Re: Apply or Map on some parts of lists - help

*To*: mathgroup at smc.vnet.net*Subject*: [mg115625] Re: Apply or Map on some parts of lists - help*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Sun, 16 Jan 2011 05:56:41 -0500 (EST)

f[{x_, y_}] := {x, #/3.6 &[y]}; f[x_] := x; Map[f, data, {3}] Or using rules data /. {x_, y_?AtomQ} -> {x, #/3.6 &[y]} If you have numbers, you could use NumericQ rather than AtomQ Bob Hanlon ---- dragec <culinovic at gmail.com> wrote: ============= Dear, I have List like: { {{TITLE1},{{x11,y11},{x12,y12},{x13,y13},{x14,y14}}}, {{TITLE1},{{x21,y21},{x22,y22},{x23,y23},{x24,y24}}}, {{TITLE1},{{x31,y31},{x32,y32},{x33,y33},{x34,y34}}} } So, I would like to apply some function (eg. #/3.6&) to all y's. Is there any elegant way to do this. I Know that you know how to do this. :) THX