Re: assigning parameters from a matrix

*To*: mathgroup at smc.vnet.net*Subject*: [mg27099] Re: assigning parameters from a matrix*From*: Brian Higgins <bghiggins at ucdavis.edu>*Date*: Sun, 4 Feb 2001 02:58:25 -0500 (EST)*References*: <95glkt$8fg@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Here is one possibility (if I understand what you are trying to do correctly). Let suppose your {a,b,c} data from your ReadList function looks like this: mydata = Table[{Random[], Random[], Random[]}, {4}] {{0.964053, 0.729247, 0.867568}, {0.942935, 0.0860712, 0.588032}, {0.0714172, 0.65093, 0.890847}, {0.476312, 0.124108, 0.0936164}} Now we convert the data into a set of rules: myrules = Map[Thread[{a, b, c} -> #] &, mydata] Here is our function myfunc[x_] := c Sin[a x + b] Then we apply our rules to the function myfunc[x] /. myrules {0.867568 Sin[0.729247 + 0.964053 x], 0.588032 Sin[0.0860712 + 0.942935 x], 0.890847 Sin[0.65093 + 0.0714172 x], 0.0936164 Sin[0.124108 + 0.476312 x]} Cheers, Brian In article <95glkt$8fg at smc.vnet.net>, "F cartwright" <flc at ualberta.ca> wrote: > Hi. I was hoping someone could help me. > > I have a function with 3 parameters, and I want to use a matrix to look at > the shape of this function in response to specific combinations of the > parameters (e.g., a = 1, b = 2, c = 3). I have created a matrix with my > different sets of parameters and have used the ReadList command to enter > into Mathematica. What command(s) do I use to apply the function to the > matrix and look at the different outcomes? I am having repeated lack of > success with Map. > > Please hel Sent via Deja.com http://www.deja.com/