RE: Creating a new table using values from a column in another table,

*To*: mathgroup at smc.vnet.net*Subject*: [mg66409] RE: [mg66346] Creating a new table using values from a column in another table,*From*: "David Park" <djmp at earthlink.net>*Date*: Thu, 11 May 2006 02:17:04 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Michael, data = Table[{x[i], y[i]}, {i, 5}] {{x[1], y[1]}, {x[2], y[2]}, {x[3], y[3]}, {x[4], y[4]}, {x[5], y[5]}} data /. {x_, y_} -> {x, f[x]} {{x[1], f[x[1]]}, {x[2], f[x[2]]}, {x[3], f[x[3]]}, {x[4], f[x[4]]}, {x[5], f[x[5]]}} {First[#], f[First[#]]} & /@ data {{x[1], f[x[1]]}, {x[2], f[x[2]]}, {x[3], f[x[3]]}, {x[4], f[x[4]]}, {x[5], f[x[5]]}} Give a good email address and you won't have to wait until the next day for an answer. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Wonko the Sane [mailto:noone at nowhere.com] To: mathgroup at smc.vnet.net Hi all, I have a question that I have not been able to work out myself, and so put it to the group to help. I have a set of data points in a table (2 columns {{x1,y1},{x2,y2},....,{xn,yn}}) I have performed a fit to the data and have a function f[x] which I would now like to evaluate at each data point (column 1 of the first table) to get a new table {{x1,f[x1]},{x2,f[x2]},....,{xn,f[xn]}}. Is there a way to do this? I hope my request is clear Best Regards Michael