Kevin and Martin,
Thanks for your suggestion! I will try the plug-in. It looks amazing.
Eric
On Jan 19, 2008 12:35 AM, Kevin Neufeld <[EMAIL PROTECTED]> wrote:
> Eric,
>
> Are you perhaps after generating voronoi skeletons with your areas?
>
> If so, you may be interested in the free Skeletoniz
Amazing this skeletonizer. I will definetly give it a try, and will give a
try with JUMP.
On 1/18/08, Martin Davis <[EMAIL PROTECTED]> wrote:
>
> Have a look at this:
>
> http://www.jump-project.org/project.php?PID=SK&SID=OVER
>
> Eric Yu wrote:
> > Hi,
> >
> > Suppose I have a long shaped polygo
Have a look at this:
http://www.jump-project.org/project.php?PID=SK&SID=OVER
Eric Yu wrote:
Hi,
Suppose I have a long shaped polygon, like river area or the road,
is it possible to get the centerline of the area using PostGIS?
Or with other GIS library/software? I searched and tried but failed
Eric,
Are you perhaps after generating voronoi skeletons with your areas?
If so, you may be interested in the free Skeletonizer Utility (SK)
plugin for JUMP that we developed here at Refractions a while back.
http://www.jump-project.org/project.php?PID=SK&SID=OVER
This utility will generate v
If you could break your rope into a series of smaller polygons such
that each new polygon has two opposite edges that are from the
original polygon, you could take the centroids of all these points and
create a linestring. If you could make these polygons infinitely
small, you'd have the "true" cen
Thanks for your comments. The questions you asked are exactly what I faced
while I was searching for answers. It is easy to draw a centerline by human,
but I don't even know where to start. My initial idea was like this:
(Imagine we have a polygon, shaped like a rope, lying on the plane)
1. First
Eric Yu wrote:
Hi,
Suppose I have a long shaped polygon, like river area or the road,
is it possible to get the centerline of the area using PostGIS?
Or with other GIS library/software? I searched and tried but failed to
get any solution.
I think the problem to start with is how are you going
Hi,
Suppose I have a long shaped polygon, like river area or the road,
is it possible to get the centerline of the area using PostGIS?
Or with other GIS library/software? I searched and tried but failed to
get any solution.
Thank!
Eric
___
postgis-user
