Re: proper way to manipulate lists?
- To: mathgroup at smc.vnet.net
- Subject: [mg40190] Re: proper way to manipulate lists?
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Tue, 25 Mar 2003 14:47:42 -0500 (EST)
- Organization: Universitaet Leipzig
- References: <b5p158$7sk$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
{a, b}*# & /@ data
may avoid the usage of Excel.
Regards
Jens
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