Services & Resources / Wolfram Forums
MathGroup Archive
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2003

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

Search the Archive

Re: proper way to manipulate lists?

  • To: mathgroup at
  • Subject: [mg40223] Re: [mg40182] proper way to manipulate lists?
  • From: Andrzej Kozlowski <akoz at>
  • Date: Wed, 26 Mar 2003 02:43:47 -0500 (EST)
  • Sender: owner-wri-mathgroup at

One of the simplest ways is:

{a, b}# & /@ data

Yours seems on of the hardest ;-)

Andrzej Kozlowski
Yokohama, Japan

On Tuesday, March 25, 2003, at 05:04  pm, Nathan Moore wrote:

> I'm sure this is a one-liner, but it has stumped me for years.  Suppose
> I'm working with a 2-d array of data,
> 	data = {{x1,y1},{x2,y2}...{xN,yN}};
> and I want to transform the data according to,
> 	data2 = {{x1*a,y1*b},{x2*a,y2*b}...{xN*a,yN*b}};
> The only way I know to do this is to move the data to excel,
> performing the transform and then move the data back to Mathematica.  
> This
> is crazy - there must be a better way - is there?  Please tell me there
> is!
> regards,
> Nathan Moore, University of Minnesota Physics Department

  • Prev by Date: Re: proper way to manipulate lists?
  • Next by Date: Re: Ellipse Drawing
  • Previous by thread: Re: proper way to manipulate lists?
  • Next by thread: Cell grouping rules