Re: assigning parameters from a matrix

*To*: mathgroup at smc.vnet.net*Subject*: [mg27142] Re: [mg27067] assigning parameters from a matrix*From*: Tomas Garza <tgarza01 at prodigy.net.mx>*Date*: Wed, 7 Feb 2001 02:12:47 -0500 (EST)*References*: <200102030959.EAA08538@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

I wonder if I got your problem all right. Let your matrix with the different sets of parameters be mat: In[1]:= mat = {{1, 2, 3}, {3, 2, 1}, {3, 1, 2}, {2, 1, 3}} Out[1]= {{1, 2, 3}, {3, 2, 1}, {3, 1, 2}, {2, 1, 3}} Define your function, say f, writing the 3 parameters in a list and the other variables as usual. For example, suppose In[2]:= f[{a_, b_, c_}, x_, y_, z_] := a x + b y + c z Then the following gives you all the combinations of parameter values into your function: In[3]:= f[#] & /@ mat Out[3]= {x + 2 y + 3 z, 3 x + 2 y + z, 3 x + y + 2 z, 2 x + y + 3 z} Tomas Garza Mexico City ----- Original Message ----- From: "F cartwright" <flc at ualberta.ca> To: mathgroup at smc.vnet.net Subject: [mg27142] [mg27067] assigning parameters from a matrix > 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 help! > >

**References**:**assigning parameters from a matrix***From:*"F cartwright" <flc@ualberta.ca>