Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1999
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1999

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

Search the Archive

Re: problem with Part function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg18197] Re: problem with Part function
  • From: dreeves at flip.eecs.umich.edu (Daniel Reeves)
  • Date: Mon, 21 Jun 1999 22:50:38 -0400
  • References: <7kho9q$qop@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

This may be what you were thinking of with Apply:
mat[[##]]&@@xy
but you can't assign to it.

So you could use ReplacePart:
mat = ReplacePart[mat,1,xy];

--    --    --    --    --    --    --    --    --    --    --    -- 
Daniel Reeves               http://ai.eecs.umich.edu/people/dreeves/


On 19 Jun 1999, Casubolo Dario wrote:

> 
> Just a little problem:
> I've a matrix of zeros, say:
> mat=Table[Table[0,{5}],{5}];
> then, I've a point in xy axys,
> xy={3,3};
> now, I want the position {3,3} of matrix becomes 1;
> if I write
> mat[[xy]]=1; or mat[[{3,3}]]=1; it doesn't work; only mat[[3,3]]=1 
> works, but I don't want rewrite all.
> I think I've to use something like Map, Thread, Apply or so, but I don't 
> know what and how exactely;
> please, someone help me.
> THANK YOU
> 
> Dario Casubolo
> email: bubbola at workline.it
> 
> 
> 


  • Prev by Date: Re: Mathematica 2.2 on iMac?
  • Next by Date: Re: Mathematica 2.2 on iMac?
  • Previous by thread: Re: problem with Part function
  • Next by thread: Re: problem with Part function