MapInfo Pro

Looking for a simple way to generate polylines between Voronoi Polygon neighbours (Delaunay Triangles) essentially to look at inter-point distance statistics. Is there a simple or obvious way to do this having generated the Voronoi polygons? I don't want to generate polylines between all other points just the natural neighbours (i.e black lines in the example attachment).

Thanks,


------------------------------
Dave Townend
Wireless Research
BT Group plc
London
------------------------------

Below link may help you for this.
http://support.pitneybowes.com/VFP05_KnowledgeWithSidebarHowTo?id=kA180000000CuHmCAK&popup=false&lang=en_US

------------------------------
yogesh pawar
Pitney Bowes Software
Pune
------------------------------

Original Message:
Sent: 07-01-2019 08:14
From: Dave Townend
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines


Looking for a simple way to generate polylines between Voronoi Polygon neighbours (Delaunay Triangles) essentially to look at inter-point distance statistics. Is there a simple or obvious way to do this having generated the Voronoi polygons? I don't want to generate polylines between all other points just the natural neighbours (i.e black lines in the example attachment).

Thanks,


------------------------------
Dave Townend
Wireless Research
BT Group plc
London
------------------------------

I'm not aware of a way of generating these objects using built-in functions.

They could be created using MapBasic scripting, although the formula/logic required maybe complex. If someone has a methodology for doing this post it here (or in the MapInfo Pro Developer Group) & it would be a good discussion topic for Community members to help develop high level approach to implement in a script.

Thanks, Ashley

------------------------------
Ashley Crane
Regional Director, Software Support
Pitney Bowes
------------------------------

Original Message:
Sent: 07-02-2019 02:18
From: yogesh pawar
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines

Below link may help you for this.
http://support.pitneybowes.com/VFP05_KnowledgeWithSidebarHowTo?id=kA180000000CuHmCAK&popup=false&lang=en_US

------------------------------
yogesh pawar
Pitney Bowes Software
Pune

Original Message:
Sent: 07-01-2019 08:14
From: Dave Townend
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines


Looking for a simple way to generate polylines between Voronoi Polygon neighbours (Delaunay Triangles) essentially to look at inter-point distance statistics. Is there a simple or obvious way to do this having generated the Voronoi polygons? I don't want to generate polylines between all other points just the natural neighbours (i.e black lines in the example attachment).

Thanks,


------------------------------
Dave Townend
Wireless Research
BT Group plc
London
------------------------------

Hi Dave,

I was able to create Delaunay Triangles with a tool called 'Alphashapes' which is on github.  The tool hasn't been updated since v10.5 but it works for me with v17.

The github homepage for the tool is here:  mi-alphashapes

There is some discussion of the tool here: nyalldawson.net



------------------------------
Richard Cantwell
Gamma Ltd (VAR)
DUBLIN 8
------------------------------

Original Message:
Sent: 07-09-2019 20:34
From: Ashley Crane
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines

I'm not aware of a way of generating these objects using built-in functions.

They could be created using MapBasic scripting, although the formula/logic required maybe complex. If someone has a methodology for doing this post it here (or in the MapInfo Pro Developer Group) & it would be a good discussion topic for Community members to help develop high level approach to implement in a script.

Thanks, Ashley

------------------------------
Ashley Crane
Regional Director, Software Support
Pitney Bowes

Original Message:
Sent: 07-02-2019 02:18
From: yogesh pawar
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines

Below link may help you for this.
http://support.pitneybowes.com/VFP05_KnowledgeWithSidebarHowTo?id=kA180000000CuHmCAK&popup=false&lang=en_US

------------------------------
yogesh pawar
Pitney Bowes Software
Pune

Original Message:
Sent: 07-01-2019 08:14
From: Dave Townend
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines


Looking for a simple way to generate polylines between Voronoi Polygon neighbours (Delaunay Triangles) essentially to look at inter-point distance statistics. Is there a simple or obvious way to do this having generated the Voronoi polygons? I don't want to generate polylines between all other points just the natural neighbours (i.e black lines in the example attachment).

Thanks,


------------------------------
Dave Townend
Wireless Research
BT Group plc
London
------------------------------

Brilliant thanks Richard! This works perfectly, great find.

------------------------------
Dave Townend
Wireless Research
BT Group plc
London
------------------------------

Original Message:
Sent: 07-10-2019 06:44
From: Richard Cantwell
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines

Hi Dave,

I was able to create Delaunay Triangles with a tool called 'Alphashapes' which is on github.  The tool hasn't been updated since v10.5 but it works for me with v17.

The github homepage for the tool is here:  mi-alphashapes

There is some discussion of the tool here: nyalldawson.net

Here's an example of the output, with Voronoi in Blue, Delaunay in Red and the source points in Green

------------------------------
Richard Cantwell
Gamma Ltd (VAR)
DUBLIN 8

Original Message:
Sent: 07-09-2019 20:34
From: Ashley Crane
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines

I'm not aware of a way of generating these objects using built-in functions.

They could be created using MapBasic scripting, although the formula/logic required maybe complex. If someone has a methodology for doing this post it here (or in the MapInfo Pro Developer Group) & it would be a good discussion topic for Community members to help develop high level approach to implement in a script.

Thanks, Ashley

------------------------------
Ashley Crane
Regional Director, Software Support
Pitney Bowes

Original Message:
Sent: 07-02-2019 02:18
From: yogesh pawar
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines

Below link may help you for this.
http://support.pitneybowes.com/VFP05_KnowledgeWithSidebarHowTo?id=kA180000000CuHmCAK&popup=false&lang=en_US

------------------------------
yogesh pawar
Pitney Bowes Software
Pune

Original Message:
Sent: 07-01-2019 08:14
From: Dave Townend
Subject: Generating Delaunay Triangles or Voronoi Neighbour Lines


Looking for a simple way to generate polylines between Voronoi Polygon neighbours (Delaunay Triangles) essentially to look at inter-point distance statistics. Is there a simple or obvious way to do this having generated the Voronoi polygons? I don't want to generate polylines between all other points just the natural neighbours (i.e black lines in the example attachment).

Thanks,


------------------------------
Dave Townend
Wireless Research
BT Group plc
London
------------------------------