on an
> > > attribute .... ?
> >
> > I just added this feature to CVS, so could you please test if it's
> > working for you?  There are two new options: wcol= and wscale=. Let's say
> > you have a column "channel_width" and its values are in meters.
> >
> > d.vect map=streams width=2 wcol=channel_width wscale=0.05
> >
> > means that line widths are 0.05 * channel_width and if this value is
> > negative, the default width (2) will be used.  Please note that the line
> > width column should be either INTEGER or DOUBLE PRECISION type.
> >
> > Huidae Cho
>
> Huidae:
>
> Wow! that was fast.
>
> Looks like it works quite well. Thanks!
>
> here is the output:
> http://169.237.35.250/~dylan/temp/d.vect-wcol-test.png
>
> Cheers,

Yikes... after updating from CVS yesterday (after the line thickness patch) it 
looks like vector polygons are not being drawn via d.vect:

getting segmentation faults when type=area !!

Any thoughts on that?

Cheers,

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