Re: Newbie question

*To*: mathgroup at smc.vnet.net*Subject*: [mg25284] Re: Newbie question*From*: leko at ix.netcom.com (J. Leko)*Date*: Tue, 19 Sep 2000 03:45:09 -0400 (EDT)*References*: <8q3dvc$kbb@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Jose, Using rules you could do this: In[157]:= data = {{x, y}, {x1, y1}, {x2, y2}, {x3, y3}} Out[157]= {{x, y}, {x1, y1}, {x2, y2}, {x3, y3}} In[158]:= data1 = data /. {x_, y_} -> {x, 1/y} Out[158]= {{x, 1/y}, {x1, 1/y1}, {x2, 1/y2}, {x3, 1/y3}} This uses the ReplaceAll (/.) command (see section 2.4.1 in The Mathematica Book). Regards, J. Leko University of Alabama in Huntsville Please reply to leko*j at cspar.uah.edu In article <8q3dvc$kbb at smc.vnet.net>, Jose M Lasso <jml at accessinter.net> wrote: > Hi Mathgroup, > > I have some numerical data: data:={{x,y},{x1,y1},{x2,y2}....{xn,yn}}, > I want to transform the data like this: > data1:={{x,1/y},{x1,1/y1},{x2,1/y2}....{xn,1/yn}}, how can I do this > transformation? Thanx in advance. Regards > > Jose M Lasso