MathGroup Archive 2005

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

Search the Archive

Re: Manipulating a matrix

  • To: mathgroup at smc.vnet.net
  • Subject: [mg59342] Re: Manipulating a matrix
  • From: Lee Newman <leenewm at umich.edu>
  • Date: Sat, 6 Aug 2005 01:29:35 -0400 (EDT)
  • References: <dcmuig$glg$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

This may not be most eloquent way to do it, but should work:

m = Table[1, {4}, {4}]
n = Length@m;
m[[Range[2, n], Range[2, n]]]

{{1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}}
{{1, 1, 1}, {1, 1, 1}, {1, 1, 1}}





Ramier wrote:
> Hello everyone,
> 
> I think that my question is rather simple and maybe I ought to go
> deeper into Mathematica book:
> I have a n x n matrix and I'd like to remove the first line and the
> first column in order to get the (n-1)x(n-1) matrix with the entries
> remaining. Is there a simple way to do that ?
> 
> Perhaps my question is really simple or idiot but I've never used
> Mathematica before.
> 
> Thanks a lot,
> 
> Wissam
> 

-- 
- Lee

____________________________________________________
L E E   N E W M A N               www.leenewman.org
     d o c t o r a l   s t u d e n t
          c o g n i t i v e   p s y c h o l o g y
               c o m p u t e r   s c i e n c e
                    u .  m i c h i g a n
                         a n n   a r b o r
____________________________________________________

           Skylarks singing-
           the farmer
           makes a pillow of his hoe.
			
                                         ISSA


  • Prev by Date: Re: Manipulating a matrix
  • Next by Date: Need portable code to open Notation palette.
  • Previous by thread: Re: Manipulating a matrix
  • Next by thread: Visualization Site Updates