Re: [R] how to get column/row info from a dist object?

From: Francisco J. Zagmutt <gerifalte28_at_hotmail.com>
Date: Fri, 11 May 2007 15:42:27 -0600

But the dist object is not structured with rows and columns. i.e.

x=1:4

d=dist(x)

   1 2 3
2 1
3 2 1
4 3 2 1

str(d)
Class 'dist' atomic [1:6] 1 2 3 1 2 1

   ..- attr(*, "Size")= int 4
   ..- attr(*, "Diag")= logi FALSE
   ..- attr(*, "Upper")= logi FALSE
   ..- attr(*, "method")= chr "euclidean"
   ..- attr(*, "call")= language dist(x = x)

So, AFAIK if you want to get references for rows and columns you need to make it an object that indeed has rows and columns, i.e. a matrix. See ?which to obtain the reference you want in a matrix.

Regards,

Francisco

Pedro Mardones wrote:
> Dear R users;
>
> Is it possible to get the row and column number of a particular entry
> in a dist object?
>
> Let's say that I want to find the position of the value 1.1837 (the
> last entry on the dist object below), that is [6,3]. Can I get those
> values without transforming the object to a matrix?, i.e. working with
> the dist object only.
>
> 1 2 3
> 2 0.23935864
> 3 0.56655914 0.71923104
> 4 0.15272561 0.37926989 0.43931332
> 5 0.17728654 0.13355685 0.73025495
> 6 0.61783536 0.52055379 1.18374889
>
> Thanks for any idea
> PM
>
> ______________________________________________
> R-help_at_stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



R-help_at_stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Fri 11 May 2007 - 21:53:29 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Sat 12 May 2007 - 00:31:48 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.