Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


Math Forum
»
Discussions
»
sci.math.*
»
sci.math.symbolic
Notice: We are no longer accepting new posts, but the forums will continue to be readable.
Topic:
Binary or Logical Selection : Given an array A and a binary orlogical vector S, how do I select the rows of A when S = 1 or True ?
Replies:
2
Last Post:
Sep 24, 2012 12:46 PM




Re: Binary or Logical Selection : Given an array A and a binary orlogical vector S, how do I select the rows of A when S = 1 or True ?
Posted:
Sep 24, 2012 12:46 PM


On Monday, 24 September 2012 07:31:36 UTC+1, James Waldby wrote:
> > Perhaps write something like following, in which the form p_i_j > > stands for p_{i_j} and the parenthesized lists stand for vectors > > of points p_i. > > > > Suppose A = (p_1, p_2, ... p_n). Let R = (p_i_1, p_i_2, ... p_i_k) > > where i_j < i_{j+1} for all the j, and i \in { i_j } iff S_i = 1. > > > >  > > jiw
Thanks indeed James  my initial reply seems to be lost ... Yes, I think I understand that, I have generated a Latex version, and have now incorporated it into my paper. Much thanks again, Beau



