RE: proper way to manipulate lists?
- To: mathgroup at smc.vnet.net
- Subject: [mg40200] RE: [mg40182] proper way to manipulate lists?
- From: "SEPULVEDA,ARIEL (HP-PuertoRico,ex1)" <ariel.sepulveda at hp.com>
- Date: Tue, 25 Mar 2003 14:49:33 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
You can just multiply like this: data*{a,b}
-----Original Message-----
From: Nathan Moore [mailto:nmoore at physics.umn.edu]
To: mathgroup at smc.vnet.net
Subject: [mg40200] [mg40182] proper way to manipulate lists?
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