Re: Array from for-loop iterations
- To: mathgroup at smc.vnet.net
- Subject: [mg116865] Re: Array from for-loop iterations
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Thu, 3 Mar 2011 05:55:15 -0500 (EST)
vec = Array[a, {8, 3}];
f0 = 0.5;
sol1 = (#[[3]] - f0)^2 + (#[[1]] - f0) (#[[2]] - #[[1]]) -
(#[[2]] - f0) (#[[3]] - f0) & /@ vec
sol1 == Table[(vec[[k, 3]] - f0)^2 + (vec[[k, 1]] - f0) (vec[[k, 2]] -
vec[[k, 1]]) - (vec[[k, 2]] - f0) (vec[[k, 3]] - f0), {k,
Length[vec]}]
True
Bob Hanlon
---- Lengyel Tamas <lt648 at hszk.bme.hu> wrote:
==========================
Dear Mathworld Community,
I am tackling a simple problem,
I have written a simple for-loop using elements from an array of
3-dimensional vectors:
f0=0.5;
For[k = 1, k < 9, k++,
(vec[[k, 3]] - f0)^2 + (vec[[k, 1]] - f0) (vec[[k, 2]] - vec[[k, 1]]) -
vec[[k, 2]] - f0) (vec[[k, 3]] - f0)
]
I don't know how to make an array out of the computed results.
Please help my silly soul.
Thank you.
Tam=C3=A1s