Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2003
*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 2003

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

Search the Archive

proper way to manipulate lists?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg40182] proper way to manipulate lists?
  • From: Nathan Moore <nmoore at physics.umn.edu>
  • Date: Tue, 25 Mar 2003 03:04:24 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

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: Plot a recurrence relation
  • Next by Date: Re: Plot a recurrence relation
  • Previous by thread: Re: slope fields
  • Next by thread: Re: proper way to manipulate lists?