Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2012

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Euclidean distance of all pairwise combinations (redundants)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg128668] Re: Euclidean distance of all pairwise combinations (redundants)
  • From: Jesse Pisel <jessepisel at gmail.com>
  • Date: Thu, 15 Nov 2012 03:58:35 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Delivered-to: l-mathgroup@wolfram.com
  • Delivered-to: mathgroup-newout@smc.vnet.net
  • Delivered-to: mathgroup-newsend@smc.vnet.net
  • References: <20121114062906.D261769B8@smc.vnet.net>

Thank you for all the suggestions everyone, all the different codes worked
well and they all did exactly what I wanted to do with my data set. Thank
you for all the help! I ended up just using Tuples instead of Subset just
for ease of use as Ralph suggested.

On Wed, Nov 14, 2012 at 5:23 AM, Sseziwa Mukasa <mukasa at gmail.com> wrote:

> Outer[EuclideanDistance[#,#]&,list,list]
>
> On Nov 14, 2012, at 1:29 AM, Jesse Pisel <jessepisel at gmail.com> wrote:
>
> > I have been having a tough time trying to figure out how to include all
> red undant pairwise combinations in my results for the euclidean distance
> between a set of points. I have a set of points with xy coordinates and
> want the euclidean distance between each point including the point and
> itself. So if my points in xy space are list = {{1, 1}, {2, 2}, {3, 3}} for
> example, I want the distance from {1, 1} to {1, 1}, {1, 1} to {2, 2}, and
> {2, 2} to {3, 3} etc. for each point for a total of 9 distances all
> together. The EuclideanDistance function removes the redundant distances
> that I want retained in the results. I have been using this code just to
> play with data but would like to be able to expand up to 500+ points:
> >
> > list = {{1, 1}, {2, 2}, {3, 3}}
> > EuclideanDistance @@@ Subsets[list, {2}]
> >
> > Any ideas on how to get the euclidean distance between all the points
> including redundants and self references?
> >
> >
>



-- 
*Jesse Pisel*
970-901-5455
P.O. Box 18471
Golden, CO 80401




  • Prev by Date: Re: Euclidean distance of all pairwise combinations (redundants)
  • Next by Date: Re: Implicit Times
  • Previous by thread: Re: Euclidean distance of all pairwise combinations (redundants)
  • Next by thread: Re: Euclidean distance of all pairwise combinations (redundants)