RE: Applying my function to elements of a vector

*To*: mathgroup at smc.vnet.net*Subject*: [mg49492] RE: [mg49464] Applying my function to elements of a vector*From*: "David Park" <djmp at earthlink.net>*Date*: Thu, 22 Jul 2004 02:44:59 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Gregory, The easiest method to do this on the fly is to Map f onto the list. f /@ {a, b, c, d} {f[a], f[b], f[c], f[d]} Or you could make f Listable just as most Mathematica functions are. Attributes[f] = {Listable}; f[{a, b, c, d}] {f[a], f[b], f[c], f[d]} David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Gregory Lypny [mailto:gregory.lypny at videotron.ca] To: mathgroup at smc.vnet.net Hello everyone, Say I've created a function, f[x_], which accepts a single scalar as its argument. I now want to apply that function to each element of a vector, v, of length n, as in newVector = f[v], but I get an error because my function f does not thread over the elements of the vector as do built-in Mathematica functions such as Log[]. How can I get my function to apply to each element of my vector? Regards, Greg