Order Polygon coordinates

Hello
i have several points coordinates in an array. Those coordinates draw a
polygon but the coordinates are not in order.
i need, before draw the poligon, order the coordinates but i have tried to
do it but it does not work.
any help??
thanks
sorry for my english

 

Hi...

How you pass the coordinates??? or How you get it???

 

I got the coordinates from two, 3 or more polygons. sometimes i have to make
a fusions between severals polygons and get one polygon from those polygons.

 

Not a valid image !!
What kind of image is that ?

Oye compadre, sería mejor un jpeg !

 

So what youre really looking for is way to get only the resulting outer
boundary ?

 

Te escribo en español
principalmente trabajo con informacion de limites de predios o no se como le
llamen alla, los limites de cada casa. En determinado
momento se pueden fusionar dos o mas casas en una sola. Entonces cada
poligono significa los limites de cada casa, cuando se hace
la fusion de dos o mas limites de cada casa nececito reconstruir los
limites a partir de los predios fusionados.
ya obtengo en un arreglo todas las coordenadas que no se duplican dentro de
los poligonos pero como no estan en orden no puedo generar un nuevo
poligono.
es lo unico que me falta. gracias

 

So you have parcels that you want to fuse together and have a resulting
parcel.

A simple solution would be to:

1) convert your polylines to regions
2) add all the regions
3) explode the resulting region

You should get your border polyline.

 

Just to chime in on the chance that JLO has Autodesk Map - this is an
out-of-the-box function of Autodesk Map.

Scott

 

You need to establish/provide more information or rules. It is possible to validly join a number of points into a polygon in multiple ways.

For example, I just created the following 4 points on a piece of paper:

S (7,5)
T (3,3)
E (1,1)
P (2,5)

I was then able to create a valid polygon with P.E.T.S. but I was also able to create an equally valid polygon with P.E.S.T.!!

Regards

Wayne Ivory
IT Analyst Programmer
Wespine Industries Pty Ltd

 

I stumbled onto the same problem and solved it using the create
region-explode region method, but there is also public-domain ARX library
with many 2D/3D geometry functions. One of them is creating closed
_outermost_ boundary from given set of points. I didn't work well for me as
there is no valid VBA example, but there is a VisualLISP code that runs it.

Take a peek at:
"David Eberly's Magic Software geometric library"
http://xarch.tu-graz.ac.at/autocad/ads/eberly/

Regards,
Maksim Sestic

to validly join a number of points into a polygon in multiple ways.

able to create an equally valid polygon with P.E.S.T.!!