[GRASS5] Fw: d.area progress report...

[Eric G. Miller]

On Fri, 25 Jan 2002 14:08:43 +0100, Radim Blazek <radim.blazek at wo.cz> wrote:

> On Tuesday 22 January 2002 17:39, Eric G. Miller wrote:
> 
> > It might be useful.  I understand already the general scanline
> > conversion (which GRASS does via G_plot_polygon).  However,
> > G_plot_polygon can not handle eliminating nested areas/holes.
> > What I'm doing is breaking up the exterior with interiors
> > such that a set of simple exterior polygons (no holes) are
> > formed.
> 
> I use G_plot_polygon in d.vect / g51 and it works (checked also for island 
> attached to area by line going through that island). What is the problem with
> G_plot_polygon?

Hmm, how did you put the data together?  I tried appending island/hole data to
the exterior and got a mess.

-- 
Eric G. Miller <egm2 at jps.net>