[GRASS-user] line thickness

[Dylan Beaudette]

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,

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